1994 GMC Sonoma Owner's Manual - Page 173

Before towing, you should: 1. Set the parking brake firmly. 2. Place the automatic transmission in "P" (Park) or me manual transmission in the lowest gear ( 1 st gear). 3. Firmly attach the vehicle being towed to the tow vehicle. Refer to the hitch manufacturer's instructions. 4. Place the transfer case shift leverin "N" (Neutral). NOTICE: Removal of either propeller shaft is unnecessary. 5 . Release the parking brake only after the vehicle being towed is firmly attached to the tow vehicle. 6. Insert the ignition key into the ignition switch and turn it one notch forward of the LOCK position. This places the key into the OFF position, which unlocks the steering column while preventing battery drain. Unlocking the steering column will allow for proper movement of the front wheelshires during towing. NOTICE: You should exercise extra care whenever towing another vehicle. 4-37