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Mod | | | Forums66 Topics128,014 Posts1,055,324 Members48,419 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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| | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Yes, you are correct for GMC. I think it is also possible for GMC trucks to have 6v positive and/or 12v negative as factory options up to 1957 (and maybe 1958). There's GMC literature at this website that describes 6v and 12v standard and optional equipment for different sized GMC trucks. Tim | | |
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