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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 87 (Automatic Transmission Diagnosis - ALLISON) >> Performance Tests >> Road Test >> Coasting Downshifts

Coasting Downshifts

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Place the gearshift lever in the Drive position.
  2. Accelerate the vehicle to 5th gear with the TCC applied.
  3. Release the throttle and lightly apply the brakes.
  4. Verify the TCC releases, and downshifts occur in normal sequence and the transmission returns to 1st gear before the vehicle comes to a stop.