Power Door Locks - Erratic Operation

CHEVROLET NUMBER: 87-T-81

SECTION: 10 - Body Section

DATE: March, 1987

SUBJECT: POWER DOOR LOCKS

MODELS: 1987 S/T TRUCKS

Several applications of the door lock switch may be required to unlock the PASSENGER (right hand) door on some 1987 S/T trucks. This condition is due to the door lock motor being located too far forward in the door. This condition can be eliminated by performing one of the following procedures:

1. ^ Remove the door inner trim panel.

Figure No. 1 - Door and Power Lock Motor Assembly:

^ Loosen the two door lock motor attachment bolts (Reference Figure No. 1).

^ Rotate the door lock motor rearward at the top (Reference Figure No. 1).

^ Check to ensure that there is clearance between the door lock motor and window run channel.

^ Tighten door lock motor attachment bolts to 9 N-m (80 lb.in).

^ Verify that interference condition is eliminated by operating door lock motor before attaching trim panel.

Figure No. 2 - Two Door Lock Motor Attaching Holes:

2. ^ If this condition still exists, elongate the two door lock motor attaching holes in the door panel 2 mm rearward as shown in Figure No. 2.

^ Move the door lock motor as far rearward as possible without contacting the window run channel. It is not necessary to rotate the motor rearward at the top with both holes elongated.

^ Reposition the door insulator and reinstall the door trim panel.

Labor Op T7350 should be used when performing this operation. Repair time is 0.4hrs.