Thread: GMC 4000 rear axle vacuum shift
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Old September 19th, 2020, 04:13 AM
Crosshairs6 Crosshairs6 is offline
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Join Date: Jun 2014
Location: Pollock, Louisiana
Truck: 1961 GMC 4000 (Fontaine flatbed) w/ 305B engine
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Default Re: GMC 4000 rear axle vacuum shift
LEWISMATKIN,
Thanks for the advice. I will be looking at the system again tomorrow. I do have mineral oil on hand.
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Own a 1961 GMC 4000 (Fontaine Flatbed) with a 305B engine
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