Service bulletins for the 2019 GMC Sierra
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
2009 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Hybrid and electric drive are shown. Show all
| 21NA228 | 2022-06-21. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:CHARGING:MODULE:ONBOARD (OBCM). This bulletin provides a procedure to program the BCM to correct the customers concern of RKE idle Time-out. |
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| N212346580-01 | 2022-03-16. Service bulletin. EQUIPMENT:ELECTRICAL:ENGINE BLOCK HEATER; ELECTRICAL SYSTEM:PROPULSION SYSTEM; ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. Customer Satisfaction Program - certain vehicles equipped with the Duramax diesel 6.6 liter engine and the optional engine-block heater cord, may have a condition in which the block heater cable function was disabled. Dealers will replace the engine block heater and cord. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.