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Chevrolet TSB #17419 (Bulletin
2018 Chevrolet Silverado 2500
TSB Document:
Affected Component: POWER TRAIN
- Summary
- 17419-Service Update. Certain vehicles, equipped with 6.6L diesel engine (RPO L5P) and Allison transmission (RPO MW7), may have a condition in which the automatic transmission has rough upshifts. Dealers will reprogram the transmission control module (TCM).
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