Transport CanadaCritical
1983 GMC C7Transport Canada Recall #1987079
The official notice
Defect
SEVERE BRAKE CHATTER MAY CAUSE THE FRONT AXLE BRAKE CHAMBER MOUNTING BRACKETS TO DEVELOP CRACKS IN THE WELD AREA WHERE THE S-CAM TUBE ATTACHES TO THE CHAMBER SUPPORT SECTION. BRACKET FAILURE COULD RESULT IN LOSS OF FRONT WHEEL BRAKING AND POSSIBLE RESTRICTION IN STEERING CONTROL. THIS COULD CAUSE VEHICLE CRASH WITHOUT PRIOR WARNING.
Safety Risk
No risk description available.
Remedy
REINFORCED FRONT AXLE BRAKE CHAMBER MOUNTING BRACKETS WILL BE INSTALLED AND,IF NOT FITTED,A FRONT BRAKE LIMITING VALVE.
75 vehicles affectedMfr ref: 7A20/87025Updated June 10, 2026