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October 2001Volume 3, No. 10

A monthly publication for GM Dealership Service Professionals

Service Operations

Contents

XM Satellite Radio is Coming . . . . . . . . . . . . . .1Techline News

Techline Website Now Open . . . . . . . . . . . .1Using the 90° Adapter . . . . . . . . . . . . . . .3Tech 2 10 MB Card out of Space . . . . . . . .3

Tech TipsWater Deflector Leak . . . . . . . . . . . . . . . .3Module Name Clarification . . . . . . . . . . . . .4Leather Seat Dye Transfer . . . . . . . . . . . . .4Tracker Wheel Speed Sensor Wiring . . . . . .4Pop Noise from Left Footwell Area . . . . . . .4Biasing the Bass on Premium Radio . . . . . .5Water Leak Correction . . . . . . . . . . . . . . .7Memory Seat Module Shuts Down . . . . . . . .7

How the Voice Mail Express System is Working .5How to Service New Fuel Injection System . . . . .6TAC Tips

12-Disc CD Player . . . . . . . . . . . . . . . . . .6Sunroof Windnoise . . . . . . . . . . . . . . . . . .6

Your Service Information “Inside Line” . . . . . . . .7CD Player Will Not Accept a CD . . . . . . . . . . . .8Bulletins . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Techline News

service clients connected to their GMACCESS server or GM Fleetcustomers running GM ServiceOperations software in a 'standalone' (non-GM ACCESS)environment.

The site also enables dealers tosend Labor Time Guide correctionrequests, Service Informationcorrections or concerns to theTechline Customer Support Center(TCSC) using online forms.Technicians may also send e-maildirectly to TCSC for support usinga form in the site or their own e-mail account.

The purpose of the Techlineweb site is to facilitate dealers

communicating with the Techline CustomerSupport Center over the World Wide Web.Service technicians requiring assistancemay still call the Techline CustomerSupport Center, but the Techline web siteshould reduce the need to call for basicinformation such as installation procedures,current version listings, or commonapplication concerns.

A revolutionary new kind of radio is anavailable option on the 2002 Cadillac Sevilleand DeVille. It’s called the XM Satellite Radio,named for the fact that it receives up to 100different stations broadcast from a pair ofsatellites.

The service is offered for a monthlysubscription fee by XM Satellite Radio, Inc.,from broadcast studios located inWashington, DC. The signals are uplinkedfrom the XM studio to two powerfulsatellites, one over each coast of the USA.These satellites (named “Rock” and “Roll”)remain stationary in orbits located 22,000miles above the earth. The two satellitesbroadcast identical signals, 24 hours a day. Inselected geographic areas with tall buildings,mountains, and other obstructions, land-based repeater antennas providesupplemental signals. This means an XM-equipped car can receive the samecontinuous programming, regardless ofwhere it is driven, coast to coast.

The clear digital signal is free from static

and distortion, and it eliminates thefrustration of driving out of range during afavorite song or an important newsbroadcast.

TIP: As with FM radio, the digital XMsignal may infrequently be obstructed,despite the repeater antennas. In this case,NO SIGNAL appears on the radio display.

XM Satellite Radio ComponentsIn addition to the radio head in the

instrument panel, three additionalcomponents are used to receive the satellitesignal: a roof-mounted digital radio antenna, adigital radio receiver in the luggagecompartment, and a coaxial cable.

XM Satellite Radio FeaturesThe digital radio looks and functions like a

conventional radio. In fact, it continues tooffer the familiar AM and FM bands, inaddition to the new XM band.

XM Satellite Radio is Coming

continued on page 2

Antenna on Roof

Techline Website Now Open

continued on page 2

The GM Service Operations Techlineweb site, Techline.gm.com, is nowavailable to aid in troubleshooting GMService Operations software products. Thisincludes TIS 2000, SI 2000, Tech 2 vehicleprogramming and diagnostics as well asLabor Time Guide application relatedconcerns.

Techline.gm.com's target audiences areGM dealers in the United States running

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In XM mode, the digital radio is capable ofdisplaying four types of information when theMSG button is pressed:

– Artist Name/Feature

– Song/Program Title

– Channel Category

– Other information, which varies bychannel

If the information requires multiple pages,they will display automatically at the rate ofone page every three seconds.

