2008 GMC Sierra service traction control light on

Ryankorn · January 18, 2016

Went to drive my truck today the service traction control light came on. At first I couldn't shift into drive. Turned truck off then back on lights still on but can shift. Only gear selector started blinking then when I did shift it disappeared. Tried driving a little lost acceleration for a few seconds and tires strarted hoping like if I wer on ice and traction control was on. Tried turning tc off no change in things. Disconnected battery for a little bit didn't help. Any ideas what else to check or do or what it could possibly be? I've heard it could be a few different things. Going to borrow a code reader tomorrow. Any help would be amazing

dalinspect · January 18, 2016

Sounds like you might want to service your traction control

Ryankorn · January 18, 2016

Well I've been told it could be air intake problems causing it, a few different seniors gone bad have no clue where to start

dalinspect · January 18, 2016

Could be a wheel speed sensor/ something to do with ABS. Good thing you are borrowing the reader as that is pretty much the only way to trace the exact issue.

Ryankorn · January 18, 2016

Will reply with codes tomorrow

Ryankorn · January 18, 2016

Code v0101

dalinspect · January 19, 2016

P0101 is MAF mass air flow sensor and U0101 is TCM transmission control module but not sure what v0101 is.

dalinspect · January 19, 2016

Are you sure its a v? If it's a U it sounds a bit like the things that happened to you. I'd start with the TCM.

dalinspect · January 19, 2016

Are you sure its a v? If it's a U it sounds a bit like the things that happened to you. I'd start with the TCM.

Transmission shifting issues

Ryankorn · January 19, 2016

Some of the codes I pulled up today like that one kept mentioning tcm. Could of been a u but not sure at the moment. When it comes to computer problems and stuff like this I'm not too familiar on yet

I can shift the vehicle but the gear indicator light either blinks or doesn't show up

dalinspect · January 19, 2016

I've changed some sensors myself in the past. I'm not a mechanic but just looked in the owners manual or googled to see where they are. If the TCM isn't too much money id buy one and change it to see what happens. If the TCM is some crazy price id take it to a garage just to be sure. Pay for a diagnosis and change the part yourself.

hsb1966 · January 28, 2016

Gm has a extended warranty for this system 120,000 miles make sure the dealership doesn't charge you for diagnostic. You can contact gm service center for help.