Service bulletin 15411

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10089968
Published by NHTSA	2017-01-31
Manufacturer's number	15411
Manufacturer's date	2015-06-26
NHTSA component	ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM

NHTSA's summary

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.

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Wiring and fuses

Vehicles listed
CHEVROLET SILVERADO 1500	2015 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 1500	2015 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
14V265000	2014-05-20. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
PIT5311F	2020-08-10. Service bulletin. 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.
100089005G	2019-05-13. Service bulletin. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
100089005H	2019-03-18. Service bulletin. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
PIP5335B	2018-08-06. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Codes P0340 and P0341 setting at times. Technician should use normal published Service Information diagnostics. If normal Service Information diagnostics does not isolate the concern, inspect for corrosion in connector X154 located on the front cover next to the vacuum pump.
PIT5391	2018-06-04. Service bulletin. 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.
18NA079	2018-05-21. Service bulletin. 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.
10-00-89-005E	2018-05-21. Service bulletin. This warranty administration bulletin adds the 2016 model year to a communication which provides dealership personnel revised wiring repair labor operations and required additional information.
13-00-89-008A	2018-05-07. Service bulletin. This informational bulletin communicates GM wiring repair strategy information.
14725	2018-04-23. Service bulletin. 14725 - Service Update. Tie strap the ?Main? and ?BCM? branches of the body harness (near the front of dash pass-through inside the vehicle) together to prevent them from coming in contact with park brake bracket on certain 2014 and 2015 model year Chevrolet Silverado and GMC Sierra vehicles. These vehicles may have exposed body harness wires in close proximity to the parking brake bracket at the front dash pass-through inside the vehicle. The exposed body harness wires can rub against or be pinched by the brake bracket. While there is no evidence of this happening in customer vehicles, if the wires were to be sufficiently damaged from rubbing against or being pinched by the brake bracket, certain electrical systems could be affected. For example, sufficient damage to the wires could result in the loss of various exterior lights, wipers, the driver?s airbag telltale light, throttle control, defog controls, or trailer brake controls. In addition, while there is no evidence of any stalls resulting from this condition, it is possible that if the run/crank wire was sufficiently damaged, it could result in an engine stall. Depending on which circuit is damaged, a telltale or DIC message may be displayed alerting the customer that an issue exists.
100089005D	2017-12-22. Service bulletin. This warranty informational bulletin advised the technician that when performing a wiring repair, more information is required.