WenmarOpen by Wenmar Pro

Service bulletin 14154

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)
TypeService bulletin
NHTSA id10090203
Published by NHTSA2017-02-02
Manufacturer's number14154
Manufacturer's date2014-11-21
NHTSA componentELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES

NHTSA's summary

14154 - SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO RELOCATE THE SEPARATE 250 AMP FUSE INTO THE PRE-FUSE ASSEMBLY ON TOP OF THE VEHICLE BATTERY ON CERTAIN VEHICLES EQUIPPED WITH A 220 AMP GENERATOR (RPO KW5). THESE VEHICLES MAY, DUE TO CORROSION AT THE ENDS OF THE FUSE, EXPERIENCE A RESISTANCE BUILD-UP THAT DOES NOT ALLOW CURRENT TO FLOW THROUGH THE FUSE, RESULTING IN THE GENERATOR NOT BEING ABLE TO CHARGE THE VEHICLE BATTERY. THE BATTERY SYMBOL MAY APPEAR ON THE IP AND A MESSAGE IN THE DRIVER INFORMATION CENTER WILL SHOW “SERVICE BATTERY CHARGING SYSTEM.” AS THE BATTERY LOSES CHARGE, THE VEHICLE MAY STALL OR NOT BE ABLE TO START WHEN THE BATTERY GOES BELOW 11.3 VOLTS. DEPENDING ON THE STATE OF CHARGE OF THE BATTERY WHEN THIS OCCURS, THE VEHICLE MAY HAVE BETWEEN 50-85 MINUTES BEFORE ANY POTENTIAL STALL CONDITION.

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, 12-volt battery

Vehicles listed
CHEVROLET SILVERADO 25002015 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002015 (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.

Other bulletins for the same vehicles and component
20-NA-1322024-04-05. Service bulletin. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
PIT5074H2023-12-11. Service bulletin. J-35616-64B Terminal Test Probe / Replacement Terminal / Terminated Lead.
1408117001a2023-12-11. Service bulletin. Unable to Clear BCM DTCs After Completing Repair
20NA1322021-12-20. Service bulletin. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
18NA1612019-11-25. Service bulletin. This technical bulletin provides a procedure for testing the battery cables for voltage drop, Checking for a bad ground at g218, Inspecting for a short at the starter B+ to shield and testing for a faulty battery.
030603004Y2019-05-20. Service bulletin. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
030603004V2019-05-13. Service bulletin. This warranty administration bulletin provides policy information on the requirements for battery testing and warranty replacements.
110849001Z2019-04-22. Service bulletin. This bulletin provides information on the Transport Mode On Message Being Displayed in the Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message ON and OFF.
PIT5521A2019-04-08. Service bulletin. This preliminary information communicates a Diagnostic Tip for a Service Trailer Brake Message with DTC C111B C1112 C1113 C1114 advising to address any battery issues first before any in depth diagnostics are done.
110849001Y2019-03-25. Service bulletin. This technical bulletin provides information on Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing and the procedures to turn the Transport Mode message On and Off.