Buick 2001 Regal Owner's Manual page 276

Then, without shutting off the engine, follow these steps:
The automatic transaxle fluid dipstick handle is the
red loop located toward the rear of the engine.
See "Engine Compartment Overview" in the Index
for more information on location.
1. Pull out the dipstick and wipe it with a clean rag or
paper towel.
2. Push it back in all the way, wait three seconds and
then pull it back out again.
3. Check both sides of the dipstick, and read the lower
level. The fluid level must be in the cross
4. If the fluid level is in the acceptable range, push the
dipstick back in all the way.
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hatched area.
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