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Wrenchbender Ret · 02-14-2012, 11:36 PM

Probably not. GMC mostly used New Process trans. in those years. They are easily ID 'd as the NP has an aluminum cover.

02-14-2012, 11:36 PM	#2
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,229	Re: 4 speed transmission question Probably not. GMC mostly used New Process trans. in those years. They are easily ID 'd as the NP has an aluminum cover.