Some customers may comment on one or more of the following conditions: These conditions may be caused by one or all of the following:

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xtooltipelement Service Information 2007 GMC Truck Envoy - 2WD Envoy, Rainier, TrailBlazer, Ascender VIN S/T Service Manual Body Systems Fixed and Moveable Windows Schematic and Routing Diagrams

Rear Liftgate Glass Button Depressed - (Sep 13, 2007) Rear Liftgate Glass May Not Lock When Using Remote Keyless Entry (RKE), Key Fob Transmitter or Door Lock Switch, And/Or Liftgate Subject: Hatch

1 xtooltipelement Service Information 2007 GMC Truck Envoy - 2WD Envoy, Rainier, TrailBlazer, Ascender VIN S/T Service Manual Body Systems Fixed and Moveable Windows Schematic and Routing Diagrams Document ID: # : Rear Liftgate Glass May Not Lock When Using Remote Keyless Entry (RKE)/Key Fob Transmitter/Door Lock Switch, Lifgtate Hatch or Liftgate Glass May Lock/Unlock When Rear Liftgate Glass Button Depressed - (Sep 13, 2007) Rear Liftgate Glass May Not Lock When Using Remote Keyless Entry (RKE), Key Fob Transmitter or Door Lock Switch, And/Or Liftgate Subject: Hatch Or Liftgate Glass May Lock Then Unlock When Rear Liftgate Glass Button is Depressed (Reposition Lock Cylinder Wave Washer and Adjust Lock Rod) Buick Rainier Chevrolet TrailBlazer, TrailBlazer EXT, TrailBlazer SS Models: GMC Envoy, Envoy XL, Envoy Denali Saab 9-7X Do This Reposition liftgate lock cylinder wave washer and adjust lock rod. Condition Don't Do This DO NOT replace the liftgate latch or actuator. Some customers may comment on one or more of the following conditions: The rear liftgate glass may not lock when using the remote keyless entry (RKE), key fob transmitter or door lock switch unless the lock is pressed a second time. The rear liftgate or glass locks, but may be unlocked when the rear liftgate lock cylinder button is depressed. The rear liftgate locks but the liftgate glass may not lock. Cause These conditions may be caused by one or all of the following: The rear liftgate cylinder lock rod may be out of adjustment.

The wave washer on the liftgate lock cylinder may be out of position with the cup side down (1). Excessive movement or slack in the lock rods at the liftgate bell crank assembly.

2 The wave washer on the liftgate lock cylinder may be out of position with the cup side down (1). Excessive movement or slack in the lock rods at the liftgate bell crank assembly. The liftgate lock cylinder pawl (1) may contact the rear liftgate glass latch when the lock cylinder button is depressed. Correction Important: Do Not remove the rear liftgate lock cylinder from the vehicle to perform this repair.

Reposition the rear liftgate lock cylinder wave washer and adjust the lock rod using the steps below. 1. Verify the customer's condition. 2. Open the liftgate. 3.

3 Reposition the rear liftgate lock cylinder wave washer and adjust the lock rod using the steps below. 1. Verify the customer's condition. 2. Open the liftgate. 3. Remove the upper liftgate garnish molding. Refer to Liftgate Garnish Molding Replacement. 4. Remove the rear liftgate trim panel. Refer to Liftgate Trim Panel Replacement in SI. 5. Remove the cylinder lock rod from the threaded lock rod retaining clip (1). Tip: Place the tip of a screwdriver blade into the opening of the C-clip and slowly rotate the screwdriver to pry out the C-clip from the shaft. Then use needle-nose pliers to remove the C-clip.

4 6. Remove the C-clip (1) from the rear liftgate lock cylinder push button and remove the wave washer (2). 7. Install the wave washer with the cup side up (1).

Install the C-clip onto the shaft and in the slot using needle nose pliers. Then rotate the pawl several times to make sure the C-clip does not rotate.

5 8. Position the wave washer (1) with the curved edges of the wave spring parallel to the tabs (2) on the lock cylinder shaft. Important: Use needle-nose pliers to slightly squeeze the C-clip back into shape. Make sure the clip seated, you should feel a snap and hear an audible click. 9. Install the C-clip onto the shaft and in the slot using needle nose pliers. Then rotate the pawl several times to make sure the C-clip does not rotate. If the clip rotates then the clip is not fully seated. 10. Position the lock cylinder pawl to the full clockwise position. 11. Pull up on the cylinder lock rod to remove any slack in the bell crank. 12. Install the cylinder lock rod into the threaded lock rod retaining clip while removing any slack from the lock rod linkage.

6 13. Close the lock rod retainer clip. 14. Close the liftgate assembly. 15. Open the liftgate glass while keeping the liftgate closed. 16. Use the key fob to cycle the liftgate to the lock and unlock position while inspecting the rear liftgate pawl. The lock cylinder pawl should have clearance between the latch as shown above. If the pawl is contacting the latch, readjust the cylinder lock rod. 17. Verify that the customer's condition has been corrected. 18. Install the rear liftgate trim panel. Refer to Liftgate Trim Panel Replacement in SI. 19. Install the upper liftgate garnish molding. Refer to Liftgate Garnish Molding Replacement. Warranty Information (excluding Saab U.S. Models) For vehicles repaired under warranty, use: Labor Operation C9816* Description Reposition Liftgate Lock Cylinder Wave Washer And Adjust Lock Rod Labor Time 0.4 hr *This labor operation number is for bulletin use only. This number will not be published in the Labor Time Guide. Warranty Information (Saab U.S. Models) For vehicles repaired under warranty, use:

Labor Failed Fault/Reason Location Warranty Repair/Action Labor Operation Description Object Code Code Type Code Time Reposition Liftgate Lock 8345303* Cylinder Wave Washer And Adjust Lock Rod 83453

7 Labor Failed Fault/Reason Location Warranty Repair/Action Labor Operation Description Object Code Code Type Code Time Reposition Liftgate Lock * Cylinder Wave Washer And Adjust Lock Rod hr *This labor operation number is for bulletin use only only. This number will not be published in STM. GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION You are about to leave the website of General Motors and view the content of an external website. That website is not owned or controlled by, or affiliated with General Motors or its subsidiaries, and it is subject to its separate terms and conditions and other agreements, as well as its privacy policies. General Motors cannot be held responsible for the content of external websites. OK Cancel Warning 2018 General Motors. All rights reserved.

Some customers may comment that the Service 4WD light is on, the 4WD system is inoperative or the 4WD switch indicator lights are blinking.

Some customers may comment that the Service 4WD light is on, the 4WD system is inoperative or the 4WD switch indicator lights are blinking. #04-04-21-004: 4WD Switch Indicator Lights Flashing, 4WD Inoperative, DTCs C0327, C0550 Set (Replace Transfer Case Encoder Sensor, Reprogram TCCM) - (Dec 16, 2004) Subject: 4WD Switch Indicator Lights