Original 1978 GMC Truck Dealer Service Manual. This Manual covers the Light Duty Models [Series 1500 thru 3500, including Jimmy, "G" & "P" Models]. This is the Unit Repair [Overhaul] Manual. This is what the Dealerships used to service and repair the Components of your truck [the regular Service Manual covers removal and installation of Components and is not included]. It has information, illustrations, diagrams, specifications and procedures to maintain your Truck Components. Very useful and informative tool for the GMC Owner which was not available to the public. Good condition with normal wear and soiling from use in a Dealership [see photos].
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