UNDERHOOD LAMP INOPERATIVE (NEW LAMP ASSEMBLY USED)

VEHICLES AFFECTED: 1988 "W" CAR

Condition: The underhood lamp (optional on Pontiac and Oldsmobile, standard on Buick) may be inoperative or may stay on all the time.

Cause: Inoperative switch or improper ground.

Repair: To repair this condition, replace the existing lamp with a new lamp, P/N 10106508, with an internal mercury switch, and rewire so that the existing underhood switch is not used. This change was made in production after VIN's JF224651 (Pontiac), JD322346 (Oldsmobile), and J1461350 (Buick).

1. Disconnect negative battery cable.

2. Disconnect underhood lamp connector (See Figure 1).

3. Remove existing underhood lamp, using a 1/8" drill to remove the pop rivets. Discard the lamp.

4. Open the conduit around wires for about one foot. Cut gray wire 8" back from connector.

5. Install ring terminal, P/N 12015105, on wire, and solder.

6. Enlarge the two mounting holes in the new underhood lamp to 3/16" by drilling.

7. Mount the underhood lamp to the hood using one sheet metal screw, P/N 22506732. Do Not Use A Substitute Screw.

8. Install the underhood lamp connector, then connect the ring terminal to the base of the lamp and the hood with a second sheet metal screw (See Figure 2). Reinstall conduit.

9. Remove the plunger assembly (striker and spring) from the existing underhood lamp switch by pulling up with pliers. Discard the plunger assembly.

NOTICE: IF THE COWL SCREEN NEEDS TO BE REMOVED IN THE FUTURE, THE SWITCH CAN BE REMOVED AND DISCARDED. PLUG THE HOLE WITH A 15MM BLACK HOLE PLUG.

10. Reconnect negative battery cable, and check lamp for proper operation. Lamp should come on when hood opens more than 25 degrees, and shut off at less than 25 degrees.

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.