April 2009 Archives

2010 Camaro Is Here

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Ever since the previous Camaro ended production in 2002, enthusiasts have been anxiously awaiting the return of their favorite automotive icon. The wait is over, and the wait has been worth it. The F-car is back (fig. 1).

April_09_Techlink_Fig1.jpg


This all-new 2-door sports coupe is available in all of the familiar flavors -- the base model, the LT, and the SS. And there's an RS package available on the LT and SS models. All of the styling cues are intact -- the prominent grille with recessed headlamps, the SS front air scoop, the gills on the rear quarters, dual exhaust outlets, even the auxiliary instrumentation on the console.

POWERTRAIN Engines

The base engine is far from basic. It's the 3.6L LLT SIDI VVT DOHC V6 (fig. 2).

April_09_Techlink_Fig2.jpg

With variable valve timing and dual overhead camshafts, it provides 304 HP (227 kW) and 273 lb-ft (370 Nm) of torque.

Direct injection (see TechLink, December 2008) delivers fuel directly into the combustion chamber, resulting in a more complete burn of the air/fuel mixture. Other advanced features include variable valve timing, roller chain cam drive, and piston cooling jets for lower temperature and increased durability. This engine runs on regular unleaded gasoline.
If more power is desired, there's the 6.2L OHV V8. It comes in two versions. The L99 (fig. 3)

April_09_Techlink_Fig3.jpg

for cars with automatic transmission offers 400 HP (298kW) and 410 lb-ft (556 Nm), and the LS3 (fig. 4)

April_09_Techlink_Fig4.jpg

for cars with manual transmission offers 426 HP (318 kW) and 420 lb-ft (569 Nm). The L99 also comes with Active Fuel Management. All feature aluminum block and heads.

Transmissions

Both engines are available with either manual or automatic transmissions. An Aisin Warner 6-speed manual comes with the V6 and a Tremec TR6060 comes with the V8.

And both engines are also available with 6-speed automatics, the 6L50 on the V6 and the 6L80 on the V8, which feature TAPshift. This transmission can be shifted manually with steering wheel paddles or as a fully automatic. Performance Algorithm Liftfoot (PAL) detects performance driving and holds upshifts and downshifts. Additionally, the 6L80 on V8s has an internal cooler.

CHASSIS
(fig. 5)

April_09_Techlink_Fig5.jpg


Performance and Handling

Selectable StabiliTrak provides 3 operating modes on the V6 and 4 modes on the V8:
    
- StabiliTrak on
- Traction control off, StabiliTrak on
- Competitive/Sport mode limits StabiliTrak and ABS intervention for competition driving
  (V8 only)
- Traction control and StabiliTrak off

Additionally, a limited slip differential is optional on LS/LT manual, standard on SS. And manual V8s offer Vehicle Launch Control, which uses traction control and torque management to minimize wheelspin and optimize straight-line acceleration.

Brakes

Four-wheel discs are provided with ABS. On the LS/LT, there are 12.6-inch front and 12.4-inch rear discs, vented with 1-piston calipers. The SS steps up with 14-inch front and 14.4-inch rear discs, vented with Brembo 4-piston calipers.

Suspension

Front suspension (fig. 6)

April_09_Techlink_Fig6.jpg

includes struts, stabilizer bar, lower control arm with stiff lateral bushings for handling, and upper tension arm with hydraulic bushing for ride. The stabilizer bar mounts directly to the strut for exceptional roll control.

Independent rear suspension (fig. 7)

April_09_Techlink_Fig7.jpg

includes upper, lower, trailing and toe links. The upper link has an L-shaped arm with ride bushing. The lower control arm provides for camber adjustment. And the trailing link controls longitudinal motion of the wheel under acceleration and braking. This suspension system offers lower unsprung weight than a solid axle.

Steering

The variable-rate rack and pinion steering rack is mounted forward of the axle for precise feel, and offers a 37.7 foot (11.5 meter) turning diameter.

Wheels and Tires

Wheels range from 18x7.5-inch steel on the LS, to 18x7.5-inch aluminum or 19x8-inch aluminum on the LT, to 20x8-inch (front) and 20x9-inch (rear) on the SS (fig. 8).

