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GMC TSB #17-NA-070
2017 GMC Sierra 2500
Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION
- This Technical bulletin provides information on new software to correct a hesitation, chuggle, fishbite or roughness that can be felt in gear ranges 3rd - 6th gear V8 mode, TCC locked, low RPMs (1200 &-1300 when tipping into throttle to load engine.
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