68 Camaro w C A C 3919581 1 16 40 9 273 68 Chevy exc C A C 3909009 1 13 90 68 Chevy w C A C 3940277 1 17 20 9 273 68 Chevelle exc C A C 3938542 1 13 90 68 69 Chevelle w C A C 3946900 1 18 30 Note 1 9 273 NOTE 1 When using 3946900 in place of 3938543 or 3909037 the center vacuum port No 12 must be sealed off 69 Chevelle exc C A C 3949980 1 14 30 69 Chevy Camaro w C A C 70 Nova w C A C 3929085 1 14 30 9 273 69 Chevy Camaro exc C A C 70 Nova exc C A C 3929078 1 13 25 69 70 Pass exc C A C 3937124 1 14 30 69 Pass w Auto Temp Control 7307601 1 49 55 9 273 69 70 Pass w C A C exc Auto Temp Cont 7308301 1 20 70 heater and A C control 9 273 70 Pass w Auto Temp Control 731 1681 1 54 55 9 273 70 Chevelle exc C A C 3963700 1 15 75 htr 70 Chevelle w C A C 3963740 1 20 10 htr and A C control 9 273 70 Camaro w C A C 3963787 1 20 70 9 273 70 Camaro exc C A C 3963768 1 16 15 8 850 VALVE ASSY VALVE UNIT SWITCH ASSY Heater Vacuum Actuating 66 Pass w Auto Temp Control 1222400 1 4 65 htr and A C sensor assy vac control 66 Pass w Auto Temp Ctontrol 1222401 1 4 25 htr and A C sensor assy vac servo 66 Pass vv Auto Temp Control 3895935 1 7 90 htr temp control vac 67 Pass Camaro w C A C 1222845 1 3 45 heater and A C sensor 67 68 Pass w Auto Temp Control 1222689 1 4 30 htr and A C sensor assy vac servo 67 68 Pass w Auto Temp Control 3902263 1 7 90 htr temp control vac 67 Camaro w C A C 1222688 1 3 45 heater and A C sensor vacuum control 68 Chevelle w C A C 7303171 1 3 45 heater and A C vacuum 68 Camaro w C A C 7304858 1 3 45 heater and A C vacuum 69 Chevelle w C A C 7309741 1 3 45 heater and A C vacuum 68 Pass w Auto Temp Control 7302767 1 htr and A C rotary vac 69 70 Pass w C A C 7308934 1 2 60 htr and A C vac control 9 ports top lever 69 70 Pass w Auto Temp Control 7309014 1 3 45 htr and A C sensor assy 68 Pass w C A C 7304857 1 4 35 heater and A C sensor control 69 Pass w Auto Temp 1222687 1 4 40 heater and A C sensor vacuum control 69 Pass w C A C 1222259 1 3 45 VALVE UNIT heater and C A C vacuulm control 68 69 Chevy w C A C 7303051 1 3 45 SWITCH ASSY heater and A C control vacuum 8 852 SWITCH ASSY ARM KNOB BRACKET BEZEL LENS LEVER SUPPORT SPRING COVER ESCUTCHEON FlLTER GUlDE lNSERT NUT CLlP CAP CLAMP RELAY ROLLER BUSHlNG W ASHER PlN PLATE SHAFT DlAL Heater NOTE See group 9 786 for vacuum valve details and part numbers 62 65 Chevy 3793768 1 2 65 blower w control cable 64 Chevelle w Air Cond 3849122 1 1 45 heater control 64 65 Chevelle exc C A C 66 67 Chevy exc C A C 3843245 1 1 30 heater 65 Chevelle w C A C 3860509 1 1 50 heater control 65 66 Pass exc C A C 3857416 1 1 20 heater control 65 66 Pass w C A C exc Auto Temp Cont 3857992 1 1 20 heater control 65 66 Pass w C A C 66 67 Clhevelle w C A C exc Auto Temp Cont 68 All w C A C exc Auto Temp Control 3870286 1 1 30 heater and C A C blower push button type w 2 term 66 Pass w Auto Temp Cont 3875847 1 3 45 blower 66 67 Chevy vv C A C 3870242 1 2 75 heater control 66 67 Chevelle exc C A C 3895923 1 1 30 heater control 68 69 Chevelle exc C A C 1 heater control 67 68 Pass Camaro exc C A C 3885148 1 1 30 heater control 67 Pass w Air Cond 1 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATlON P A 30A REV 2 71 8 27 8 849 8 852