P 1983 BRAKE SYSTEM USAGE CHART I S TRUCK VEHICLE SPECIFICATIONS BRAKE SYSTEM SPECIFICATIONS PAYLOAD RATING BASE BRAKES OPT BRAKES I OR MODEL WHEEL FIXED BRAKE MERCHANDISING BRAKE MERCHANDISING I NO BASE GVW RPO RPO RPO RPO S10516 A 100 1000 JM5 STD I S10603 108 1000 JB1 STD JM7 J50 310603 108 1000 JM7 J50 S10603 108 1500 JM5 STD A S10603 108 1625 JM5 STD S10653 123 1000 JM1 STD JM7 J50 3 S10653 123 1000 JM7 J50 S10653 123 1500 JM5 STD S10653 123 1625 JM5 STD S10803 118 1000 JB1 STD JM7 J50 S10803 118 1000 JM7 J50 S10803 118 1500 JM5 J50 STD S10803 118 1625 JM5 J50 STD FIXED GVW CAB CHASSIS S10803 118 4100 JB1 STD JM7 J50 I S10803 118 4100 JM7 J50 S10803 1 18 4600 JM5 STD 1983 BRAKE SYSTEM USAGE CHART I T TRUCK I I A VEHICLE SPECIFICATIONS BRAKE SYSTEM SPECIFICATIONS PAYLOAD RATING BASE BRAKES OPT BRAKES OR I I WHEEL FIXED BRAKE MERCHANDISING BRAKE MERCHANDISING A BASE GVW RPO RPO RPO RPO T10516 100 1000 JM5 STD l T10603 108 1000 JM7 STD T10603 108 1500 J M5 STD T10603 108 1625 JM 5 I STD T10653 123 1000 I JM7 STD T10653 123 1500 J M5 STD T10653 123 1625 J M5 STD I T10803 1 18 1000 JM7 STD T10803 1 18 1500 J M 5 STD T10803 118 1625 JM5 STD I FIXED GVW CAB CHASSIS T10803 118 4100 JB1 STD JM7 J50 T10803 118 4100 JM7 J50 A I T10803 1 18 4600 JM5 STD WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION LT TRUCK 52S REV 9 82 I BRAKE SYSTEM 1 4 000 G ROUP