GM Service Manual Online
For 1990-2009 cars only

SERVICE MANUAL UPDATE STOPLAMP SWITCH REPLACEMENT

Models Affected: 1988 - 1989 LEMANS

When replacing the stoplamp switch on the 1988-89 Pontiac Le Mans, do not adjust push rod length to compensate for switch adjustment. The push rod must be set to its own specification. Refer to BOOSTER ASSEMBLY (Section 5D).

CAUTION:

IF THE PUSH ROD IS USED TO ADJUST THE STOPLAMP SWITCH, THE PUSH ROD COULD FALL OUT OF POSITION AND CAUSE LOSS OF BRAKING.

The stoplamp switch has internal adjusting steps. Adjustment of the switch must be made at the time of installation.

Remove or Disconnect

1. Battery negative (-) cable. 2. Trim panel. 3. Stoplamp switch plug connector. 4. Stoplamp switch. Turn switch 90 degrees and pull out of the bracket.

Install or Connect

1. Stoplamp switch through the bracket and turn 90 degrees to lock into position. 2. Stoplamp switch plug connector.

IMPORTANT: Do not adjust push rod length to compensate for stoplamp switch adjustment.

Adjust:

* Depress brake pedal and pull switch plunger to its maximum setting. * Release and pull up on the pedal. The stoplamp switch is now adjusted.

3. Trim panel. 4. Battery negative (-) cable.

Inspect

Stoplamp switch for proper operation. Adjust again if necessary.

Use applicable labor rate.

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.