2010 GMC Savana 2500 Cargo Owner's Manual - Page 287

3. With foot on the brake pedal, move the shift lever through each gear range, pausing for about three seconds in each range. When M is reached, move the selector from M1 through M3. Then, position the shift lever in P (Park). 4. Let the engine run at idle for two minutes or more. Then, without shutting Off the engine: The transmission dipstick is located near the center of the engine compartment and will be labeled with the graphic shown. A. COLD Range B. WARM Range C. HOT Range 3. Check both sides of the dipstick, and read the lower level. The fluid level must be in the COLD (A) range for a cold check, transmission temperature 27°C to 32°C (80°F to 90°F), between the COLD (A) and HOT (C) range for a WARM (B) check, 50°C to 60°C (122°F to 140°F) or in the HOT (C) cross-hatched range for a hot check, 71°C to 93°C (160°F to 200°F). Be sure to keep the dipstick pointed down to get an accurate reading. 4. If the fluid level is in the acceptable range, push the dipstick back in all the way; then flip the handle down to lock the dipstick in place. See Engine Compartment Overview on page 6-14 for more information on location. 1. Flip the handle up and then 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. 6-25