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Service bulletins for the 2015 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.

3109 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Wiring and fuses are shown. Show all

Bulletins, newest first
154112017-01-31. Service bulletin. ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM. 15411 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO INSTALL FUSES AND RELAYS AS REQUIRED IN THE UNDERHOOD ELECTRICAL CENTER (UEC) ON CERTAIN 2015 MODEL YEAR CHEVROLET SILVERADO AND GMC SIERRA VEHICLES EQUIPPED WITH AN ACCESSORY-WIRING-JUNCTION-BLOCK (RPO 9L7). THESE VEHICLES MAY HAVE MISSING FUSES AND RELAYS. THE CUSTOMER MAY NOTICE THAT THE AUXILIARY SWITCHES ARE INOPERATIVE AFTER THE FUNCTION IS ADDED TO THE VEHICLE.
PIT5311B2016-09-21. Service bulletin. ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL; ELECTRICAL SYSTEM:WIRING. 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 FROM GENERAL MOTORS CUSTOMER CARE AND AFTERSALES ALONG WITH THE TRAILER'S 7-WAY CONNECTOR PLUG.
SB-140562016-09-21. Service bulletin. ELECTRICAL SYSTEM:WIRING; SERVICE BRAKES, ELECTRIC. 14056 - MESSAGE NO BULLETIN. CERTAIN VEHICLES, EQUIPPED WITH THE TRAILERING PACKAGE (RPO Z82 WITHOUT RPO JL1), WERE SHIPPED TO DEALERS WITHOUT THE ELECTRIC BRAKE CONTROLLER WIRE HARNESS. THE MISSING HARNESSES ARE BEING SHIPPED TO DEALERS FROM THE WARRANTY PARTS CENTER (WPC) FOR VEHICLES IN DEALER INVENTORY. THIS SHIPMENT WILL BEGIN MARCH 1, 2014, VIA UPS 3-DAY SHIPPING. IF A VEHICLE ASSIGNED TO YOU HAS BEEN SOLD OR DEALER TRADED, PLEASE MAKE ARRANGEMENTS TO PROVIDE THE CUSTOMER OR DEALER WITH THE HARNESS. GM WILL MAIL THE HARNESS TO CUSTOMERS OF RECORD.
PIP-5198-B2016-08-13. Service bulletin. ELECTRICAL SYSTEM:WIRING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. THIS PRELIMINARY INFORMATION COMMUNICATION ADVISES THE TECHNICIAN ON THE STEPS FOR DIAGNOSING THE CONCERN. THE VEHICLE MAY HAVE WARNING LAMPS AND/OR MIL ILLUMINATED WITH A DIESEL EXHAUST FLUID (DEF) MESSAGE DISPLAYED ON THE CLUSTER. WIRING HARNESS REPAIR INSTRUCTIONS ARE PROVIDED.
SB-140342016-05-23. Service bulletin. EQUIPMENT:ELECTRICAL; ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. 14034 - SERVICE UPDATE (STOP DELIVERY). EFFECTIVE IMMEDIATELY, STOP THE DELIVERY OF CERTAIN VEHICLES. ALL VEHICLES THAT ARE IN DEALER INVENTORY AND LISTED MUST BE HELD AND NOT DELIVERED TO CUSTOMERS, DEALER TRADED, OR USED FOR DEMONSTRATION PURPOSES UNTIL FURTHER INSTRUCTIONS ARE RECEIVED. INSTRUCTIONS FOR RELEASING THE INVOLVED VEHICLES FROM THIS STOP DELIVERY WILL BE PROVIDED IN THE NEAR FUTURE.
SB-0000184936-A2016-03-31. Service bulletin. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
SBU-153962016-02-05. Service bulletin. ELECTRICAL SYSTEM:WIRING. CHEVROLET/GMC/CADILLAC: ON CERTAIN SUVS/TRUCKS, SERVICE PROCEDURE PROVIDED ON INSTALLING CORRECT TEMPERATURE SENSOR WIRING HARNESS FOR TRANSMISSION DUE TO PREVIOUS WIRING HARNESS WAS UNAPPROVED. MODEL 2015 SIERRA, YUKON, YUKON XL, ESCALADE, ESCALADE ESV, SILVERADO. *PE
141542015-08-06. Service bulletin. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. CHEVROLET 2015 CHEVROLET SILVERADO 2500 HD, 2015 GMC SIERRA 2500 HD, EQUIPPED WITH 220 AMP GENERATOR RPO KW5: INFORMATION REGARDING 220 AMP GENERATOR FUSE BLOCK CORROSION. *LJ
SBU-141542015-04-10. Service bulletin. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. GMC/CHEVROLET: DUE TO ENDS OF FUSE BEING CORRODED, A RESISTANCE BUILD UP FAILS TO ALLOW CURRENT TO FLOW THROUGH FUSE, CAUSING GENERATOR NOT TO CHARGE BATTERY. MODEL 2015 SILVERADO 2500, SIERRA 2500. *PE
PIT-53112014-11-08. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. GMC/CHEVROLET: TRUCKS WITH INTEGRATED TRAILER BRAKE CONTROLLER (ITBC) MAY RECEIVED AN INTERMITTENT CHECK TRAILER WIRING, AND/OR SERVICE TRAILER BRAKE MESSAGE WITH DIAGNOSTIC TROUBLE CODE (DTC) C1114 AND HAVE ITBC CONNECTION CHECKED. MODEL 2014 SILVERADO 1500, SIERRA 1500, 2015 SILVERADO, SUBURBAN, TAHOE, SIERRA, YUKON MODELS. *PE
PI-51982014-10-11. Service bulletin. ELECTRICAL SYSTEM:WIRING. GMC/CHEVROLET: ON SOME TRUCKS, VARIOUS DIAGNOSTIC TROUBLE CODES (DTCS) ARE DISPLAYED AND INSTRUMENT PANEL CLUSTER (IPC) WARNING LAMPS AND/OR MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATING DIESEL EXHAUST FLUID (DEF) AND ENGINE MAY CRANK, NOT START AND RUNS ROUGH OR MISFIRE. MODEL 2015 SILVERADO, SIERRA. *PE UPDATED 11/12/14. *PE
PIT-52742014-07-31. Service bulletin. ELECTRICAL SYSTEM:WIRING; STRUCTURE:BODY:ROOF AND PILLARS. CHEVROLET/GMC: ON SOME TRUCKS, TROUBLE LOCATING THE TWO BLUNT CUT WIRES, FOR ROOF BEACON LIGHT, WHICH IS DIRECTLY ABOVE OVERHEAD CONSOLE AND TAPED TO HARNESS. MODEL 2014-2015 SILVERADO, SILVERADO 1500, SIERRA, SIERRA 1500. *PE

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