REAR DOORS LOCKED (NEW LOCKING RODS)

VEHICLES AFFECTED: 1990 CHEVROLET LUMINA

Some 1990 Lumina sedans may have a rear door that once it is locked may be difficult to unlock or open. This condition may be due to interference of the inside locking rods. P/N 10155754 (right) and P/N 10155755 (left) are available to address this condition.

If this condition occurs, the following procedure may be used to unlock and open the door, and then repair the condition.

Procedure:

1. Grasp the rear door inside handle trim plate and pull inward to disengage from trim panel. This will expose the forward end of the inside locking rod.

2. While holding the inside, remote handle to the "Open" position, press the end of the inside locking rod upward and push forward to the "unlocked" position. The door may now be opened.

3. Remove the door trim panel and water deflector.

4. Using a 3/16" drill bit, drill out the lock module attaching rivets.

5. Disconnect the electrical connection to the power door lock actuator (if so equipped).

6. Remove the 3 screws holding the lock module at the rear surface of the door.

7. Disconnect the outside door handle to lock rod, remove the module from the door and place on a work bench.

8. Remove the inside door locking rod from the module by releasing it from the retaining clips, and replace this rod with new part P/N 10155754 (right) or P/N 10155755 (left).

INSTALL

1. The lock module to the door with the 3 screws on the door lock facing and torque to 7 N.m (62 in. lbs.).

2. Rivet the module to the inner panel using 3/16" x 1/4" rivets.

3. The outside door handle lock rod to the lock.

4. Wiring connector to the power actuator (if so equipped).

5. Operate the lock system to insure proper operation.

6. Reinstall the water deflector and door trim.

Use the most applicable Labour Operation and time from the Canadian Labour Time Guide.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those 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 a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.