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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 6T30 (MH9) Or 6T40 (MH8) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> Road Test >> Part Throttle Step-In Downshifts

Part Throttle Step-In Downshifts

  1. Place the gear selector in the DRIVE position.
  2. Accelerate the vehicle at light throttle (5-15 percent) until 3rd gear is just achieved.
  3. Quickly increase throttle angle until commanded gear indicates that a downshift to 2nd gear is commanded.
  4. Verify that the transmission downshifts within 2 seconds of the throttle movement.
  5. Repeat steps  2 to  4 at higher speed to achieve 4th gear and then step in to command a 4th gear to 3rd gear downshift.
  6. Repeat steps  2 to  4 at higher speed to achieve 5th gear and then step in to command a 5th to 4th gear downshift.
  7. Repeat steps  2 to  4 at higher speed to achieve 6th gear and then step in to command a 6th gear to 5th gear downshift.
  8. Note any harsh, soft or delayed shifts or slipping. Note any noise or vibration.
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