1997 GMC Savana Van Owner's Manual - Page 254

Checking the Fluid Hot or Cold Park your vehicle on a level place. Keep the engine running. With the parking brake applied, place the shift lever in PARK (P). a With your foot on the brake pedal, move the shift Then, without shuttingoff the engine, follow these steps: lever through each gear range, pausing for about three seconds ineach range. Then, position the shift lever in PARK (P). Let the engine run at idle for three minutes or more. 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 again. out 6-20