LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1027 (Automatic Transmission - ALLISON (Troubleshooting)) >> Troubleshooting >> Road Test Procedure >> Manual Downshifts

Manual Downshifts

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Manual 5-3 Downshift

  1. Place the shift selector in DRIVE.
  2. Accelerate the vehicle to obtain FIFTH range.
  3. Release the throttle while moving the shift selector to THIRD.
  4. Verify the following conditions:
    • The TCC releases.
    • The transmission downshifts immediately to FOURTH range and then to THIRD range.
    • The engine slows the vehicle.

Manual 5-2 Downshift

  1. Place the shift selector in DRIVE.
  2. Accelerate the vehicle to obtain FIFTH range.
  3. Release the throttle while moving the shift selector to SECOND.
  4. Verify the following conditions:
    • The TCC releases.
    • The transmission downshifts immediately to FOURTH range, then to THIRD, then to SECOND.
    • The engine slows the vehicle.
scientia non olet · About LEMON Manuals