Condition Certain 2018 model year Chevrolet Silverado HD and GMC Sierra HD vehicles, equipped with 6.6L...
Chevrolet technical service bulletin 17419 for 2018 Chevrolet Silverado 1500 and 2018 GMC Sierra 1500.
- Bulletin number
- 17419
- Component
- Electrical system: software
- Summary
- Condition Certain 2018 model year Chevrolet Silverado HD and GMC Sierra HD 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. Correction Reprogram the transmission control module (TCM).
Owners of these vehicles have filed 148 complaints in the electrical category.
Vehicles covered
- Chevrolet Silverado 1500 2018 2018
- GMC Sierra 1500 2018 2018
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