Re: Wiring diagram for 64 GMC
The factory manuals should have the wiring diagrams.
Here is one I have saved that's listed for a 65 that may help.
Added another that I think goes up to 1963
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1961 GMC Suburban 305A Overdrive
1962 GMC Utility 305D
Last edited by Funky61; November 2nd, 2019 at 06:33 PM.
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