SERVICE TIPSTIP: You will find XM Satellite Radio

diagnostic and repair information in SI 2000by selecting Body and Accessories, thenEntertainment. Here you can view serviceinformation for the digital radio (RPO U2K),digital radio receiver, digital radio antenna,and coaxial cable.

The digital antennais separate from thewindshield and rearwindow mounteddiversity antennasused for AM-FMreception. The digitalantenna is located onthe roof above therear window. It is

positioned by a locating pin and is retained bya single large nut. It can be accessed bylowering the rear of the headliner The nutmust be torqued to only 3.5 Nm. (31 in. lb.).

Do not overtighten or damage may occur.

TIP: The plastic retainer on the antennathreaded shaft was designed for assemblyplant operations. If it is damaged, theantenna will function as intended and may bereused.

TIP: The antenna is molded of blackplastic. Do not attempt to apply paint or clearcoat to the antenna; doing so will cause lossof reception.

Deactivation/ActivationIf the digital radio receiver requires

replacement, the faulty receiver must bedeactivated and the new receiver activated.This can be done with one phone call to XMRadio at 1.800.852.XMXM (1.800.852.9696).

After installing the new receiver, you willbe instructed to park the vehicle outside withan unobstructed view of the southern sky.This must be done within 24 hours of thedeactivation/activation phone call. Beforeactivation, satellite reception can beconfirmed by tuning to preview channel 1.Leave the vehicle outside with the ignitionswitch in the accessory position and theradio on for 30 minutes. After activation, theremaining XM Radio channels will bereceived.

You can learn more about XM SatelliteRadio on the www.xmradio.com website.

– Thanks to Russ Gilbert

Techline News continued from page 1

Techline.gm.com is available to all U.S.GM dealers beginning on October 1st,2001.

To access the site, point your browserto http://techline.gm.com. Or, you may visitthe site using the hyperlink on thehttp://service.gm.com home page under'Techline Information'. The site is securedusing the same user IDs and passwordsthat you already use for SI 2000 on theWorld Wide Web.

TIP: For an optimal Techline.gm.comexperience, Internet Explorer 5.0 isrecommended.

Digital Radio

Digital Radio Antenna

Digital Receiver in Luggage Compartment

XM Satellite Radio continued from page 1

Thanks to Mathew Desmond andSteven Sturza

GM TechLink is a monthly magazine forall GM retail technicians and serviceconsultants providing timely informationto help increase knowledge about GMproducts and improve the performanceof the service department. Thismagazine is a companion to the GMEdge publication.

Publisher & Editor:Mark Stesney

GM Service OperationsMark.Stesney@GM.com

Technical Editor:Jim Horner

Jim.Horner@SandyCorp.com1-248-816-3641

Production Manager:Marie Meredith

Desktop Publishing:Greg Szpaichler, MediaWurks

spake@mediawurks.com

FAX number: 1-248-649-5465

Write to: TechLinkPO Box 500Troy, MI 48007-0500

GM TechLink on the Web: http://service.gm.com

General Motors service tips are intendedfor use by professional technicians, not a"do-it-yourselfer." They are written toinform those technicians of conditionsthat may occur on some vehicles, or toprovide information that could assist inthe proper service of a vehicle. Properlytrained technicians have the equipment,tools, safety instructions and know-howto do a job properly and safely. If acondition is described, do not assumethat the bulletin applies to your vehicleor that your vehicle will have thatcondition. See a General Motors dealerservicing your brand of General Motorsvehicle for information on whether yourvehicle may benefit from the information.Inclusion in this publication is notnecessarily an endorsement of theindividual or the company.

Copyright© 2001 General Motors Corporation

All rights reserved.

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10MB card out of space! When the Tech 2 was introduced in 1996,

it was equipped with a 10MB (megabyte)card, which had 10 times the capacity of theoriginal Tech 1’s mass storage cartridge.Vehicle on-board computer capabilitiesmultiply with each new model year, and theTech 2 has had to keep pace. Now, thecapacity of the 10MB card has reached itslimits, and it’s time to expand again.

The memory card contains diagnostic and

reprogramming applications, and space forvehicle calibrations. As the functions of theTech 2 expand, more space is needed fornew diagnostic applications. Forconvenience, coverage of the 1991 to 2002vehicles is being retained, and capacity isbeing added to accommodate upcomingmodel years. For one example, calibrationfiles are continually growing in size and willsoon be 1MB.

