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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.

By type

By component

By trouble code

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
21NA1392021-08-09. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). This service bulletin provides a repair procedure to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P3055 Set.
21NA1212021-07-19. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides a procedure to inspect fuses F51DR and/or F52DR in the X51R right instrument panel fuse block when they should not be installed.
21NA0252021-07-19. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. This technical bulletin provides a procedure to replace the Fuel Power Module if found the cause of the customers concern.
20NA2182021-07-19. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides repair information to correct a customer concern of Possible Crank No Start or Extended Crank with DTC P12A6.
19NA1532021-07-19. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides a procedure to replace the torque converter and inspect the front pump and the TEHCM for metal.
19NA0762021-07-19. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides repair information to correct a customer concern of Blue or Black Screen and Service Rear Vision System Message on Radio Display Shifting into Reverse.
19NA0442021-07-19. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
18NA3612021-07-19. Service bulletin. FUEL SYSTEM, DIESEL; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to flush the cooler lines to validate if there is excessive debris in the fuel system caused by a failed part.
18NA2792021-07-19. Service bulletin. LATCHES/LOCKS/LINKAGES; ELECTRICAL SYSTEM. This service bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.
21NA1242021-07-06. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.
21NA1212021-07-06. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides a procedure to inspect fuses F51DR and/or F52DR in the X51R right instrument panel fuse block when they should not be installed.
21NA0252021-07-06. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to replace the Fuel Power Module if found the cause of the customers concern.
070842006P2021-06-07. Service bulletin. ELECTRICAL SYSTEM. This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer (Upfitter), and/or turn signals flash fast after factory box removed.
PIT58362021-05-17. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates and issue with the park assist off message or unwanted/false parking assist alerts and provide diagnostics tip for dealership to inspect the parking assist sensor/bezel mounting in the front and rear bumpers
PIT5677E2021-05-17. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This Preliminary information communicates the following issues and directs dealership to inspect the engine harness for shorting. Some customers may comment on any of the following concerns: - SES MIL - No Start - No Crank - Engine runs rough - Reduced engine power - Erratic speedo - Blown Fuse(s): F46UA, F47UA, F51UA, F78UA, F85UA, F86UA, F87UA, and/or F90UA When checking for DTC's any combination may be found: C15AA P001A P2B00 P2B01 P2B03 P2B96 P001B P003D P0107 P018C P01E5 P01E6 P01E7 P0237 P0340 P0341 P0355 P0365 P037C P03F0 P0521 P0522 P0532 P0616 P077C P07BF P0707 P1101 P112F P146D P159F p16A0 p16A2 P171B P2122 P26E5 P2812 P2814 P2B53 P2C05 P2C08 P2C09 P2C0C P2C0D P2C10 P2C12 P2C15 P2C16 P2C19 P305E P3084 P3089 P308E P3093 P3094 P3095 P3098 P30B0 P30B3 P30CF U0073 U0100 U0101 U0140 U0644 U0672
21NA0812021-05-10. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This technical bulletin provides a procedure to locate a possible short in the engine wiring harness.
PIE0612A2021-05-03. Service bulletin. ELECTRICAL SYSTEM. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a Dead Battery and/or Shift to Park Lamp Illuminated On Driver Information Center (DIC).
20NA1322021-05-03. Service bulletin. ELECTRICAL SYSTEM. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
PIT5745B2021-04-19. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates and issue with the memory seat module waking up the low speed GM lan bus and causing a battery draw.
PIT5639B2021-04-19. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates information to not make any repairs for momentary camera flicker when brake light, turn signal, or hazards are active with radio RPO IOR. GM engineering is working on a resolution for this concern. This PI will be deleted and a bulletin created when a repair is available.
PIE06092021-03-08. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT; ENGINE AND ENGINE COOLING. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to a noise heard from the engine compartment, loss of charging and/or reduced alternator output.
20NA1982021-03-01. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of seeing the trailer running lights shut off due to excessive load on the running lamp circuit.
20NA2122021-02-22. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of IPC Gauges Inoperative or Fluctuate, No Crank, Start then Stall.
N2023170602021-02-16. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM; EXTERIOR LIGHTING; WHEELS. Emissions Recall - General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles. The vehicle?s Engine Control Module (ECM) may have been reprogrammed during service with incorrect diagnostic software. If that occurred, the ECM may not accurately diagnose a fault in the auxiliary fuel tank system or the four wheel drive system. Further, the ECM may incorrectly report a fault or illuminate the malfunction indicator lamp (check engine light) on vehicles not equipped with these two systems. Dealers are to reprogram the ECM.
PIT5790A2021-02-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a concern where the radio will reboot when adjusting the volume intermittently and that engineering is investigating

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.