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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.

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

Bulletins, newest first
PIE04992019-03-25. Service bulletin. ELECTRICAL SYSTEM:WIRING; FUEL SYSTEM, GASOLINE. This engineering informational bulletin is requesting information and document the exact location of the wire chafing by taking a photo of the flex fuel pigtail as it appears BEFORE repairs are made.
16NA3422019-03-25. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to check the rearview mirror coax connector for looseness by disconnecting and reconnecting the electrical connector and to correct the customers concern for the rearview mirror video screen displaying blue.
18NA3762019-03-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin provides service procedure information for dealers/technicians on Radio Software Version V509 Over-the-Air Update.
18NA3012019-03-25. Service bulletin. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS; SUSPENSION. This technical bulletin provides a procedure to install higher amp fuses to correct the axle actuator high amperage draw.
060847001N2019-03-25. Service bulletin. ELECTRICAL SYSTEM. This bulletin explains the labor operation numbers used for submitting warranty claims for module reprogramming and not when replacing a module.
18NA2172019-03-25. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides a procedure to locate and repair a possible short in the 5294 circuit and correct the customers concern.
18NA3762019-03-25. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. This bulletin provides service procedure information for dealers/technicians on Radio Software Version V509 Over-the-Air Update.
18NA3682019-03-25. Service bulletin. ELECTRICAL SYSTEM; PARKING BRAKE. This technical bulletin provides a procedure to reset the parking assist module if the parking assist message is on when delivered to the dealership.
100089005H2019-03-18. Service bulletin. ELECTRICAL SYSTEM:WIRING. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
PIT5326C2019-03-18. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about the Upfitters questions about installing aftermarket electrical accessories. Dealer should reference the latest version of General Motors Upfitter Integration Bulletin 115 for this information. It can be found at http://www.gmupfitter.com.
17NA2762019-03-18. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information on Loss of Phone Pairing or Favorites, Last Setting of Volume, Station, App, and Audio Settings Change When Vehicle Shuts Down in Demo Mode and that this is considered a normal characteristic of the vehicle in demo mode.
PIT56552019-03-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates that a customer may complain of when a Bluetooth call is received the ringing will be continuous for the rest of the drive cycle . It may be noted that this only seems to occur when using an Android device on OS 9.0. This may be caused by a software concern in the phone. The dealer is instructed that the phone manufacture is working on a software update to resolve the concern.
PIT5282E2019-03-11. Service bulletin. TRAILER HITCHES; ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician that a customer may request the factory Integrated Trailer Brake Control be bypassed and their aftermarket trailer brake controller be installed instead. Technician will need to gain access to the body harness. Install trailer brake controller harness General Motors part number 23184088 into Middle Bus Electrical Center (X61A).
PIT5287E2019-03-11. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician with the correct way to remove the front shock electrical connector terminals. Technician will need to slightly bend the end of the J-38125-12A release tool. There is a purple Terminal Position Assurance that will align itself in the release position when the release tool is inserted into the release hole. There is a metal locking tab on the terminal that will need to be pushed in before the terminal will pull out of the connector.
PIT5648A2019-03-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates an issue with a "Trailer Disconnected Check Connection" message being displayed on the DIC without a trailer ever being connected. Engineering is aware of the issue and working on a correction.
PIT5391E2019-03-11. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicles that have a no crank or a start and then immediate stall, Service Engine Soon Malfunction Indicator lamp may not be on when the ignition is in the run position. Technician may find Diagnostic Trouble Codes P0513 and or P262B may also be set. Technician will pulled the driver sill plate and inspect the wiring for damaged or corroded circuits. Technician will repair any damaged or corroded circuits.
PIT5630B2019-03-11. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates the possible setting of B101D-39 in the OnStar module and advises of byte info to retrieve while engineering completes further investigation.
PIT5307F2019-03-11. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that may have a service engine soon malfunction indicator lamp, antilock braking system malfunction indicator lamp, service suspension system message, misfire, hesitation, no crank, heater-vent-air conditioning inoperative. Technician may find F11UA, F104UA, F35UA, and or F60UA blown. Technician should inspect the engine harness near the vacuum pump pulley to be chafing. Technician will need to reroute the wire harness and repair and damaged wires.
PIT5546D2019-03-11. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates that water leaking into the headlamp assembly or headlamp assembly connections can cause an electrical short which will keep modules from shutting down causing a dead battery and a no crank condition, a crank no start, or unable to program the engine control module. Engine control module will set a diagnostic trouble code of P1682, or the engine will continue to run with the ignition off.
PIT56422018-12-17. Service bulletin. ELECTRICAL SYSTEM; SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER. This Preliminary information communicates and issue with the heated/vented seat switch indicators being inoperative or hard to see when the interior light dimmer switch is set to a very low/lowest position. Engineering is currently investigating the issue.
PIT5445C2018-12-17. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician of additional information when diagnosing a service driver assist message with a diagnostic trouble code B172E and or a B172F. The haptic seat motor has a pigtail lead coming off of it. In many cases the wiring pigtail near the haptic seat motor has broken and will require replacement.
PIT5594A2018-12-17. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a normal DIC message after learning keys/fobs which indicates the drivers memory position.
PIT56342018-12-17. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES, HYDRAULIC. This Preliminary information communicates and issue with a customer concern of a SES MIL, Reduced Engine Power, Service Brake System, and/or Speed Limited message, a lack of brake assist making the brake pedal hard and DTC P0606. These issues can be caused by a low voltage conditions, but the EBCM incorrectly sets a DTC P0606 for a Control Module Processor Performance error. If the SI diagnostics are followed for DTC P0606 it can lead to a misdiagnosis and an incorrect repair. Dealers are advised to inspect for a low voltage condition and follow SI diagnostics for DTC P0562 "System Voltage Low". Engineering is trying to determine next steps in the resolution of this issue. It will likely be an update to SI or a change to the EBCM Calibration or both.
PIT56392018-12-17. 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.
PIP56052018-12-17. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This Preliminary information communicates There maybe a concern of a DIC message saying Air Filter Life 0% replace now. The DIC message is triggered by a battery being disconnected and reconnected

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