A new memory card will be neededbefore the end of 2001. Because of lead timeand possible back order issues, Tech 2owners should place orders for additional

cards as soon as possible. All U.S. andCanadian dealers were shipped one 32MBcard (J-45080) as essential equipment. AllTech 2 orders are being shipped with thenew 32MB card installed. To summarize,future Tech 2 releases will be too large forthe 10MB card. Future Tech 2 updates in TIS2000 will be specific to the 32MB card only.

In the meantime, orders for replacementcards for additional units as well as generalquestions can be directed to Kent-MooreTools at 1.800.345.2233.

– Thanks to Mark Stesney

Owners of some 1999-2001 Alero, GrandAm and Malibu models may comment abouta mildew odor or wet carpet. This may becaused by voids, buckles or other areas

where the door water deflector is notproperly adhered to the door.

Remove and discard the door waterdeflector. When removing the door waterdeflector for any reason, do not reuse it.

IMPORTANT: On the Grand Am and Alero4-door models, install a secondary waterdeflector as shown in the photos beforeinstalling the main water deflector. Atpresent, this secondary water deflector is

available only for the front doors of 4-doormodels. Contact Technical Assistance toobtain parts.

Install a new water deflector, using thesetips.

– Clean the door metal surface with alcoholbased cleaner.

– Stretch the new deflector and pressadhesive to the door. At the bottom, routethe adhesive just under the two squaredrain holes. To align properly, use theholes at the top corners on each side ofthe deflector and align to the holes in thedoor metal.

– With the deflector in place, use a rollertool to roll the adhesive. Start from thecenter bottom and follow the adhesive tothe top of the door. Repeat in theopposite direction. Then re-roll both areasagain.

– Finally, roll the bottom of the dooradhesive again and verify that all of theadhesive surface is stuck to the doormetal with no voids or buckles.

TIP: Do not over-roll the adhesive. As arule of thumb, the adhesive should be rolledout to about two times its original width.

– Thanks to Ray Romeo

Using the 90° Adapter

Tech 2 Update

Water Deflector Leak

Here’s a reminder about a pair of littleessential tools you received in March 1999.They are the J-42598-20 90° Adapter set.

The ALDL 16-pin connector on most carsis located next to the steering column, belowthe instrument panel. When the Tech 2,Vehicle Data Recorder (VDR), or other deviceis plugged into the ALDL, the cable mayhang straight down and interfere with thedriver’s legs or feet.

The J-42598-20 Adapter set was releasedto minimize this condition. When the adapteris plugged into the ALDL, it allows the cable

to be plugged in, in a horizontal position. Thisis particularly useful if you have to send thecustomer’s vehicle out with the VDRconnected to record intermittent conditions.

TIP: There are two adapters in the set.Use whichever one fits the orientation of theALDL connector in the vehicle you’reworking on.

TIP: Store the adapter set in the storagecase for either your Tech 2 or your vehicledata recorder.

– Thanks to Mark Stesney

Oldsmobile Alero Secondary Water Deflector

Pontiac Grand Am Secondary Water Deflector

Typical Water Deflector

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Module NameClarification

All Carlines and Years

Some leather seat covers have beenreturned in which the heated seat grid showsthrough. It appears that the leather seatcover has been burned by the heater grid.However, this is not the case.

This condition is actually caused by dyetransfer from the passengers’ clothing, whichdiscolors the leather and is more noticeableon lighter colored leather. Dye transfer is anindustry-wide concern and will occur on anyleather product. Blue jean material isnotorious for leaving blue dye on leather.

Seat heater usage tends to bake the dyeinto the seat cover in a visible pattern of theseat heater element. Once the seat heaterpattern has been baked in, it may not bepossible to remove.

Cleaning the leather on a regular basiswith mild soap and water as recommendedin the owner’s manual is the only prevention.Just like the paint on the exterior of thevehicle, regular maintenance will increase thelife of the product.

– Thanks to John Woodrich

Some 2001 Chevrolet Trackers mayexhibit an ABS DTC C1232, Left Front WheelSpeed Circuit Open Or Shorted. The wiringharness leading from EBCM cavities A9 &A10 to the left wheel speed sensor may bewrapped around the AC suction hose,causing tension within the wire harnessconnector, which is white. A loss incommunication from the left front wheelsensor to the EBCM may occur, setting theDTC C1232.

