I I A A I A 7 TM08 0047 I 31 8 849 CONTROL HEATER STANDARD HEATER 1985 87 16045895 I V I 8 849 CONTROL HEATER HEAVY DUTY HEATER 1985 87 V 16045905 8 849 CONTROL HEATER STANDARD HEATER 1988 89 16073485 8 849 CONTROL HEATER HEAVY DUTY HEATE R 1988 89 V 16073495 8 849 CONTROL HEATER HEAVY DUTY HEATER 1990 91 A 16072265 J RPO DEFINITIONS I A I I Y A A A C36 HEATER AUXILIARY 1 C4 HEATER BASE 1 V 1 C42 HEATER DELUXE HEAVY DUTY A I K I 1 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52M 8 000 GROUP 1 1 mz 1 1 1 91