The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Why don't I have a anti dieseling relay or switch?

chevydog66 · 10-15-2012, 10:57 PM

I have a 72 GMC with a/c and I am rewiring the whole truck with American Autowire and the a/c harness didn't come with the kit. So, I ordered a new a/c wire harness and it has a plug by the glove box for the anti dieseling relay or switch. I don't have any such thing in my truck nor have I ever heard of such a thing. Do I really need to buy one?

10-15-2012, 10:57 PM	#1
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Why don't I have a anti dieseling relay or switch? I have a 72 GMC with a/c and I am rewiring the whole truck with American Autowire and the a/c harness didn't come with the kit. So, I ordered a new a/c wire harness and it has a plug by the glove box for the anti dieseling relay or switch. I don't have any such thing in my truck nor have I ever heard of such a thing. Do I really need to buy one? __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up