1994 GMC Suburban Owner's Manual - Page 79

- Going about 35 mph (56 k d h ) or more, push the accelerator all the way down. You'll shift down to the next gear and have more power. @ should not beused when towing a trailer, carrying a heavy load, driving on steep hills, or for off road driving. Select"D"(third gear) when operating the vehicle under any of these conditions. 0 D (Third Gear) This is like @, but you never go into Overdrive. You should use when towing a trailer, carrying a heavy load, drivingon steep hills, or for off-road driving. 0 2 (Second Gear) This position gives you more power but lower fuel economy. You can use "2" on hills. It can help control your speed as you go down steep mountain roads, but then you would also want to use your brakes off and on. If you manually select "2", the transmission will drive in second gear. You may use this featurefor reducing torque to the rear wheels when you are trying to start your vehicle from a stop on slippery road surfaces. 0 1 (First Gear) This position gives you even more power (but lower fuel economy) than "2." You can use it on very steep hills, or in deep snow or mud. If the selector leveris put in "1 ," the transmission won't shift into first gear until the vehicle is going slowly enough. NOTICE: If your rearwheels can't rotate, don'ttry todrive. This might happen if you were stuck in very deep sand or mud or were up against a solid object. You could damage your transmission. Also, if you stop when going uphill, don't hold your vehicle there with only the accelerator pedal. This could overheat and damage the transmission. Use your brakes or shift into Park to hold "P" your vehicle in position onhill. a 2-23