BRAKE PULSATION REPLACE SLIDE PINS

Model and Year: 1980-85 CITATION 1982-88 CAVALIER, CELEBRITY 1987-88 BERETTA, CORSICA

Chevrolet Dealer Service Bulletin 88-365-5 dated November, 1988 is being reissued to expand model application. All copies of the November bulletin should be discarded.

Some of the subject vehicles may experience a shudder or pulsation vibration when the service brake is applied. This is commonly referred to as "Brake Pulsation", and generally results from uneven wear of the brake rotors. Uneven rotor wear could be caused by high lateral slide forces of the brake calipers.

The caliper slide force may be reduced be replacing the current slide pins with new reduced diameter pins.

Whenever the caliper mounting bolts are serviced, the caliper mount bolt holes must be thoroughly cleaned and the area between the mount bolt bushings packed with silicone grease, P/N 12345579 or equivalent.

BRAKE PART NUMBER CARLINE APPLICATION NUMBER REQUIRED ------- ----------- ------ -------- Celebrity Heavy Duty 18016163 4

Celebrity Light Duty 18016164 4 (RPO JA1)

Citation All 18016164 4

Cavalier All 18016164 4

Corsica/ All 18016164 4 Beretta

Parts are currently available from GMSPO.

When replacing pins, refer tot he vehicle Service Manual for the following:

- Proper Rotor Refinishing - Proper Caliper to Knuckle Clearance - Proper Lug Nut Torque Sequence - Only Replace Pads as Necessary

IMPORTANT: IF BRAKE PADS ARE REPLACED, ONLY USE THE LATEST GM PADS WHICH WERE SPECIFICALLY DEVELOPED FOR THE VEHICLE BEING SERVICED.

Use applicable Labor Operation Number and Labor Time.

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.