POOR/NO INST. CLUSTER ILLUM. REMOVE INTERFERENCE FROM BULB

SUBJECT: POOR/NO INST. CLUSTER ILLUMINATION/UPPER LEFT CORNER (REMOVE INTERFERENCE BETWEEN BULB SOCKET AND I/P CLUSTER)

VEHICLES AFFECTED: 1992 C/K TRUCK

This bulletin is being revised to include Figures 1 and 2.

Owners of some 1992 C/K vehicles may notice the upper left corner of the instrument cluster dimly lit or totally unilluminated while driving with the lights on. The most likely cause, other than a burned out bulb, is an interference between the upper left instrument panel illumination bulb socket and the instrument panel male electrical connector housing. The condition can be remedied by removing only enough material from the instrument panel connector housing area to eliminate the interference.

SERVICE PROCEDURE:

1. Remove the lower steering column trim panel.

2. Remove the instrument panel bezel.

3. Remove the left air conditioning duct.

4. Remove the PRNDL cable at the steering column.

5. Inspect the instrument panel cluster connector housing for signs of contact with the cluster illumination bulb socket (Figure 1,2).

6. Remove the interference causing material from the Instrument Panel Cluster Connector Housing (Lower Left-Hand Corner) and test the cluster fit (Figure 1).

7. Install the instrument cluster.

8. Install the left air conditioning duct.

9. Install the PRNDL cable and adjust if necessary.

10. Install the instrument cluster bezel.

11. Install the lower steering column trim panel.

For vehicles repaired under warranty use:

Labor Operation: C2520

Labor Time: 0.5 Hours

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.