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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 484 (Automatic Transaxle Diagnosis, Service & Repair - 4T65-E) >> Diagnostic Information and Procedures >> Road Test Procedure >> Manual 4-1 Downshift

Manual 4-1 Downshift

WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. 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 km/h (40 mph).
  3. Release the throttle while moving the gear selector to FIRST.
  4. Verify the following:
    • The TCC releases
    • The transmission downshifts immediately to SECOND Gear.
    • The engine slows the vehicle.
    • The transmission downshifts to FIRST gear at the calibrated speed, typically 48-64 km/h (30-40 mph).
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