WenmarOpen by Wenmar Pro

Service bulletins for the 2023 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.

1426 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

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

Bulletins, newest first
N2324031902023-09-20. Service bulletin. ELECTRICAL SYSTEM. Service Update. Certain vehicles may have a condition where the customer experiences intermittent MILs and warnings, engine no starts / no restart from auto-stop, or irregular cooling fan operation. Dealers are to inspect, and if necessary, rethread the bolt hole and reinstall ground.
22-NA-1872023-09-15. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This informational bulletin advises the tech to inspect the transfer case motor electrical connectors for possible damage or corrosion that might be caused by a damage grommet inside the electrical connector.
23-NA-1432023-09-15. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of Radio Software Version Y169– Multiple Updates for IOK.
23-NA-1022023-09-15. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN; ELECTRICAL SYSTEM. This service bulletin provides a procedure to repair wiring to correct customer concerns of Driveability, Hesitation, Transmission Shifting Rough/Harsh, Malfunction Indicator Lamp (MIL) Illuminated.
23-NA-1382023-09-12. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This informational bulletin advises the tech the possible causes of the DTCs that set and how to maintenance the issue.
23-NA-1022023-09-09. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING. This service bulletin provides a procedure to repair wiring to correct customer concerns of Driveability, Hesitation, Transmission Shifting Rough/Harsh, Malfunction Indicator Lamp (MIL) Illuminated.
16-NA-2222023-09-08. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
N222375791-082023-09-06. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS; ELECTRICAL SYSTEM. Customer Satisfaction Program - Due to the industry-wide semiconductor shortage, the park assist feature is not functional on certain 2022 and 2023 model year vehicles, built beginning December 2, 2021. The affected vehicle owners should have been made aware of the condition at sale, and notified, that once parts are available, they would be eligible for a no additional cost retrofit to enable the feature. Dealers are to replace the park assist control module to restore the Park Assist feature. Note: some vehicles may also require reprogramming of the instrument cluster or the active safety control module.
23-NA-1182023-09-06. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Radio Software Version Y168 – Multiple Updates for IOK.
21-NA-2712023-09-06. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This bulletin advises the technician of a possible coolant hose that might be kinked causing the customer concern.
N222375791-072023-09-01. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS; ELECTRICAL SYSTEM. Customer Satisfaction Program - Due to the industry-wide semiconductor shortage, the park assist feature is not functional on certain vehicles, built beginning December 2, 2021. The affected vehicle owners should have been made aware of the condition at sale, and notified, that once parts are available, they would be eligible for a no additional cost retrofit to enable the feature. Dealers are to replace the park assist control module to restore the Park Assist feature. Note: some vehicles may also require reprogramming of the instrument cluster or the active safety control module.
18-NA-1032023-09-01. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. This service bulletin provides service information for customer concerns of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated that may be caused by gelling of fuel in cold temperatures.
N23-2409842023-08-25. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL. '(There may be future updates under this same release number.) Your vehicle keeps getting better. This software update includes the following if your vehicle is equipped: Refinements: - Updates made to the overall vehicle software update process. - Updates made to improve the Adaptive Cruise Control functionality. - Updates to improve the network connectivity during an emergency call. - A variety of other minor software updates to make your driving and in-vehicle experience better. Better Never Stops™
PIT60402023-08-21. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM. This Preliminary information communicates an issue where the aux switch "on" LED indicators do not illuminate within the aux switch if more than one aux switch is turned on. The aux switches do work regardless of how many are turned on, but the "on" LED indicator will only be illuminated in which ever aux switch is first pressed. Dealers are to reprogram the BCM to correct this concern.
N23-2398072023-08-14. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM:SOFTWARE. Your Vehicle keeps getting better. A vehicle software update is ready for you to install. This update includes the following if your vehicle is equipped: Refinements: •Improvements made to Google Built-in features (Google Assistant and Google Maps) •A variety of software improvements were made to make your in-vehicle driving experience better. Enjoy this update. Better Never Stops.
20-NA-0902023-08-03. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This informational bulletin provides a way for the technician to identify if the ECM has been modified.
09-06-04-026X2023-08-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
23-NA-1022023-07-27. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This service bulletin provides a procedure to repair wiring to correct customer concerns of Driveability, Hesitation, Transmission Shifting Rough/Harsh, Malfunction Indicator Lamp (MIL) Illuminated.
23-NA-0272023-07-26. Service bulletin. FUEL SYSTEM, DIESEL; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to test and replace the high-pressure fuel injector electrical connectors if found the cause of the MIL.
22-NA-1832023-07-26. Service bulletin. TIRES; ELECTRICAL SYSTEM; WHEELS. This service bulletin advises the technician of a different tire/rim option that can be used to correct a customer concern of poor ride quality at highway speeds.
N222375791-062023-07-25. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING; ELECTRICAL SYSTEM. Customer Satisfaction Program - Due to the industry-wide semiconductor shortage, the park assist feature is not functional on certain vehicles listed, built beginning December 2, 2021. The affected vehicle owners should have been made aware of the condition at sale, and notified, that once parts are available, they would be eligible for a no additional cost retrofit to enable the feature. Dealers are to replace the park assist control module to restore the Park Assist feature. Note: some vehicles may also require reprogramming of the instrument cluster or the active safety control module
23-NA-1252023-07-25. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. This service bulletin provides information for dealers/technicians on Over the Air (OTA) and In Market Enhancement (IME) FAQs.
23-NA-0552023-07-25. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This service bulletin provides information on the EL-52800 Diagnostic & Charge Battery Station (DCBS) – FAQs.
07-08-42-006S2023-07-25. Service bulletin. EXTERIOR LIGHTING; 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.
PIT60282023-07-17. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This Preliminary information communicates information on a blank or inoperative Instrument Panel Cluster with repair information on reprogramming the Cluster to correct the concern.

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