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Home >> GMC >> 2011 >> Yukon Base, 5.3 3 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Automatic Transmission - 2ML70 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Road Test >> Part Throttle Downshift

Part Throttle Downshift

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  1. Place the gear selector in the DRIVE position.
  2. Accelerate the vehicle to 64-88 km/h (40-55 mph) in 4th gear.
  3. Quickly increase throttle angle to between 25-30 percent.
  4. Verify the transmission downshifts immediately.
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