GM Full-Size Trucks 1970-1979 Repair Guide

4-Wheel Drive


See Figure 1

Details for towing procedures are given in the Towing Four Wheel Drive Chart.

Remember that the power steering and power brakes will not have their power assist with the engine off. The only safe way to tow is with a tow bar. The steering column must be unlocked and the parking brake released. Attachments should be made to the frame and to the bumper or its brackets. Safety chains are also required.

When towing a full time four wheel drive manual transmission truck with all four wheels on the ground, the transfer case must be in Neutral and the transmission in high gear. There is no speed restriction.

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Fig. Fig. 1: Four wheel drive towing chart