2011 Buick Lucern Owner's Manual - Page 311

Wait at least 30 minutes before checking the transmission fluid level if you have been driving: . When outside temperatures are above 90°F (32°C). At high speed for quite a while. In heavy traffic - especially in hot weather. While pulling a trailer. 3. With your foot on the brake pedal, move the shift lever through each gear range, pausing for about three seconds in each range. Then, position the shift lever in P (Park). 4. Let the engine run at idle for three to five minutes. Then, without shutting off the engine, follow these steps: 1. For the 3.9L V6 engine, locate the transmission fluid dipstick top which is a round loop with this symbol. ... To get the right reading, the fluid should be at normal operating temperature, which is 180°F to 200°F (82°C to 93°C). Get the vehicle warmed up by driving about 15 miles (24 km) when outside temperatures are above 50°F (10°C). If it is colder than 50°F (10°C), you may have to drive longer. Checking the Fluid Level Prepare the vehicle as follows: 1. Park the vehicle on a level place. Keep the engine running. 2. With the parking brake applied, place the shift lever in P (Park). See Engine Compartment Overview on page 6 ‑ 14 for more information on location. 2. Pull out the dipstick and wipe it with a clean rag or paper towel. 3. Push it back in all the way, wait three seconds, and then pull it back out again. 6-25