Locate the white ABS wiring harnessconnector at the driver’s side inner frontfender near the base of the engine coolantrecovery bottle. The harness should not berouted around the AC suction hose. It shouldbe routed parallel to the inner fender alongits lower edge, free from contact with the ACsuction hose.

– Thanks to Donald B. Sherman

Owners of some 1997 to current BuickCentury and Regal models may commentabout clunking or popping from the leftfootwell area when braking or accelerating.The clunking can be heard, and if theleft foot is on the floor, it can be felt aswell.

This condition affects only the left(driver) side of the car.

The engine frame is attached bybolts of two different lengths. Thefront ones are 118 mm long and therears are 97 mm. The designclearance between the rear (shorter)bolt and the floorpan is 14.8 mm. If afront bolt is installed in the rearlocation, the end of the bolt cancontact the floorpan. It may also bedifficult to obtain the proper torque onthe rear bolt.

To correct the condition, be sure

the short bolts are located in the rearpositions. And be sure to torque the bolts tospecification.

– Thanks to Wayne Zigler

Leather Seat Dye Transfer

Tracker WheelSpeed SensorWiring

Dye Transfer Appears as Grid

The June 2001 issue of TechLink on page6 has an article on the modules that requireprogramming on 2002 Chevrolet Trailblazer,GMC Envoy and Oldsmobile Bravada.

Two of the modules listed are the DriverDoor Module and Passenger Door Module.While these components do contain modulesthat require programming after replacement,they are also the door window and lockswitches. The parts catalog calls them FrontDoor Lock and Side Window Switches andso does the replacement procedure in theservice manual and the Labor Time Guide.

So, when you replace a Front Driver orPassenger Door Lock and Side WindowSwitch on these trucks, remember thatprogramming is required.

– Thanks to Jerry Garfield

Pop Noise from LeftFootwell Area

14.8mm

ProperClearance

5

Owners of 2001-2002 models of thesevehicles may comment that the premiumradio system (with amplifier UQ3 option)produces too much bass in the auto tonemodes, but is OK in the manual mode.

You can use your Tech 2 to bias (adjust)the amount of bass. The new bias settingreduces the bass to an acceptable level.

The Tech 2 permits you to togglebetween the new setting (reduced bass) andthe original factory setting. Here’s how.

TIP: Vehicles built after October 2001 willbe calibrated at the factory and will notrequire this procedure.

TIP: Your Tech 2 must contain the CD 9programming.

– Connect your Tech 2 and selectDiagnostics

– ‘Build’ the vehicle

– Select Radio

– Select Special Functions

– Select Bass Frequency Response

The Tech 2 will display:

– Select Continue.

The Tech 2 will display:

If you select Factory Setting: It willcalibrate the bass frequency response settingback to factory defaults.

If you select New Cal: It will calibrate thebass frequency response setting to give lessresponse when using the bass knob.

– Thanks to Zaher Fayyad and Mike Zambo

Setting Options

Bass Frequency Response

Select an option with the arrow keys.Use the [Enter] to activate (*) and deactivate the highlighted option. Whendone, use the softkey to save options.[Exit] leaves options unchanged.

Only one of the following options can beset at a time for this menu selection.

*Notice*Ignition Should Be ON

* Factory SettingNew Cal.

SaveOptions

Biasing the Bass on Impala andMonte Carlo with Premium Sound

The Brand Quality Group of GM ServiceOperations is responsible for ongoingproduct improvement. There is a BrandQuality Manager (BQM) assigned to eachtruck and car brand, as well as to each familyof engines and transmissions.

Two voice mail related systems havebeen set up to permit Brand Quality to shareservice information with retail dealerships.

First, there is the Voice Mail Express(VME) system, which provides the 4500subscribing dealers with a two-waycommunication. Comments from dealers aregathered by Brand Quality, and ongoingpreliminary service information is broadcastto these dealers. Dealers who submitproduct reports receive direct progressreports as well.

Second, all dealers (not just VMEsubscribers) are invited to phone in ProductReports on quality issues and repetitiveconditions. See the March 2000 issue ofTechLink for details.

TIP: You can find back issues of TechLinkon the web at http://service.gm.com.

The toll free number for phoning inproduct reports is 888.274.4185, and thereare separate mailboxes for:

– truck, mailbox 32000

– car, mailbox 32001

– powertrain, mailbox 32002

TIP: VME subscribers should use node81033 and the appropriate mailbox listedabove.

