1997 GMC Sonoma Owner's Manual - Page 208

Front Towing Tow Limits -- 35 mph (56 k d h ) , 50 miles (80 km.) Vehicles with four-wheel-drive with the electronic transfer case option.must usea towing dolly underthe rear wheels when towing from the front. NOTICE: Do not tow with sling-type equipmentor fascidfog lamp damage will occur. Use wheel-lift or car-carrier equipment. Additional ramping may be required for car-carrier equipment. Use safety chains and wheel straps. Towing a vehicle over rough surfaces could damage avehicle. Damage can occur from vehicle to ground or vehicle to wheel-lift equipment. To help avoid damage, install a towing dolly and raise the vehicle until adequate clearance is obtained between the ground and/or wheel-lift equipment. Do not attach winch cables or J-hooks to suspension components when using car-carrier equipment. Always use T-hooks inserted in the T-hook slots. 5-10