Services Brake System light problem

[yankeeland]

I noticed when I drive at 65mph or higher on cruise control several lights come on. I see ABS, Emergency Brakes, and it displays "Services Brake System". This didn't always happen. Its been going on for 3 or 4 months now, also with two different tunes. I also noticed if I don't try to clear the code as soon as I stop the truck it goes alway. Any suggestions?

 

[The Neens]

Trippin suggested to reprogram the ABS module with a TECH II and enter 285/75/16 as the tire size...I think I mis-typed and told him 33" tires...I'll let you know what he recommends...

 

[McRat]

Here's what happens.

At roughly 35" dia speedo/tire correction, it freaks the ABS computer out.

You can program the ABS computer with a Tech2 (do a search, I wrote a tutorial), OR you can back off the speedo correction a bit. Go for 34" tires instead.

 

[yankeeland]

Will give it a shot. Thanks.

 

[redws6rocket]

you need to see if it set a dtc. my truck sets a c0055 code and there is a bulletin about checking the wiring to the vss which is in the transfer case. i have never really messed with mine as it has only done it twice on me.

 

[The Neens]

http://www.duramaxdiesels.com/forum/showthread.php?t=944