Some VME Success StoriesProduct reports are taken seriously, and a

great deal of effort goes into tracking downand correcting the causes of problems andconditions. Here are just a few examples.

Cavalier Steering RackThe BQM for Cavalier/Sunfire had

received several product reports withcommon elements:

– Steering racks were being replaced for aslip-stick noise/clunk at 20-30,000 miles

– The condition came back after about6,000 miles.

An investigation of about 100 returnedracks resulted in no trouble found. Then theinvestigation shifted to the intermediateshafts, and it was found that the grease wasbeing squeezed out of the spline.

When the steering rack was replaced, theintermediate shaft had to be pushed up,which redistributed the grease. It was thisredistribution of grease that “cured” theoriginal noise, not the replacement of therack.

A new procedure in bulletin 01-02-32-001now calls for replacing the intermediateshaft, not the rack. And a second bulletin isbeing developed to provide a regreaseprocedure, so even the intermediate shaftwon’t have to be replaced.

Corvette HUD ImagesA second story involves the Corvette

Head Up Display (HUD), which projects

instrument panel readouts onto thewindshield so the driver can see themwithout taking their eyes from the road.Some owners were commenting that theHUD image appeared to be double.

One of the early product reports camefrom a dealer in California. When theychecked their new car inventory, some carshad the condition and others didn’t.

The resulting Brand Quality investigationcontinued with a meeting with the glassmanufacturer. The manufacturingspecifications called for tight dimensions onthe edges of the glass to ensure goodinstallation and sealing. But there were nospecs for the area in which the HUD imageis projected. The HUD focuses at a certaindistance, and if the glass does not fall withinthis area, the image is affected.

GM and the glass manufacturer are nowworking together to set a productionstandard and to ensure that glass will bemanufactured within that standard.

Oil Pan Drain Plug LooseA dealer submitted a product report of

four new cars in which the engine oil drainplug was loose. From the day the report wasreceived, all engines still in the factory werehand corrected, while the cause wasinvestigated. This led to the oil pan supplierwho installs the plug into the pan. A mis-adjusted power torque wrench on oneassembly line was identified and correctedwithin just a few days.

Stay alert to product concerns and send inthose product reports to the phone numberabove. And some day, you too maycontribute to one of these success stories.

– Thanks to the Brand Quality Team

How the Voice Mail ExpressSystem is Working

continue

How to Service the New Multi-portFlexible Injection System

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Effective with the start of production forthe 2002 model year, General Motorsintroduced a hybrid design of the SCPI fuelinjection system on several select models:

the 2002 Chevrolet Astro and GMC Safarivans and the 2002 Silverado and Sierrapickups equipped with LU3 V6 and YF5California emissions. This system will bereferred to as Multi-port Flexible Injection.

When you remove the engine’s upperintake plenum, you will notice thedifferences. The new design uses the fuelmeter body from the SCPI injection system.However, the SCPI fuel injector and poppetnozzle have been replaced with the state of

the art Multec 2 fuel injector. A new bracketis used to retain the fuel meter body to theintake manifold.

You will also notice that a white plastic tipis added to the end of the fuel tube. This is aretainer to hold the tip of the fuel tubesecurely in the manifold and pointed towardthe intake port. The tip is quite robust andshould hold the injector in place for the life ofthe vehicle.

You can differentiate the new Multi-portFlexible Injection system from the SCPIsystem by inspecting inside of the manifoldinjector electrical connector socket.Manifolds built with SCPI fuel injection willhave two electrical pins visible and an emptyaccess hole for each injector. Manifolds builtfor the new injection system will have twoelectrical pins and a white post visible foreach injector.

Service IssuesService of the unit involves some careful

consideration. At this time, no cleaning hasbeen recommended for the new systemequipped with Multec 2 injectors.

IMPORTANT: Service bulletin 00-06-04-003 was written to clean and unstickpoppets on SCPI systems. Do NOT useprocedures in this bulletin on Multi-portFlexible Injection systems or permanentdamage to the unit may result.

SCPI injectors and Multec 2 injectors arenot interchangeable, and they should not bemixed within the same fuel meter body.Refer to the service manual for the latestinformation. The retaining bracket for the twounits is also different.

IMPORTANT: At this time you may NOTback-service previous models using the newMulti-port Flexible Injection system unlessdirected by General Motors as part of a fieldvalidation program. Assuming fieldcertification and emissions validation areconfirmed, information regarding back-service vehicle eligibility and installationinstruction will be communicated in arevision to Service Bulletin 00-06-04-003.

