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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 4L60-E/4L65-E (Service & Replacement) >> Diagnostic Information and Procedures >> Electrical Function Check >> Manual 4-1 Downshift

Manual 4-1 Downshift

  1. Place the gear selector in the OVERDRIVE position.
  2. Accelerate the vehicle to 48 km/h (30 mph).
  3. Release the throttle while moving the gear selector to FIRST.
  4. Verify the following:
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