1985 SPEEDO GEAR USAGE CHART S1 4 SPEED Continued f V A D A P TIRE SIZE AXLE TRANS T R P195 75R15 A pzomsm QM P205 75R15 P205 75R15OR P215 65R15 4 11 M73 NOTE 42 TRANS CODE GDA 57 TRANS CODE ZB T 1990 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52S t REV 10 90 4 83 4 450