1986 HEATER MODULE GROUP DESCRIPTION OTY 1 2 3 4 5 8 845 VALVE W SEAL SHUT OFF 1 3039425 3039425 8 858 VALVE W SEAL TEMP 1 3033514 9 786 VALVE W SEAL VENT RH 1 3042884 3042884 8 858 VALVE W SEAL VENT CTR 1 3035511 3035511 9 262 1NASHER 187 FELT E5 DIA BY 25 TH 1 3020192 8 855 WIRE GRD 1 12016624 12016624 j 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17W T 6 91 8 33 8 845