April_09_Techlink_Fig8.jpg

Tires include P245/55R18 all-season, P245/50R19 all-season, P245/45ZR20 summer (front) and P245/40ZR20 summer (rear). Additionally, 21-inch wheels and tires are an LPO option.

TIP: It is highly recommended that the owner purchase winter tires if they plan to drive the SS Camaro in winter.

BODY FEATURES

Standard features include automatic headlamp control, air conditioning (with filtration), adjustable steering with manual rake and telescoping steering column, programmable power locks with remote keyless entry, power windows, cruise control with steering wheel controls, DIC with compass and outside temperature, oil life monitoring system, XM radio, 2 cupholders, door map pockets, 12-volt outlet in console and rear seat passthrough.
The Camaro uses a window indexing feature to help eliminate wind noise. The windows open slightly then the door is opened, and then move back to the closed position when the door is closed.

The Camaro uses side-milled keys with a flip-out fob (see TechLink, October 2007) (fig. 9).

April_09_Techlink_Fig9.jpg

Available equipment includes sunroof, HID headlamps, remote start (with automatic transmission), universal home remote, and auto dimming inside and driver side mirrors, Bluetooth for phone, USB port for iPod/MP3, steering wheel audio controls, turn-by-turn navigation and Boston Acoustics 9-speaker 245-watt audio system.

Safety equipment includes OnStar, 6 air bags (including thorax), front seat belt load limiters and pretensioners, extended front crush zone, and ultrahigh strength steel rocker panels.

The passenger presence module and bladder system are serviced separately.
The RS package features HID headlamps and specific LED taillamps (fig. 10 and 11)).

April_09_Techlink_Fig10.jpg






April_09_Techlink_Fig11.jpg

On vehicles with HID lighting, the lower lighting on the front fascia is used as daytime running lamps. The standard lighting package uses the lower lighting  as fog lamps.

Auxiliary analog gauges on the console (certain models) include oil pressure, battery, voltage, oil temperature and transmission fluid temperature (fig. 12).

April_09_Techlink_Fig12.jpg

The heavy duty battery, with rundown protection and retained accessory power, is located in the trunk, contributing to the excellent 52%/48% weight distribution.

The accessory power outlets shut down when the vehicle is turned off to further enhance the rundown protection capability.

(fig. 13)

April_09_Techlink_Fig13.jpg
- Thanks to Marty Case and Chris Graham











Buyer Beware: Counterfeit Tools

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Whatever you want, chances are you can find it on the web. But one of the chances you take when buying items through an online sale or an auction website is if they're the real thing or fakes.
 
GM and Bosch Diagnostics have discovered counterfeit Tech 2 scan tools and GM Control Area Network diagnostic interface (CANdi) modules available to the aftermarket through online auction websites and other retail websites.

These tools appear very authentic from their exterior appearance. Everything is copied to closely resemble the real thing -- from the cables and plastic cases to the brand logos and serial numbers. However, some of these counterfeit tools acquired by GM and Bosch Diagnostics have been found to be built with lower grade components and electronics or with used equipment from other diagnostic tools. As a result, some of the counterfeit tools will not work right from the start, may fail quickly or will run extremely slowly.

You will also find these tools priced less than from an approved GM retailer like GM Dealer Equipment or Bosch Diagnostics. In some cases, they will be significantly less -- another sign that the tool may be a fake.

Can you tell the difference (fig. 14)?

April_09_Techlink_Fig14.jpg

The top CANdi module is counterfeit.

Scan tools and diagnostic tools such as the Tech 2 and CANdi module are large investments for many service departments. For buyers to ensure that they are getting the real tool, and the tech support and warranty protection (authentic Tech 2 scan tools and CANdi modules include a two-year warranty) that comes with it, purchases should only be made from approved retail channels such as GM Dealer Equipment or Bosch Diagnostics.
 
The bottom line may be that if the online deal for diagnostic and scan tools seems too good to be true, it probably is.

