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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 812 (Automatic Transmission - 4L60-E/4L65-E (Service & Replacement)) >> Diagnostic Information and Procedures >> Road Test Procedure >> Manual Gear Range Selection >> Manual Third

Manual Third

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  1. With the vehicle stopped, move the gear selector to THIRD.
  2. Accelerate the vehicle to 64 km/h (40 mph).
  3. Verify the following:
    • The 1-2 shift occurs
    • The 2-3 shift occurs
    • There is no noticeable slip, noise or vibration