TM01 306 f RPO DEFINITIONS C60 AIR CONDITIONER FRONT MANUAL CONTROLS GT4 AXLE REAR 3 73 RATIO GU5 AXLE REAR 3 23 RATIO GU6 AXLE REAR 3 42 RATIO K01 FAN CLUTCH DRIVE LB4 ENG NE 4 3L 4 3Z V6 LU 2 ENGINE 4 3B 4 3B V6 HI OUTPUT L35 ENGINE 4 3L 4 3W CENTRAL PORT INJECTION V6 9O DEG 1992 GENERAL MOTORS SERVICE PARTS OPERATIONS LIGHT TRUCK 53M 1 8 92 1 11 1 000 GROUP