Hello Guys,

Hope I can get some advise, tell me if this is something I should get checked or not.

I was driving a short distance (5 miles) in slush and snow in the evening, in 4wd. Overnight the temp went into the 20s. The message SERVICE BRAKE SYSTEM came on the next morning. It was not on the night before while I was driving.

After a few minutes of morning driving the message went off. The brakes never felt as if I needed service. Could it be slush and ice caught up someplace, and it melted away wen I started driving? The truck has less than 4,000 miles and no problems have surfaced.

Thanks,:ro)

Dom
05 2500HD D/A

There is an updated EBCM calibration to address a service brake system message that comes on intermittantly during initial start up with no dtcs set. Have the dealer reference bulletin #04-05-25-005A.

Advance SI Resolution - Antilock Brake System (ABS) Light On, Service Brake System Message on Driver Information Center (DIC) (Reprogram Electronic Brake Control Module (EBCM) #04-05-25-005A - (Sep 28, 2004)
Antilock Brake System (ABS) Light On, Service Brake System Message on Driver Information Center (DIC) (Reprogram Electronic Brake Control Module (EBCM))
2003-2005 Chevrolet Silverado 2500/3500 HD Series Pickups

2003-2005 GMC Sierra 2500/3500 HD Series Pickups

with Identification 2-inch Body Raise, HD Model (RPO HVY)

This bulletin is being revised to add correction information and additional model years. Please discard Advanced Service Information Bulletin Number 04-05-25-005 (Section 05 -- Brakes).

DO THIS
DON'T DO THIS

Reprogram the EBCM with TIS version 7.5 Released July 26,2004 or newer.
DO NOT replace the EBCM.


Condition
Some customers may comment that the ABS light, Service Brake System message comes on intermittently during initial start-up. The condition does not cause a DTC to be stored permanently.

Cause
The cause may be a timing issue related to the cranking/starting of the vehicles. It appears that the condition is more likely to occur on vehicles with diesel engines, though it can occur on vehicles with gasoline engines as well.

Correction
Reprogram the EBCM with TIS software version 7.5, released July 26,2004 or newer. Refer to Service Programming System (SPS) (SI Document ID #1451930).

Warranty Information
For vehicles repaired under warranty, use:

Labor Operation
Description
Labor Time

H2508*
Module, Electronic Brake Control Module - Reprogram
0.4 hr


*This labor operation number is for bulletin use ONLY.



GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
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Document ID# 1551943
2003 GMC Truck GMC K Sierra - 4WD