Warning lights came on yesterday when I started it up for the drive home. ABS and Brake lights are lit on the dash and the Service Brake System appears in the DIC. Anybody experienced this?

mine did the same thing, it was the brake control module

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)

</TABLE>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).

<TABLE width="100%" border=1><TBODY><TR><TH vAlign=bottom align=middle>DO THIS

</TH><TH vAlign=bottom align=middle>DON'T DO THIS

</TH></TR><TR><TD vAlign=center align=middle>Reprogram the EBCM with TIS version 7.5 Released July 26,2004 or newer.

</TD><TD vAlign=center align=middle>DO NOT replace the EBCM.

</TD></TR></TBODY></TABLE>

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).

So I wonder how much they'll hit me to reprogram the EBCM?

Nothing if your still in warranty... I get this many times w/mine, especially if its raining or snowing outside...dont really know why...

$95 diagnostic fee!!!! Took him a whopping 5 mins!!!

Under warranty for me too!