NHTSA recall 87V121000
Service brakes, air › Drum › Chamber
Chevrolet B6P042 and 1 more
Reported Aug 3, 19877,870 vehicles affectedGENERAL MOTORS CORP.Built Oct 1, 1982 – Jun 1, 1987
The defect
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.
The risk
Brackets can break, resulting in loss of braking abilityat that front wheel, and possibly restricted steering, which could lead to avehicle crash without prior warning.
The remedy
As necessary, install new reinforced front brake chamber mounting brackets and install a front brake limiting valve on vehicles without one.