1994 GMC Jimmy Owner's Manual - Page 252

Wait at least 30 minutes before checking the transmission fluid level if you have been driving: When outside temperatures are above O F (32 " C). 90 At high speedfor quite a while. In heavy traffic -especially in hot weather. While pulling a trailer. To get the right reading, the fluid should be at normal operating temperature, whichis 180°F to 200°F (82°Cto 93°C). To check transmissionfluid hot: Get the vehicle warmedup by driving m when outside temperatures are above 50°F (10°C). about 15 miles (24 k ) If it's colder than50°F (1 OOC), drive the vehicle in "D" (3rd Gear) until the engine temperature gage moves and then remains steady ten minutes. for Then follow the hot check procedures. To check transmissionfluid cold: A cold checkis made after the vehicle has been sittingfor eight hours or more with the engine off and is used only as a reference. Let the engine run at idle for five minutes if outside temperatures are 50°F (10°C) or more. If it's colder than 50°F (lO"C), you may have to idle theengine longer. Should the fluid level be low during a cold check, you must perform a hot check before adding fluid.This will give youa more accurate reading the fluid level. of To check the fluid hot cold or Park your vehicle on a level place. With the parking brake applied, place the s,. ft lever in "P,' (Park). 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 "P', (Park). in Let the engine run at idle for three minutes or more. 6 - 16