1998 Chevrolet Venture Owner's Manual - Page 149
1998 Chevrolet Venture Manual
Page 149 highlights
I AUTOMATIC OVERDRIW (D): This position is for normal driving.If you need more power for passing, and you're: Going less than 35 mph (55 km/h), push your accelerator pedalabout halfway down. Going about 35 mph (55 km/h) or more, push the accelerator all the way down. SECOND (2):This position gives you more power, but lower fuel economy. You can use SECOND (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 brakesoff and on. I NOTICE: Don't drive i n SECOND (2) for more than 25 miles ( 4 0km),or at speeds over 55 mph (90 km/h), or you can damage your transaxle. Use THIRD (3) or AUTOMATIC OVERDRIVE (D) as much as possible. Don't shift into SECOND ( 2 )unless you are going slower than 65 mph (105 km/h) or you can damage your engine. You'll shift down to the next gear and have more power. THIRD (3): This position is also usedfor normal driving, butit offers more power and lower fuel economy thanAUTOMATIC OVERDRIVE (D). Here are some timesyou might choose THIRD (3) instead of AUTOMATIC OVERDRIVE (D): When driving on hilly, winding roads. When towing a trailer(so there is less shifting between gears). When going down a steep hill. 2-32