Power assist: vacuumRecall 71V-140 · Chevrolet and GMC vehicles
GENERAL MOTORS CORP. recall 71V-140 covers 136,000 Chevrolet and GMC vehicles for a power assist: vacuum problem, reported to NHTSA on August 19, 1971.
Source: NHTSA recall 71V140000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
The fix
The remedy has not been described yet.
CHEVROLET CAMPAIGN NO 71-C-18.GMC CAMPAIGN NO 71-C-10.EXCE PT RPO H-22W/11,000 AXLE.POSSIBILITY THAT POWER BRAKE VACUU M CYLINDER (BOOSTER CAN)AND/OR ATTACHING BRACKETS MAY DEVELOPFATIGUE CRACKS.IF BRACKET CRACKS,COULD PERMIT EXCESSIVE MO VEMENT OF BRAKE CYLINDER ASSEMBLY.CONTINUEDOPERATION COULDCRACK FRONT HYDRAULIC BRAKE RESULTANT LOSS OF BRAKE FLUID IN PART OF DUAL BRAKING SYSTEM.BRAKING SYSTEM.(CORRECT BY REPL ACING COMPONENTSWHERE NECESSARY.)
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.