4T40-E 1. Fluid level must be checked with transaxle temperature of at least 104 F (40 C). To obtain proper temperature, run engine at idle for 3-5 minutes. Shift through each gear range, holding in each range for 3 seconds. 2. Place gear selector in Park. Leave engine running. Raise and support vehicle. Place oil drain pan below oil check plug. Oil check plug is located in center of transaxle above pan rail, on torque converter side. See Fig. 3 . Remove oil check plug. 3. Oil level should be even with bottom of oil check plug hole. If fluid does not drain from hole, add fluid until fluid starts to pour from hole. Tighten oil check plug to specification. See TORQUE SPECIFICATIONS . Fig. 3: Locating Oil Check Plug (4T40-E) Courtesy of GENERAL MOTORS CORP. RECOMMENDED FLUIDS On all models, manufacturer recommends Dexron-III ATF. Fill transaxle with appropriate quantity. See FLUID CAPACITIES . CAUTION: The engine must be running when the transaxle fluid fill plug is removed, or excessive fluid loss will occur. Transmission fluid may be hot. Since the actual fluid level is unknown, stand clear when removing the fill plug. Have a container ready to capture any lost fluid. DO NOT turn the engine off with the fill plug removed, as you can be injured by hot transmission fluid being expelled out of the oil fill opening. NOTE: The 4T40-E is not equipped with a dipstick.