– Thanks to Dan Wimer and Jay Dankovich

New Hybrid Fuel Injection System

SCPI System

Interior of Electrical Socket on New System

Multec 2Injector

Plastic Tip

Pin PinWhitePost

TAC Tips

Some owners of 2000-02 Bonneville andLeSabre, and 2001-02 Aurora models with atrunk mounted CD player have asked aboutthe possibility of adding a 12-disc changerto a vehicle that was not originally orderedand built with one.

At present, this is not possible. Thefactory 12-disc changer operates as a partof the vehicle’s class 2 electrical system,and no provision is made for the discchanger to plug into the vehicle’s harness.

Sunroof WindnoiseThe 2002 Chevrolet Avalanche equipped

with a sunroof and the optional accessoryroof rack can generate windnoise when thesunroof is open, depending on thepositioning of the roof rack front cross bow.

If this wind noise is experienced, movethe forward bow rearward until the noise iseliminated. In general, when the roof rack isnot in use, positioning the bows at theextreme rear end produces the least amountof noise.

– GM Technical Assistance

12-Disc CD PlayerThe General Motors Service Parts

Accessory Group is working on thefeasibility of a 12-disc changer package forthese vehicles.

Until this package is available, do notattempt to install the factory 12-discchanger into a vehicle not originally builtwith one, as they are not compatible.

– GM Technical Assistance

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Have you ever wished you had your owninside line to the latest service informationfrom General Motors? Actually, you do.

This month, we want to throw thespotlight on the GM Service Know-HowEmerging Issues Seminar. It’s broadcastusing the Interactive Distance Learning (IDL)facilities. Here’s how it works.

What It IncludesThis is where the “insider” part comes in.

The Emerging Issues Seminar brings youcandid, late-breaking information and servicetips, in many cases even before they’republished in Service Bulletins. In mostbroadcasts, subject matter experts are liveon camera to explain what’s hot in car, truck,and powertrain issues. They are also ready tofield your questions and give you liveanswers during the broadcast.

SchedulingTIP: See the GM Common Training

Program Guide and Schedule for broadcastdates and times.

One day a month, the Emerging IssuesSeminar is broadcast live three times. Each 11/2-hour broadcast repeats the samematerial, so you have three opportunities towatch.

Then later during the month, a tapedversion is rebroadcast numerous times. Oneof those times is regularly scheduled eachWednesday at 6 pm Eastern time.

If you don’t have the opportunity to watchthe Emerging Issues Seminar any of thetimes it’s broadcast, the second best thing isto tape it and then watch it at yourconvenience.

Advantages of WatchingLive

Of course, you’ll gain the most advantage

by watching the live broadcast. First, bysigning up in advance, your IDL keypad willbe “hot” during the broadcast, allowing two-way communication with the subject matterexperts on the show. Second, you will beable to participate in the test, for credit. Andthird, you will be eligible to participate in thedrawing for SnapOn Tool gift certificates.

Get Information on the WebGo to www.gmcommontraining.com and

sign in, using your SSN as ID and password.

– Select Resources

– Select Service Know How

On the Know How menu, you have thefollowing choices:

– Service Know-How Seminar Schedule

Lists when programs will be broadcast.

– Service Know-How Content Index

Contains an outline of the topicsdiscussed during each month’s broadcast.

– Seminar Q & A

Includes answers that could not beaddressed fully during the broadcast. Theyremain on the website for 30 days.

– Seminar Job Aids

Offers printable materials to supplementbroadcasts.

– Service Know-How Videos Released

Listing, by year, of video/booklet releasesthat bring in-depth training on vehiclesystems, diagnostic strategy, and servicehighlights.

– Service Know-How News

Late breaking service news, includingSnapOn Tool gift certificate winners.

Other IDL TrainingAlthough we’ve concentrated on

Emerging Issues Seminars in this article, GMCommon Training offers literally dozens oftraining broadcasts each month. Topics coverall phases of diagnosis and repair of currentvehicle systems. Again, see the CommonTraining guide for monthly schedules,enrollment instructions and prerequisites.

A Real-Life Technician’sIDL Experience

We recently had the opportunity to talkwith Brice Robinson, technician at TeamChevrolet in Smyrna, TN. He’s a dedicateduser of IDL broadcasts.

