Removed engine to put into another vehicle and I'm not using the AC. I'm not sure if this was the original or a replacement since I bought it used but I ran it before removing and it was in good working condition. I don't know the years but I'm guessing that it would fit any GM Vortec. This came out of a 5.7. Do your own homework. Save a trip to the junkyard. This is already removed. Cash only and must be picked up.