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GMC TSB #PI1029
2014 GMC Sierra 1500
TSB Document:
Affected Component: VEHICLE SPEED CONTROL:ACCELERATOR PEDAL
- Summary
- This preliminary information bulletin provides a procedure to reprogram the ECM/TCM due to upshifts that clunk when the driver lifts off the accelerator pedal at the beginning of the shift or about firm downshifts at lower engine speeds.
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