1995 Pontiac Trans Sport Owner's Manual - Page 103

THIRD GEAR (D): If your automatic transaxle does not have OVERDRTVE (D), this position is for normal driving, at all speeds, in most street and highway situations. If your automatic transaxle has OVERDRIVE (@), THIRD (D) is like OVERDRIVE (@), you never go but into Overdrive. Here are some times you might choose THIRD (D) instead of OVERDRIVE (@): When driving on hilly, winding roads. When towing a trailer, so there is less shifting between gears. When going down a steep hill. SECOND GEAR (2): This position gives you more power but lower fuel economy.You can use SECOND (2) on hills. It can help controlyour speed asyou go down you steep mountain roads, but then would also want to use your brakes off and on. FIRST GEAR (1): This position gives you even more power (but lower fuel economy) than SECOND (2). You can use it on very steep hills, or in deep snow or mud. If the selector lever is put in FIRST (l), the transaxle won't shlft into first gear until the vehicle is going slowly enough. 2-32