Service Update 17419 Transmission Rough Upshifts – 2018 Chevrolet Silverado & GMC Sierra
NHTSA ID Number: 10135135 Manufacturer Communication Number: 17419 (Bulletin 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). 2 Affected Products Vehicles MAKE MODEL YEAR CHEVROLET SILVERADO 2500 … Read more