1997 Buick Regal Owner's Manual - Page 101

AUTOMATIC OVERDRIVE (0): position is This for normal driving. If you need more power for passing, and you're: Going less than 35 mph (56 kmh), push your accelerator pedal about halfway down. Going about 35 mph (56 kmk) or more, push the accelerator pedal all the way down. You'll shift down tothe next gear and have more power. THIRD (3): This position is also used for normal driving, but it offers more power and lower fuel economy than AUTOMATIC OVERDRIVE (@). Here are some times might choose THIRD(3) you instead of AUTOMATIC OVERDRIVE (0): When driving on hilly, winding roads. When towing a trailer, so there is less shifting between gears. When going down a steep hill. When driving in non-highway scenarios (i.e. city streets, etc.). NOTICE: I If yourseems notseemsto start up you goslowly, vehicle rather or if it toshift gears as faster, something may be wrong with a transaxle system sensor. If you drive very far thatway, your vehicle can be damaged. So, if this happens, have your vehicle serviced right away. Until then, you can use SECOND (2) when youare driving less than 35 mph (56 km/h) and AUTOMATIC OVERDRIVE (0) higherspeeds. for 2-25