INOPERATIVE DOOR LOCK/LATCH (REPLACE LOCK BOLT SPRING)

SUBJECT: INOPERATIVE DOOR LOCK/LATCH (REPLACE LOCK BOLT SPRING)

VEHICLES AFFECTED: 1991-92 G-VANS

CONDITION:

--------- Some owners of 1991 -92 G vans may comment that the drivers (LH), passenger (RH) and/or the side cargo (E24) door will not close properly. The latch will not engage the striker pin. This condition would more often occur on the (LH) driver's door, because of the extended duty cycle, but might also appear in the (RH) passenger or the (E24) side cargo door.

CAUSE:

----- The pull back spring, which is designed to open the door lock rotors, breaks at the rotor attaching joints. This condition can prevent the rotors from opening and engaging the door striker pin.

CORRECTION:

---------- A new more robust designed pull-back spring has been released for service. The new designed spring has been incorporated into the current production door locks to improve durability.

Vehicles manufactured prior to the 1993 model year which display the condition stated above can be corrected without removing the door lock assembly from the door.

SERVICE PROCEDURE

1. Insert the ends of a pair of needle nose pliers into the striker bolt engagement opening on the door (Figure 1), and remove any remnants of the old broken spring.

2. Insert the needle nose pliers into one of the vertical loops of the 15963050 striker bolt pull-back spring.

3. Insert the spring into the striker bolt engagement opening of the door and allow the free vertical loop of the pull-back spring to engage the lower lock rotor. With the spring attached to the lower rotor, attach the other end to the upper lock rotor (Figure 2).

4. Cycle door to assure security of the spring.

5. Repeat this procedure as necessary.

SERVICE PARTS INFORMATION

Part Number Description Qty/Veh. ----------- ----------- -------- 15963050 Spring-Lock Bolt 1 per dr.

WARRANTY INFORMATION

For vehicles repaired under warranty use:

Labor Op. Description Labor Time --------- ----------- ---------- B5060 Replace-Lock 0.2 hrs./per dr. Bolt Spring

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.