NHTSA Campaign 86V086000

SERVICE BRAKES, HYDRAULIC:FLUID

Issued by GENERAL MOTORS CORP. · Reported Jul 7, 1986 · 4,299 vehicles affected

What's wrong

SEVERE BRAKE CHATTER MAY CAUSE THE BRAKE CHAMBER MOUNTING BRACKETS ON EITHER SIDE TO DEVELOP CRACKS IN THE WELD AREA WHERE THE S-CAM SHAFT TUBE ATTACHES TO THE CHAMBER SUPPORT SECTION. CONSEQUENCE OF DEFECT: BRACKETS CAN BREAK, RESULTING IN LOSS OF BRAKING ABILITY AT THE FRONT WHEEL, AND POSSIBLY RESTRICT STEERING, WHICH COULD LEAD TO A VEHICLE CRASH WITHOUT PRIOR WARNING.

Remedy

AS NECESSARY, REPLACE FRONT BRAKE CHAMBER MOUNTING BRACKETS AND INSTALL A FRONT BRAKE LIMITING VALVE.

Vehicles affected by this recall

Make Model Year Units
CHEVROLET B6P042 1983 4,299
CHEVROLET B6P042 1984 4,299
CHEVROLET B6P042 1985 4,299
CHEVROLET B6P042 1986 4,299
GMC B6P042 1983 4,299
GMC B6P042 1984 4,299
GMC B6P042 1985 4,299
GMC B6P042 1986 4,299

Source: NHTSA Campaign 86V086000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.