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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle, 4T65-E Diagnostics (Troubleshooting) >> Troubleshooting >> Road Test Procedure >> Part Throttle Detent Downshift

Part Throttle Detent Downshift

  1. Place the gear selector in the OVERDRIVE position.
  2. Accelerate the vehicle to 64-88 km/h (40-55 mph) in FOURTH gear.
  3. Quickly increase throttle angle to greater than 50 percent.
  4. Verify the following:
    • The TCC releases
    • The transmission downshifts immediately to THIRD gear
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