1997 GMC Jimmy Owner's Manual - Page 275

Checking Transmission Fluid Cold A cold check is made after the vehicle hus been sitting for eight hoursor Inore with the engine off and is l w d only as a reference. Let the engine run rlt idle for five minutes if outside temperatures are 50°F ( 10°C) oI more. I f it's colder than 50°F ( IOOC), you m a y have t o idle the engine longer. Should the fluid level be low during a cold check, you rrlwst perfor111a h o t check before adding fluid. This will give you a more accurate reading of the fluid level. Checking the Fluid Hot or Cold Park your vehicle on a level place. Keep the engine running. With the parking brake applicd. place the shift le\;er in PARK (P). 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 shit't lever in PARK (P). Let the engine run at idle for three minutes or more. I . Flip the handle LIPand then pull out the dipstick and wipc i t with a clean rag or paper towel. 2. Push it back i n a l l the way, wait three seconds and then pull it back out again. 6-16