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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 First

Manual First

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  1. With the vehicle stopped, move the gear selector to FIRST.
  2. Accelerate the vehicle to 32 km/h (20 mph).
  3. Verify the following:
    • No upshifts occur
    • The TCC does not apply
    • There is no noticeable slip, noise, or vibration
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