Robinson watches the live broadcast ofthe shows he’s interested in, and tapes allthe shows for future reference. He says thateven though watching the broadcast maytake away from his work time, it eventuallypays him back later in saved labor time.

Team Chevrolet has the IDL equipmentset up in the technician break room.

Robinson likes all the topics, even bodyand frame subjects, although he doesgeneral repairs, with emphasis on trim andelectrical. Perhaps his favorites are theEmerging Issues Seminars.

“The IDL broadcasts help you stay on topof issues. I want to learn as much as I can,”says Robinson. He also reads the GMTechLink and GM Edge publications foradditional information. He also listens to theVMEs every night, and records them forfuture use.

– Thanks to Ian Doran and Brice Robinson

Your Service Information“Inside Line”

CorrectionThe captions on this photo were reversed

in the Water Leak article on page 6 of theAugust issue.

Owners of some 2002 TrailBlazers,Bravadas and Envoys may comment that thememory seat module shuts down if thememory button is pressed. The module locksup completely, and no scan toolcommunication is possible.

TIP: This correction applies only tovehicles built before VIN 22180054.

In the rear underseat fuse block, locatefuse no. 6 (LGM/DSM fuse). With the ignitionkey off, pull this fuse and wait 30 seconds.

Install the fuse and turn the ignition key on. Ifthe seat now performs normally, replace theseat module. New modules are available.

If the module does not perform normally,refer to the proper service procedures in SI2000.

A bulletin with more information coveringthis condition is being prepared.

– Thanks to Dan Oden and Devin Koski

Memory Seat Module Shuts Down

With new style panel (top), use 25 mm foam.With old style panel (bottom), use 18 mm foam.

8

This review of service bulletinsreleased through mid-September lists thebulletin number, superseded bulletinnumber (if applicable), subject and models.

GENERAL INFORMATION:00-00-90-002A; replaces Bulletin 00-00-

90-002; Proper Tire Pressure; 2001Passenger Cars and Trucks

HVAC:01-01-38-009A; replaces bulletin 01-01-

38-009; Wet Carpet/Odor in PassengerFoot Well Area (Repair Evaporator CaseDrain to Cowl Seal/Open Evaporator CaseDrain); 2002 Buick Rendezvous, 2001Chevrolet Venture, Oldsmobile Silhouette,Pontiac Aztek, Montana

01-01-39-002A; replaces bulletin 01-01-39-002; Noise in Engine Compartmentwith Air Conditioning On, A/C SystemInoperative (Install Redesigned Rear A/CSuction Hose, Replace Compressor);2000-2001 Chevrolet and GMC C/K UtilityModels With Auxiliary Rear A/C (RPO C69)Built Prior to October 10, 2000

01-01-39-003; J-44551 A/C SuctionScreen Kit Repair Recommendations andProcedures After Catastrophic CompressorFailures; 1997-2002 Passenger Cars andLight Duty Trucks with Delphi HD6, HU6,and HT6 Compressors

STEERING:01-02-32-007; Accessory Drive Belt

Whine (Reposition Power Steering PumpPulley); 2001-02 Chevrolet and GMMC C/K1500 Series Utility Models

SUSPENSION:01-03-08-002; Front Suspension

Clunk/Rattle Noise Diagnosis; 1998-2001Chevrolet Malibu, 1998-1999 OldsmobileCutlass, 1999-2001 Oldsmobile Alero,Pontiac Grand Am

BRAKES:01-05-25-006; Revised Excessive

Wheel Speed Variation DTC Tables (C1225,C1226, C1227, C1228); 1998-99 ChevroletVenture, Oldsmobile Silhouette, 1998

Pontiac Trans Sport, 1999 PontiacMontana

ENGINE/PROPULSIONSYSTEM:

01-06-01-019; Excessive Vibration atIdle (Replace Front and Rear EngineMounts); 1998-2001 Chevrolet and GMCB, C, F Medium Duty Models and 2001Chevrolet and GMC B7 School BusModels

01-06-01-022; Information on EngineKnock on Cold Start; 2001-2002 Chevroletand GMC C/K Pickup and Utility Modelswith 6.0L Engine (VIN U – RPO LQ4)

01-06-04-039; Service Engine SoonLamp On, Malfunction Indicator Lamp(MIL) Illuminates Intermittently, DTCs Set,Blown Fuses (Repair Wires and SecureFront Chassis Harness); 1997-2001Chevrolet and GMC 607F T-Series MediumDuty Tilt Cab Models

