Lucerne V6-3.9L (2009)
Transmission Mount: All Technical Service Bulletins
Steering/Suspension - Vehicle Pull to the Right on Accel
TECHNICAL
Bulletin No.: 06-08-61-007A
Date: April 29, 2008
Subject:
Vehicle Pulls to Right During Acceleration or at Highway Speeds (Add Shim Between Engine Cradle and Right Rear Engine Mount and/or Modify
Transmission Mount Bracket)
Models:
2006-2009 Buick Lucerne
with V6 Engine
Supercede:
This bulletin is being revised to update the model years and remove the VIN breakpoint information. Please discard Corporate Bulletin Number
06-08-61-007 (Section 08 - Body and Accessories).
Condition
Some customers may comment that the vehicle pulls to the right during acceleration or when driving straight at highway speeds.
Correction
Follow the steps below to diagnose and repair the vehicle if necessary.
1.
Perform an initial vehicle inspection.
1.
Check tire pressures and visually inspect the tires for damage or abnormal wear. Refer to placard for correct tire pressure.
2.
Perform a visual inspection of the front suspension for abnormal wear or damage.
3.
Check the wheel alignment. Refer to Measuring Wheel Alignment and Wheel Alignment Specifications in SI.
2.
If the customer concern is not caused by any issue identified in Step 1 perform the Vehicle Test Drive Evaluation/Analysis procedure in this
bulletin.
3.
Perform the following steps based on the outcome of the test drive evaluation/analysis:
^
If the right pull condition is severe and primarily apparent during acceleration perform the Transmission Mount Bracket Modification
procedure in this bulletin.
^
If the right pull condition is significantly reduced at a constant speed when the vehicle is in Neutral go to the Engine Mount Shim Repair
procedure in this bulletin.
^
If the right pull condition is not significantly different with vehicle in DRIVE vs. NEUTRAL contact GM TAC for further diagnostic
assistance.
^
If the vehicle pulls to LEFT contact GM TAC for further diagnostic assistance.
4.
Confirm that the customer concern has been resolved.
Vehicle Test Drive Evaluation/Analysis Procedure
1.
Drive the vehicle on a dry straight, smooth level road at 64-97 km/h (40-60 mph). Record the vehicle direction and amount of pull/lead or effort
required to maintain a straight heading.
2.
Remove your foot from the accelerator.
3.
Shift the transmission into NEUTRAL in order to allow the vehicle to coast. Record the vehicle direction and amount of pull/lead or effort
required to maintain a straight heading.
