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Transmission Drive Cycle Test

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NOTE: Transmission drive cycle test must be followed exactly. Malfunctions have to occur 4 times consecutively for continuous memory codes P0731, P0732, P0733, P0781, P0782 and P0783 to set, and 5 times consecutively for continuous memory codes P0741 and P1744 to set.
  1. After repairing any engine-performance related DTCs, erase remaining transmission DTCs. Warm engine to normal operating temperature. Ensure transmission fluid level is correct.
  2. With gearshift lever in "D" position, accelerate from stop to 50 MPH. This allows transmission to shift into 4th gear. Hold speed for at least 15 seconds.
  3. Come to a full stop. Press TCS on gearshift lever. O/D OFF light (TCIL) should illuminate. Accelerate from stop to 40 MPH. This allows transmission to shift into 4th gear. Hold speed for at least 15 seconds (30 seconds above 4000 ft.). Press TCS and accelerate from 40 to 50 MPH. Hold speed and throttle position steady for at least 15 seconds (30 seconds above 4000 ft.).
  4. While maintaining speed with transmission in 4th gear, lightly depress brake pedal and release (to operate brakelights). Hold speed for at least an additional 5 seconds. Bring vehicle to stop for at least 20 seconds with gearshift lever in "D" position.
  5. Repeat steps  1- 4 at least 5 times. Perform RETRIEVING DIAGNOSTIC TROUBLE CODES (QUICK TEST)  and record any continuous memory codes.
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