2008 Buick Lucerne Owner's Manual - Page 291

Then, without shutting off the engine, follow these steps: For the 3.8L V6 engine the transmission fluid dipstick top is a round loop with this symbol. See Engine Compartment Overview on page 5-12 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. 3.8L V6 Engine 3. Check both sides of the dipstick, and read the lower level. The fluid level must be in the cross-hatched area. 4. If the fluid level is in the acceptable range, push the dipstick back in all the way. 5-23