4 1985 87 VACUUM POWER BOOSTER CHART V A M TRUCK I PRODUCTION SERVICE V DIV USAGE COL NO 18009730 18009730 CT M1 W JB3 1 9 1985 87 M POWER BOOSTER CHART A A V GROUP 1 SERVICE POWERHEAD BOOSTER 4 901 18009730 AIR VALVE PLUNGER VALVE 4 918 18012257 A BOOT KIT 4 659 18012140 V PISTON KIT 4 922 18014014 PISTON ROD KIT 4 924 05469384 POWERHEAD REPAIR KIT 4 898 18014481 VALVE GROMMET 4 955 18003614 I f I 1991 GENERAL MOTORS SERVICE PARTS OPERAT ONS LT TRUCK 52M l L 1 91 4 91 4 901