Master Cylinder
Fits Rear Disc brakes; Exc. Active Brake Control (JL4); 7,700 lb Vacuum Power Brakesor Rear Drum brakes; Exc. Active Brake Control (JL4); 6,400 lb Vacuum Power Brakesor Exc. Active Brake Control (JL4); 7,000 LB Vacuum Power Brake (JF3)
Master Cylinder
Fits Rear Disc brakes; Exc. Active Brake Control (JL4); 7,700 lb Vacuum Power Brakesor Rear Drum brakes; Exc. Active Brake Control (JL4); 6,400 lb Vacuum Power Brakesor Exc. Active Brake Control (JL4); 7,000 LB Vacuum Power Brake (JF3)
Master Cylinder
w/BRAKE CODE JD9, GM BRAKE CODES ARE ON THE "SERVICE PARTS IDENTIFICATION" STICKER., WITH VACUUM BOOSTER, w/o ACTIVE BRAKE CONTROL [JL4], SUPPLIED w/o RESERVOIR