Repairing the ’06-’09 Buick Lucerne Front Door Lock

TECH TIPS: Repairing the ’06-’09 Buick Lucerne Front Door Lock

figure 1figure 2Too many times during a busy day, we often overlook what may be an important update or new procedure for repairing a vehicle. Manufacturers’ updates, Technical Service Bulletins (TSBs) and recalls can offer critical information for the estimator or technician. TSBs help shop personnel keep abreast of common problems or solutions that have been discovered by industry professionals and reported to the manufacturer. Without access to this published factory information, unnecessary repairs may be performed to resolve problems for which repairs have already been published.

Here’s a TSB that describes a condition with 2006-2009 Buick Lucerne front doors that will not open and/or unlock.


Some customers may comment that the front driver or passenger doors won’t open and/or that the door locks are inoperative. This condition may be caused by a binding door lock rod grommet. This binding condition may prevent the lock rod from actuating the latch.

Service Information

Always refer to ALLDATA Collision for safety procedures, identification of material types, recommended refinish materials, and removal and installation procedures. Always refer to the vehicle manufacturer for questions relating to applicable or non-applicable warranty repair information.

Service Procedure

A revised lock rod grommet has been developed to correct this condition. Use the following steps to replace the grommet and verify the alignment and function of the lock and related components.

IMPORTANT: Do not replace the door latch.

1. Remove the front door trim panel. Refer to Front Side Door Trim Panel Replacement in SI.

2. Locate the lock rod grommet in the door inner panel (Figure 1). Remove the original grommet and install the revised grommet (Figure 2).

3. Check all of the lock rods and cables. Verify that the components are attached to all of the guide clips. Ensure that all of the anti-rattle pads are in position and that all of the cables are properly routed.

4. Reinstall the door trim panel. Refer to Front Side Door Trim Panel Replacement in the SI.

5. Verify the function of the door locks, the inside door handle and the outside door handle.

6. If further diagnosis is required, refer to Symptoms – Vehicle Access in Vehicle Access in the Body Systems section of the SI.

Dan Espersen is the ALLDATA Collision Program Manager. He’s a Gold Pin Member of the Collision Industry Conference (CIC) and holds an AA Degree in Automotive Technology. He has 17 years of experience in the collision industry and 17 years of experience in the automotive industry.

© 2009 ALLDATA LLC. All rights reserved. All technical information, images and specifications are from ALLDATA Collision. ALLDATA is a registered trademark of ALLDATA LLC. All other marks are the property of their respective holders.

Buick and Lucerne are registered trademark names and model designations of General Motors Corporation. All trademark names and model designations are being used solely for reference and application purposes.

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