Operation CHARM: Car repair manuals for everyone.

Fluid - A/T: Testing and Inspection


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1. Start the engine and operate the vehicle for 15 minutes or until the transmission fluid reaches an operating temperature of 82-93°C (180-200°F).
2. Park the vehicle on a level surface. Apply the parking brake and block the wheels.
3. While the engine is idling and with your foot on the brake pedal, move the shift lever through each gear range, ending in Park.
4. Check the fluid level, color and condition (transmission fluid conditions are diagnosed by color). The fluid will be higher on the fluid level indicator when the transmission is cold. Conversely, the fluid level will drop when it is checked at operating temperature.
5. If it is necessary to add fluid, DEXRON III (R) Automatic Transmission Fluid is preferred. DEXRON IIE (R) is an acceptable substitute.