- Thanks to Bob Stewart and Mike Waszczenko


Intermittent Battery Draw

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Some customers may comment on an intermittent battery draw concern. This applies only to vehicles with a navigation radio and rear park assist. The radio may stay powered up if the rear park assist alarm is going off when very close to an object (continuous chime) and the ignition key is turned off before the chime cycle completes. This happens due to a software anomaly in handling the chime. Even when the conditions are right, this is an intermittent concern, and is hard to duplicate.

Two different bulletins have been released to address this condition, depending on model and year.

PIT4770 applies to 2007-08 Acadia and Outlook U3R UZR and 2008 Enclave U3R UZR with navigation radio and rear park assist.

For these vehicles, engineering is aware of this concern and is working on a software fix. Information will be updated when a fix becomes available.

PIT4771A applies to 2009 Enclave, Lucerne, Traverse, Acadia and Outlook with navigation radio and rear park assist.

For these vehicles, reprogram the navigation radio with the latest calibrations in TIS. Under the operating system there is a calibration titled "New software to correct continuous chime and potential battery run-down condition".

- Thanks to Ron Erman and Jim Will

GM Performance Parts -- LNF Turbo Upgrade Kit

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April_09_Techlink_Fig17a.jpg

April_09_Techlink_Fig17b.jpg

April_09_Techlink_Fig17c.jpg

A turbo upgrade kit for the Solstice GXP, SKY Redline, and HHR SS was designed by General Motors Performance Division engineers to get the most power possible out of the 2.0 Liter LNF Turbo engine (fig. 15).

April_09_Techlink_Fig15.jpg

This kit (p/n 19212670) increases performance from 260 hp and 260 ft-lbs to 290 hp and as much as 340 ft-lbs of torque, and will still retain the full factory warranty. The kit provides emission standards that accommodate the legal criteria in all 50 states, and will not affect the driveability of the vehicle in any way. Because of the different drivetrain combinations, there are several different calibrations with slightly different power outputs. The kit is described in detail at http://gmperformancedivision.com.

Initially, the kit will be available for 2007-09 Solstice GXP and SKY Redline and  2008-09 HHR SS. A kit in the works for the Cobalt SS will carry a different part number and will have different kit content. A new air cleaner and turbo inlet duct will be included.
 
KIT BENEFITS

   

 

 

Torque

Horsepower

Production

260 lb-ft @ 5200

260 HP* @ 5200

Solstice/SKY (manual)

340 lb-ft @ 3600

290 HP @ 5200

Solstice/SKY (automatic)

325 lb-ft @ 3600

290 HP @ 5200

HHR SS (manual/automatic)

315 lb-ft @ 4800

290 HP @ 5200

* 235 HP with automatic transmission


In addition to the increased torque and horsepower, the kit raises the maximum RPM to 6500 and also disables the "torque learn-down" feature of the ECM. In the programming of the factory ECM, torque learn-down constantly monitors engine torque and limits it to 260 lb-ft, even when non-factory-authorized torque increasing components are installed (such as air cleaners, exhaust systems, etc.).

The Solstice and SKY with manual transmission also get no-lift shift (HHR SS already has this) which permits holding the throttle open while the transmission is upshifted, for greater acceleration.

KIT CONTENTS

(fig. 16)

April_09_Techlink_Fig16.jpg



 

Part Numbers
for Kit
p/n 19212670

Quantity

Item

55206797

2

TMAP Sensor -- 3.0 bar

11589015

1

Bolt

12626998

2

O-ring -- TMAP sensor

88988320

2

Connector -- pigtail

12602863

1

Label -- Premium Fuel Only

12626987

1

Label -- Emission Certification

19212711

1

Instructions -- with serialized calibration number



TIP: Some early kits may have been shipped without the Premium Fuel Only label and Emission Certification Label.
 
KIT INSTALLATION

Kit installation is simple (fig. 17).

April_09_Techlink_Fig17.jpg

Two sensors must be replaced, along with their wiring connectors and O-rings. And the ECM must be reprogrammed.

