NOS 78-82 Chevy GMC Truck A/C MASTER VACUUM SWITCH 470333 Pickup 78 79 80 81 Ful

1978-82 Chevy Truck. It has never been installed and is no longer in reproduction. 1978-79 Chevy Nova/X-Body. NOTE: These old A/C systems can be very complex. Purchasing this part will not necessarily resolve an issue you're having.