ramairetransam

iTrader: (18)

Adding a Procharger and the boost gauge and the piece that has some vac lines broke. What is it ad where to get it and number this piece

Spartan7

iTrader: (7)

HVAC check valve. That part number is wrong, the revised GM part # is 15733271. I just bought one recently from the dealer, it's very cheap. It will look slightly different, it will be clear instead of black, but it's the right part.

ramairetransam

iTrader: (18)

Thanks for the info I went to autozone and they actually had one in the help section for 4.50. Same exact thing. Gm must use it on many vehicles