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Service bulletins for the 2018 Chevrolet Silverado

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.

1747 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
17NA3372018-05-21. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This informational bulletin provides information to the customer on the radio display "info pages" being blank and to make sure to select in the "active info pages" menu.
17NA2152018-05-21. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides a procedure to properly reprogram an onstar module to correct a condition of Red LED, No WiFi Operation, and/or Limited OnStar® Module Functionality After OnStar Module Replacement for Another Condition.
17NA2142018-05-21. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; STRUCTURE:FRAME AND MEMBERS. This technical bulletin provides repair information to correct customer concerns of OnStar, XM, GPS or antenna malfunction ? may set DTC B2462, B2470 or B125C - and/or water leak on headliner at sun visor or overhead console areas, possible battery drain concern.
090604026N2018-05-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. This informational bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2 9U.S. and Canada
070842006M2018-05-21. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:ELECTRICAL. This informational 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.
030603004W2018-05-21. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
18NA0392018-05-21. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM. This technical bulletin provides a procedure to reprogram the memory set module to correct a condition of Personalization Selections Intermittently Missing from Comfort and Convenience Menu due to a calibration concern.
18NA0372018-05-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM:SOFTWARE. This Bulletin provides ECM reprogramming information to Correct DTC P2101.
18NA0792018-05-21. Service bulletin. VISIBILITY:POWER WINDOW DEVICES AND CONTROLS; ELECTRICAL SYSTEM:WIRING; STRUCTURE:BODY:DOOR. This technical bulletin provides a procedure to replace the drivers front door window regulator motor and door wiring harness if water and/or corrosion is found in the connectors.
PIT5195D2018-05-21. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This Preliminary Information communication provides information to the technician about vehicles that the speedometer needle appears to be inaccurate. Dealer should advise the customer the specification for speedometer needle accuracy is +/- 2 MPH at any given speed when looking straight at the needle.
PIT5311D2018-05-21. Service bulletin. ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have an intermittent "Check Trailer Wiring" or "Service Trailer Brake" message on the Driver Information Center. Technician will inspect and clean the ground wire (normally white wire) connection on the trailer side of the 7-pin connector. Inspect that the wires inside the trailer side connector are clean and securely fastened. If the vehicle’s 7-way connector socket terminals are deformed or have excessive wear, it will be necessary to replace the truck side connector with part number 23404450.
PIP55622018-05-21. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This Preliminary information communicates to the dealer technicain a concern with the GPCM service parts(12687698 and 12671083) for 2017 – 2018 vehicles with the 6.6 L5P diesel.
PIT5282D2018-05-21. Service bulletin. ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. 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).
17337 (Bulletin2018-05-07. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. 17337 - Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles, equipped with a diesel engine. The engine control module in these vehicles may not properly diagnose a fault in the exhaust particulate matter sensor. Additionally, a subset of these vehicles, certain vehicles, may in rare instances exhibit a condition in which the engine surges up to 2,800 RPM during vehicle coast or vehicle braking. Dealers will program the engine control module, and transmission control module when applicable.
150603002H2018-04-23. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This informational bulletin provides information on approved warranty part numbers for original equipment batteries
140089004D2018-04-23. Service bulletin. ELECTRICAL SYSTEM:IGNITION; ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE. The information in this bulletin details the proper configurations for the ignition key, fob, key tags, key rings, key ring sizes and applying a QR code sticker or barcode sticker to a key fob.
17337 Phase 22018-04-02. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL. 17337 01 Phase 2 - Product Emission. General Motors has decided to conduct a Voluntary Emission Recall involving certain vehicles, equipped with a diesel engine. The engine control module in these vehicles may not properly diagnose a fault in the exhaust particulate matter sensor. Additionally, a subset of these vehicles, certain 2017 model year Chevrolet Silverado HD and GM Sierra HD vehicles, may in rare instances exhibit a condition in which the engine surges up to 2,800 RPM during vehicle coast or vehicle brakingProgram the engine control module, and transmission control module when applicable.
PIT5287D2018-03-12. Service bulletin. ELECTRICAL SYSTEM; SUSPENSION:FRONT:SHOCK ABSORBER. 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.
PIP4670E2018-03-12. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about a no start or another concern after swapping an Engine Control Module or other modules from one vehicle to another. The Global Architecture electrical system associated with these vehicles does not allow controller swaps between vehicles.
PIP55532018-03-12. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY. This Preliminary information communicatesThe vehicle may have an ses lamp with any of the following DTC P06DA, P06DB, P06DC, P06B6, P06B7, P250A, P0300, P0340, P0341, P0335, P0336, P0641, P0011, P0010, P2088, P2089, and/or P2230. Possible crank no start or a stall. possible wiring jumper harness chaffed at the bolt at the X154 connector on lower left side of the frount cover.
PIT5526B2018-02-21. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication advises the technician that the Technical Assistance Center TAC has a part restriction for the A15, Starter Generator (MGU). The dealer technician is advised to call the GMTechnical AssistanceCenter for further assistance.
PIT5546B2018-02-21. 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.
PIT5233D2018-02-21. Service bulletin. WHEELS; SEAT BELTS; ELECTRICAL SYSTEM; STEERING; SERVICE BRAKES, HYDRAULIC; ELECTRICAL SYSTEM:IGNITION. This Preliminary Information communication provides information to the technician about vehicles that may have hard or unable to rotate ignition key concern. When the concern is present the steering wheel will need to be rotated in either direction to alleviate the pressure between the steering column lock pin and lock plate. Please communicate to the customer this condition is a normal operating characteristic of their vehicle.
PIT5529A2018-01-16. Service bulletin. ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. This Preliminary Information communication provides information to the technician about vehicles that have Trailer connection not recognized or “Check Trailer wiring” or “Service Trailer Brake” message. Technician may find Diagnostic Trouble Codes C1112, C1113, C1114, C111B, U1556, and/or U1505. Technician will need to inspect the battery and Trailer Brake Power Module connector for corroded terminals and replace as necessary.
PIC5650D2018-01-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.

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