BRAKE LAMP SWITCH ADJUST REVISED PROCEDURE

Model and Year: 1988-89 C1, C2, C3, K1, K2, K3

TO: ALL CHEVROLET DEALERS

This bulletin cancels Dealer service Bulletin 88-65-5 (dated October, 1987) and provides revised brake lamp adjustment procedures. All copies of 88-65-5 should be discarded.

The brake lamp switch adjustment procedure has been revised for the 1988-1989 C/K models. Additional studies have shown that the procedure described below will provide for greater accuracy of adjustment. Whenever the brake lamp switch requires adjustment, the following procedure should be used:

. Start Engine . Pull Lever (A) Rearward (Towards back of vehicle). Against its Stop (Figure No. 1) . Depress Brake Pedal Fully While Holding Lever (A) Rearward . Release Lever and Brake Pedal.

IMPORTANT: The brake lamp switch harness should be connected prior to adjustment.

Other areas that may contribute to a misadjusted brake lamp switch are:

. A binding condition between the eyelet of the brake booster rod and its attachment pin at the pedal. . Pedal mounting bushings not properly lubricated.

For stop lamp switch adjustment on vehicles under warranty, use:

Labor Op: N2440 Labor Time: .2Hr

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.