1995 GMC Safari Owner's Manual - Page 225

To check transmission fluid hot: the vehicle warmed up by driving Get about 15 miles (24 km) when outside temperatures are above 50"F ( 10"C ) . If it's colder than 50°F (lO"C), drive the vehicle inTHIRD GEAR (D) until the engine temperature gage moves and then remains steady for ten minutes. Then follow the hot check procedures. To check transmission fluid cold: cold check is made after the vehicle A has been sitting for eighthours or more with the engine off and is used only as a reference. Let the engine run at idle for fiveminutes if outside temperatures are 50°F (10°C) or more. If it's colder than 50°F (lO"C), you may have to idle the enginelonger. Should the fluid level be low during a cold check, you must perform a hot check before adding fluid. This will give you a more accurate reading of the fluid level. To check 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). With your foot on the brake pedal, move the shift lever through each gear range, pausing for aboutthree seconds in each range. Then, position the shift lever in PARK (P). Let the enginerun at idle for three minutes or more. Then, without shutting off the engine, follow these steps: 1. Flip thehandle 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 backout again. 6- 19