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Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different car >> Section 754 (Automatic Transaxle - 4T45-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Diagnostic Information and Procedures >> Road Test >> Part Throttle Detent Downshift

Part Throttle Detent Downshift

WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
  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%.
  4. Verify the following:
    • The TCC releases
    • The transmission downshifts immediately to THIRD gear
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