Mine was the brake light switch. Get acdelco part online and replace it to see if it goes away for like 15 bucks. Don't get aftermarket, napa part failed within 6 or 8 months for me.

 

It may also be the steering wheel position sensor as there is a tsb on it regarding corrosion on the connector. I am currently dealing with the same thing and it is tripped as soon as I turn my wheel, but only in the heat of the day as you are experiencing.

Sent from my SAMSUNG-SM-G900A using Tapatalk

 

Cool, will run some tests to see if anything points to those parts. I just read that it could also be MAF sensor. Those 2 indicators seem to be a catch all for a lot of electrical issues.

 

Do you by any chance use the Range AFM Disable device?

 

I don't believe so, I do have a Diablo intune on there, but I don't recall selecting that option (if there was one)

 

OK, the range device is a stand alone device that plugs into the obd2 port that disables the AFM. It has been know to cause the ST/TC messages to appear if it is left plugged in for extended periods of time without removing it once on a while. But that isn't an issue for you with your tuner.

 

I hate these intermittent problems, its 95*f outside right now, went out to start the truck, no message, pump brakes, no message, turn steering wheel, no message. Drove around a bit and nothing. I'll keep yall posted, thanks for the input.

 

Did you change anything before this test to get rid of the message?

 

The message clears over night when I go to start up in the morning

 

Update***
Yesterday at 4pm, 96F, Started truck, pressed brakes: nothing, revved engine: nothing, Turned steering wheel about 15 degrees left: Stabilitrak/TC lights came on.
Looking like steering wheel position sensor. I read an old service update from GM that said they were having problems with the wire harness for this sensor, will look into that too.

 

Update***
The problem was the Steering position sensor. I bought a new one for $42 from Rydell, exact replacement with GM stamp. Install took about and hour and a half. 5 days now and still all good.

 

I am having the same problem. I have a 2011 Chevrolet Silverado 4.8L, been having this problem for about a week now. Doesn't happen every single time I drive, about 75% of the time. I will start driving with no alerts, and about 5-10 miles into the drive the Stabilitrak turns off and the Traction Control turns off and the brake light comes on. After a few minutes the brake light shuts off, but will come back on periodically, which disables the cruise control when it's on.

No check engine light, so no codes come up on a computer diagnostic.

Anyone else experience this and know the fix? I read several reviews of people suggesting to replace the Brake Light Switch, which I did, and that did not fix the problem. Any advise or suggestions on how to fix it would be much appreciated.

 

I never had brake light with mine, but that is a pretty good clue I would think..Others have had the TC/stabilitrak warning but with reduced power and it ended up being crank sensor or cam shaft sensor.