The MAP sensor in the intake manifold and the TMAP sensor in the duct between the intercooler and intake manifold are replaced with two new TMAP sensors. The fitting on the kit TMAP sensor is different from the OEM sensor and requires a different O-ring.

TIP: The O-rings in the kit are identical to the blue O-rings used on fuel injector tips.

TIP: On the HHR SS, it is necessary to modify the TMAP sensor before installing into the intercooler duct, following details in the instruction sheet.

Because the replacement sensors have different terminals than the originals, it's necessary to splice new connectors from the kit in place of the standard connectors (fig. 18).

April_09_Techlink_Fig18.jpg
 
TIP: When splicing the harness wires to the pigtails on the new connectors, carefully observe cavity locations and wire colors portrayed in the instruction sheet.

TIP: Use the splice sleeves included in the kit and use the proper crimping tool from the J-38125 terminal repair kit.

Reprogram the ECM using the serialized calibration number on the instruction sheet. Call TCSC for the VCI download. Install the Premium Fuel and Emission Certification labels.

TIP: The calibration number is good for one VCI download only.

TIP: Be sure to point out to the owner that premium fuel is required when the Turbo Kit is installed.

INSTALLATION ISSUES

TIP: Check SI for relevant bulletins. At the time of this printing, there are two known bulletins: PIP4551 and PIP4559.

No start -- most likely due to wires 1 and 3 crossed in the inlet duct TMAP sensor.

P2227 code set -- (1) The reprogramming may not have completed correctly. (2) The car may have been driven on the new sensors without reprogramming.

TIP: It takes 2 key cycles for code P2227 to set. Be sure to cycle the key at least twice before turning the vehicle over to the customer.

Sensor contacts the AC line on HHR -- bend AC line slightly.

P0236 code set -- (1) Only one sensor was replaced (on HHR SS, the TMAP on the inlet duct is difficult to access). (2) TMAP on inlet duct wired wrong (terminal 1 mistaken for terminal 4).

- Thanks to Bill Duncan











No Forward Or Reverse

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A 2007-08 SRX, STS, 2008 CTS equipped with 6L50 (RPO MYB) automatic transmission may have no forward or reverse or no input or output speed signal after valve body installation or replacement.

According to bulletin 09-07-30-005, this may be caused by the installation of the incorrect center support fluid passage seal or upper valve body assembly. The center support fluid passage seal for the 6L50 is approximately 5/16 inch (8 mm) taller than the seal used on the 6L80 / 6L90 (fig. 19).

April_09_Techlink_Fig19.jpg

The 6L50 seal can also be identified by the metal tabs or wings extending from the ends of the seal. The shorter 6L80 / 6L90 part will not seal the valve body to the center support resulting in an internal fluid leak.

A  Seal for 6L50 is taller
B  Seal for 6L80 / 6L90 is lower
C  Seal for 6L50 has tabs

Also, the 6L50 upper valve body center support oil transfer holes are in a different location than on the 6L80 / 6L90 valve body (fig. 20).

April_09_Techlink_Fig20.jpg

Installation of the 6L80 / 6L90 upper valve body may result in an internal fluid leak with no forward or reverse.

A  Hole location for 6L50
B  Hole location for 6L80 / 6L90

Finally, installation of a 6L80 / 6L90 upper valve body will not place the input and output speed sensors close enough to their respective drums to generate a speed signal. The bosses are milled at different heights (fig. 21).

April_09_Techlink_Fig21.jpg

A  Bosses for 6L50 taller
B  Bosses for 6L80 / 6L90 lower

If these conditions are encountered, check the P/Ns used in the repair to verify that they are the appropriate parts for the 6L50 (MYB).
 
Upper valve bodies can be identified by observing the machining of the small posts in the illustration (fig. 22).

April_09_Techlink_Fig22.jpg

The post is milled to indicate A, B, C or D.

Post    Corresponds to
A    not currently used
B    MYB / 6L50
C    MYC / 6L80
D    MHD / 6L90

- Thanks to Mike Johnston   





Liftgate Programming

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This information applies to the following vehicles:
 
2006-09 SRX
2007-09 Fullsize Utilities, Outlook, Enclave and Acadia
2009 Traverse

When programming the service power liftgate control module, the pass-through option in TIS2web MUST be used. Using the remote option TIS2web will NOT work, with no communication between the Tech 2 and PLG module.
 
