GMC 1994 Sonoma Owner's Manual page 191

When your vehicle is being towed, have the ignition key off. The steering
wheel should be clamped in a straight-ahead position with a clamping
device designed for towing service. Do not use the vehicle's steering
column lock for this. The transmission (either automatic or manual) should
be in "N" (Neutral) and the transfer case (either manual shift or electronic
shift), if you have one, should be in 2 HI. The parking brake should be
released.
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