1995 GMC Sonoma Owner's Manual - Page 65

I NOTICE: Damage to your transmission caused by shifting out of PARK (P) or NEUTRAL (N) with the engine racing isn't covered by your warranty. OVERDRIVE (0) This position is for normal driving. If you need more power for passing, and you're: - Going less than about 35 mph (56 kmdh), push your accelerator pedal about halfway down. Going about 35 mph (56 km/h) or more,push the accelerator all the way down. You'll shift down to the next gear and have more power. 0 OVERDRIVE (0) should not be used when towing a trailer, carrying a heavy load, driving on steep hills, or for off-road driving. Select DRIVE (D) when operating the vehicle under any of these conditions. DRIVE (D) - This is like 0, you never go into Overdrive. You but should use DRIVE (D) when towing a trailer, carrying a heavy load, driving on steep hills, or for off-road driving. 0 SECOND GEAR (2) - This position gives you more power but lower fuel economy. You can use SECOND GEAR (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 SECOND GEAR (2), the transmission will drive in second gear. You may use this feature for reducing torque to the rear wheels when you are trying to start your vehicle from a stop on slippery road surfaces. 2- 19