- Thanks to Tom Nguyen

TPM Sensor Learn Procedure - A Preferred Method

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Some customers may experience a Service Tire Monitor message light that occurs after tire rotation or sensor replacement, and a sensor learn process has been performed.

To avoid such an incident, GM recommends using the combination of a scan tool and J-46079 tool to learn sensors rather than entering TPM Sensor Learn through the keyless entry transmitter.

TIP: When the keyless entry transmitter method is used, the TPM system may pick up stray signals from other TPM-equipped vehicles nearby. Using the scan tool and J-46079 eliminates this possibility.

For a detailed description of the Preferred Scan Tool Learn Enable Method, refer to SI document 2132769. Here are highlights.

Using a scan tool, initiate the TPM Learn Mode. A double horn chirp indicates the Learn Mode has been enabled.

TIP: The turn signal lamp will illuminate on the corner of the vehicle to indicate which sensor is to be learned, beginning with the left front.
The sensors are learned in this order:

- Left front
- Right front
- Right rear
- Left rear

Starting with the left front tire, activate the sensor by holding the antenna of the J-46079 aimed upward against the tire sidewall close to the wheel rim at the valve stem location. Press and release the Activate button and wait for a horn chirp. Once the horn chirp has sounded, the sensor information is learned and the turn signal in the next location to be learned will illuminate.

Repeat these steps until the last sensor has been learned, indicated by a double horn chirp. The learn process is now complete and the RCDLR exits the learn mode.

Turn the ignition OFF and adjust all tires to the recommended pressures.

HOW TO POSITION THE ANTENNA OF THE J-46079 TESTER

TIP: When activating a sensor, placement of the antenna of the J-46079 Tester is critical, especially with the latest software update.

When activating a sensor, the antenna tip of the J-46079 Tester must be placed on the sidewall, perpendicular to the tire, and close to the valve stem (fig. 23).

April_09_Techlink_Fig23.jpg

This assures proper activation of the sensor. If the antenna is placed either on the valve stem or on the wheel itself, the tool may not properly activate the sensor, causing improper diagnosis.

FACTS ABOUT TPM SENSOR LEARN

What is TPM Sensor Learn?

Each sensor has its own unique identification code (ID) that is transmitted as part of its wireless signal. The receiver stores and uses these IDs to determine which sensors are installed on the vehicle, and on which corner of the vehicle each sensor is located (so that both the pressure information provided in the Driver Information Center and the diagnostics are correct). Sensor learn is the process that puts sensor ID information into the receiver.

When should TPM Sensor Learn be performed?

Sensor Learn should be done when the vehicle's tires are rotated (because sensor position on the vehicle has changed) or when a sensor is replaced or a new sensor is installed (because a new ID has been introduced to the vehicle). Sensor learn is not required when a problem is resolved simply by correcting the tire pressure.

What is the meaning of dashes ("- -") or a pressure value of 148 psi (1024 kPa)?

The dashes ("- -") may display on the DIC or a readout of 148 psi (1024 kPa) may appear on the Tech 2 after the battery is disconnected and reconnected because the system is waiting for updated pressure information to be sent from the tire pressure sensors. As each sensor transmits its information, the display is updated appropriately.

When dashes ("- -") or 148 PSI (1020 kPa) are displayed after the battery is disconnected and reconnected, the System Malfunction warning is NOT displayed because the system is still working properly, and is simply waiting for updated information from the sensors.

Driving the vehicle above 20 mph (32 km/h) for 2 minutes activates the sensors and restores the correct pressure values to the display. It is also possible to restore the values with the J-46079 TPM Tester, using the "Activate" function at each tire to activate the sensor (it is NOT necessary to put the system into Learn mode in this special case).

