Impco: some vehicles with compressed natural gas (CNG) system were built incorrectly with the engine...
Chevrolet technical service bulletin ER-14231 for 2015 Chevrolet Silverado HD and 2015 GMC Sierra HD.
- Bulletin number
- ER-14231
- Component
- Engine
- Summary
- Impco: some vehicles with compressed natural gas (cng) system were built incorrectly with the engine control module (ECM) calibration and would need to have ECM reprogrammed. Model 2015 silverado hd, sierra hd.
Vehicles covered
- Chevrolet Silverado HD 2015 2015
- GMC Sierra HD 2015 2015
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