01-06-04-041; Vehicle Jerking Motion atSpeed of 113 km/h or 70 mph (ReprogramPCM for Correct Speedometer Calibration);2001 Chevrolet and GMC G-Van Modelswith 5.7L Engine (VIN R – RPO L31) andSEO 9B9 (Electronic Speed Sensor)

TRANSMISSION/TRANSAXLE:

01-07-30-025; New Product Information– Adaptive Control Feature of Allison 1000Series Transmission; 2001 Chevrolet andGMC C/K Pickup Models with Allison 1000Series Transmission (RPO M74)

01-07-30-026; TCC Surge/Chuggle/Slipat 72-96 km/h (45-60 mph) with AutomaticTransmission 4T40E (Reprogram PCM);2001 Chevrolet Cavalier, Pontiac Sunfirewith 2.2L engine (VIN – RPO LN2) andautomatic transaxle (RPO MN4)

BODY AND ACCESSORIES:01-08-46-004; Vehicle Integration of

Cellular Phones and Normal OperatingCharacteristics; 2002 and Prior PassengerCars and Trucks

01-08-46-005; Unable to Connect toOnStar® After a Dropped Cellular Call

During Vehicle Configuration; 2002 BuickCentury, Regal, Cadillac DeVille, Seville;Chevrolet Impala, Monte Carlo,Oldsmobile Intrigue, Chevrolet and GMCS/T Utility Models, Oldsmobile Bravada

01-08-46-006; Revised OnStar® AntennaCoupling Replacement Procedures; 2000-01 Passenger Cars and Trucks with GlassMounted Antenna

01-08-49-011; Squeak or Rattle inInstrument Panel Bezel (Add InsulatingTape); 2000-01 Chevrolet Tracker

01-08-49-012; replaces Bulletin 73-83-12; Instrument Panel Compartment LockCylinder Replacement Procedure; 1997-1999 Chevrolet Malibu, OldsmobileCutlass

01-08-50-009; Passenger Front SeatRattles When Unoccupied (RepositionRear of Seat Track Adjuster on Floor);1997-2001 Chevrolet Malibu, 1997-1999Oldsmobile Cutlass

01-08-51-002; New Vehicle Door EdgeProtection; 2002 Passenger Cars and LightDuty Trucks

01-08-56-004; Security LampIlluminated on the IP, Engine Stalls, NoStart, DTC B2960 (Security System SensorData Incorrect but Valid) Set (Inspect andRepair Cause of DTC B2960); 1998-2001Chevrolet and GMC C/K Pickup (Old Style)and Utility Models, 2001 Chevrolet andGMC C/K 3500HD Pickup Models (OldStyle); 1999-2000 Cadillac Escalade

01-08-56-005; Revised Theft DeterrentDiagnostic Information; 2001 Chevroletand GMC C/K, G-Van, M/L-Van, S/T Models

01-08-63-001A; replaces bulletin 01-08-63-001; Hood Hinge Rattle (InstallSpring Washer); 1995-2002 Chevrolet andGMC S/T Pickup and Utility Models (PlantCodes 8 and K) 1996-2001 OldsmobileBravada

01-08-67-003; Squeak from Rear ofConvertible Top (Replace ProtectorAssembly); 1998-2001 Chevrolet Corvette

01-08-67-004; Loose or MissingLuggage (Roof) Rack End Covers (ApplySealant or Replace Side Rails/Covers);2002 Cadillac Escalade

This condition may affect the followingmodels: 2002 Impala, Monte Carlo, Malibu,Cavalier, Venture.

When functioning properly, the CD playershould pull the CD into the radio withoutneed of force. If this does not occur, thefollowing procedure may be required.

The condition has been linked to vehicles

in which the battery cable has beendisconnected and reconnected. When thebattery cable is connected, high voltagetransients may occur momentarily in thevehicle’s electrical system. This may causethe CD player to lose its ability to identify thepresence of a CD.

TIP: This procedure applies only to

vehicles built before early September 2001,when a software correction was put intoproduction.

To reset the radio, remove the fuse thatsupplies power to the radio for 30 seconds,then reinstall it. This should correct thecondition.– Thanks to Zaher Fayyad and Gary McAdam

Bulletins – September 2001

CD Player Will Not Accept a CD