VEHICLES INVOLVED

All vehicles below support the preferred TPM Sensor Learn method using the scan tool and J-46079 Tester:

MY 2008 and beyond
Malibu
G5
G6
AURA
Cobalt
HHR
SKY
Solstice

MY 2009 and beyond
Impala
DTS
Lucerne
All fullsize trucks
Enclave/OUTLOOK/Acadia/Traverse
VUE
Savana/Express
CTS
H2
Torrent/Equinox
G8
SRX

- Thanks to Hiram Gahima


Transmission Pressure Testing

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This information applies to the Escalade, Tahoe, Yukon, Silverado, and  Sierra Two-Mode Hybrid equipped with a 2ML70 transmission RPO M99.

When performing diagnosis on the vehicles listed above equipped with the 2ML70 transmission, it may be necessary to check the main fluid pump or auxiliary fluid pump pressure. You may find that you are unable to attach a pressure gauge.

To attach the pressure gauge to the transmission, use adapter fitting J45056. This adapter was originally released to aid in pressure testing the Allison LCT1000 transmission and includes an O-ring type seal. This tool is currently available through SPX/Kent-Moore.

- Thanks to Chuck Krepp

Transfer Case Dowel Pins

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On an SRX, STS or CTS equipped with 6L50E (RPO MYB) automatic transmission and AWD (RPO MX7), when the transfer case is removed from the transmission for any type of repair, the two alignment dowel pins may pull out of the transfer case and remain in the transfer case adapter. These alignment dowels are located at approximately 4 o'clock and 11 o'clock positions when viewing the transfer case from the front. If these alignment pins are not properly installed into the transfer case, they may be pushed into the adapter and not properly engage the transfer case. If this happens, alignment between the transmission and transfer case may not be properly maintained and damage to the transmission or transfer case may result.

Make sure the alignment dowel pins are pressed into the transfer case, NOT the adapter, before installing the transfer case to the transmission. If the dowel pins are in the adapter, remove and clean them, then install them in the proper locations in the transfer case before reattaching the transfer case to the transmission.

- Thanks to Chuck Krepp

A/C Inoperative and No DTCs Set

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Some owners of a 2007-09 Colorado or Canyon or a 2006-09 Hummer H3 may comment that their A/C is inoperative. Further diagnosis may reveal no DTCs set. This condition may be caused by an open A/C fuse due to a shorted A/C diode located in the underhood fuse block.

Inspect the A/C CMPRSR fuse located in the underhood fuse block. If the A/C CMPRSR fuse is open, replace this fuse and A/C diode located in the underhood fuse block. Refer to SI or the fuse box cover to locate the A/C CMPRSR fuse and diode location. If the A/C CMPRSR fuse is not open, follow normal diagnostic procedures using SI.

TIP: If the A/C CMPRSR fuse is found to be open, DO NOT replace the entire underhood fuse block to correct this condition. Replace only the A/C CMPRSR fuse and diode. These items are available from SPO without the replacement of the entire underhood fuse block.

- Thanks to Dino Poulos


High Idle Speeds

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This information applies to the 2009 CTS, Acadia, Enclave, and Traverse equipped with the 3.6L V6 engine.

A vehicle with less than 500 miles (800 kilometers) may have an engine high idle RPM concern.

PAM (Plant Assembly Mode) is a feature on vehicles with RVC (Regulated Voltage Control). It is active for the first 500 miles of the vehicle's life. After that, PAM is no longer active.

When the field generator duty cycle is greater than 80%, PAM will boost the idle speed. Every 20 minutes, RVC will recheck the field generator duty cycle, and if it is less than 80%, boosted idle speeds will no longer be active.

This is a normal operating characteristic. Do not attempt to repair.

- Thanks to Mark Alward

Swapping Parts Between Vehicles

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This information applies to Colorado, Canyon, H3 and H3T.

Although technicians have sometimes swapped parts between vehicles to isolate service issues, with today's technology, there are some parts you cannot swap. If you swap either the instrument panel cluster or BCM between vehicles, you can cause a number of PCM issues, as well as odometer issues and radio lock-ups.

Do not swap BCMs or instrument panel clusters between vehicles on a Colorado, Canyon or a Hummer H3. If a BCM or an instrument panel cluster needs to be replaced, use ONLY new SPO parts when replacing the BCM and utilize the Service Exchange Centers when replacing the instrument panel cluster.

