NOS 1978-1982 Chevy GMC Truck A/C Master Vacuum Switch – GM 470333 / 15-71518 (One Slot, Pickup 78 79 80 81)
About this item
Calling all classic Chevy and GMC truck restorers!
If you're working on a 1978-1982 pickup with factory air conditioning and your dash controls aren't routing air correctly, this NOS (New Old Stock) part might be your answer.
This is a genuine GM master vacuum switch, part numbers 470333 and 15-71518.
It mounts on the back of your A/C control head and manages the vacuum signals that direct airflow to the defrost, floor, or dash vents, and also controls the compressor clutch.
This is the REAL DEAL, manufactured by GM years ago but never installed.
It is NOT a reproduction.
05-22%20(1).JPG "RBLT 78-82 Chevy GMC Truck A/C HEATER CONTROL Nw Lens Blazer Pickup")
A crucial note: This switch has ONE adjustment slot.
It WILL NOT work if your original switch has TWO slots on the back.
Please check yours before ordering.
It's a vintage part made in the USA.
Sold by The Part Guy LLC, this is a rare find for anyone doing a correct restoration.
No returns, so read the description carefully.
Grab this NOS gem and keep your old truck's A/C working the way it should!
- Free shipping
- Free 30-day returns
How do you want your item?
Free 30-day returns
