Interchange Part Number: GMC new old stock NIB OEM genuine GM Sprint Pontiac Buick
OE/OEM Part Number: cheyenne scottsdale suburban blazer jimmy 4x4 4wd C20 CK
Manufacturer Warranty: None
Manufacturer Part Number: 340427 340428 Chevrolet 76 el camino 1974 1975 1976 1977 SS
Superseded Part Number: Oldsmobile Omega Skyhawk Ventura GTO Apollo X F A body
Vintage Part: Yes
New old stock GM part# 340427 superceded by 340428 'switch, A/C Vac & Elect.' for Chevrolet: 74-77 CK123 Pickup, Suburban, Blazer, Jimmy - 1974-75 A,F,X Body, also shows up in GMC Sprint books and Olds/Buick books for 1975 X Body, probably some Pontiac uses too, but we did not chase those down. This is the switch on the back of the heater control for cars/trucks with factory air conditioning (not the switch on the dash). Comes in the original GM box.