- Thanks to Dino Poulos

Car Issues -- Fix It Right The First Time

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ModelYears

Condition

Do This

Don't Do this

Reference Information / Bulletin Number

2008-09

HHR -- Hard brake pedal

Add vacuum booster pump to system

Don't recalibrate EBCM

09-05-22-001

2009

CTS -- Navigation radio turns on unexpectedly 

Install updated radio software

Don't replace radio

08-08-44-019A

2009

CTS --Radio and ICS inoperative

Install current calibration for SPS

Don't replace radio or integrated center stack

PIC5089

2004-09

Malibu, Maxx, G6, Aura -- Fuel gauge not reading full, P0461

Repair fuel level sender float

Don't replace fuel level sender or pump module

09-06-04-007

2008-09

Z06 Corvette -- SES light, P0420, P0430 

Reprogram ECM

Don't replace catalytic converters

PIP4498B

2008-09

CTS -- Clunk noise from rear on bumps 

Install new bushing on lower control arm

Don't replace lower contol arm, cradle, shocks, stabilizer links

08-03-09-002A

2008

STS -- CEL, P0174

Check for vaccum leak, replace ECM

Don't replace fuel pump or injectors

09-06-04-003

2007-09

Allure, Grand Prix, LaCrosse -- MIL, hesitation reduced power, multiple DTCs 

Remove moisture from connectors, apply dielectric lubricant

Don't replace PCM or sensors

08-06-04-041B

2008-09

Malibu -- Loose foam seal between rear shelf and glass

Install new foam

Don't replace rear shelf

09-08-110-001

2007-09

SRX, STS, CTS -- Information on 6L50 transmission parts

Correctly identify transmission before ordering parts

Don't install parts for 6L80/6L90

09-07-30-005

Truck Issues -- Fix It Right The First Time

| No Comments

 


Model Year

Vehicle Lines(s) / Condition

Do This

 

Don't Do This

Reference Information / Bulletin Number

 



2009

Fullsize utilities -- Various navigation radio anomalies

Install software update

Don't replace radio

08-08-44-030B




2008


Vue -- Compass flashing intermittently
Reprogram IPC
Don't replace cluster, compass or BCM
09-08-49-001


2008-09

Tahoe, Yukon Hybrid -- Taillamp inoperative

Inspect connector

Don't replace taillamp

09-08-42-002



2005-08

Equinox, Torrent -- MIL, P0442 or P0455 Set 

Inspect, replace rubber grommet

Don't replace fuel cap

09-06-04-001



2009

Traverse -- Park brake lever will not release

Adjust metal flange on park brake base bracket

Don't replace parking brake assembly

09-08-42-002



2008-09

Acadia, Enclave, Outlook, Traverse -- Pinched wire, SIR, B0014, B0021 

Repair wires, connector between airbag and harness

Don't replace SDM, sensor, airbag

08-09-41-011B



2008-09

Vue -- Squeak while turning steering wheel 

Modify boot, install new I-shaft bolts

Don't lubricate or replace I-shaft

09-02-35-001



2008-09

Fullsize truck -- MIL, various codes

Replace fuel tank pressure sensor

Don't replace fuel tank pump module

PIT4798



2007-09

Fullsize trucks, crossovers, CTS -- Intermittent dead battery

Address source of battery drain

Don't replace components 

09-08-44-001
PIT 4782
PIT 4783
PIC 5090
PIT 4771




2007-09


Fullsize trucks -- Left outside mirror shake, flutter
Relearn mirror, replace glass
Don't replace entire mirror
06-08-64-027F








 


 

Know-How Broadcasts for May

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idl_logo.jpg


Know-How

Broadcasts

for

May

10209.05D

 Emerging Issues

May 14, 2009

9:30 AM and 12:30 PM Eastern Time

New Model Features

For Web NMF courses, log on to the GM Training Website (www.gmtraining.com). Select Service Know-How/TechAssists from the menu, then choose New Model Features for a selection of courses.



- Thanks to John Miller


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