Hello,
I'm new to the forums with a big problem!
My Check engine light, service stabilitrak and traction control all came on and flashing at the same time
Here's the story. I was coming to a stop and applying the brake when I heard 4 chime dings and the check engine light, service stabilitrak and traction control lights all came on blinking
The Information display read "Service Stabilitrak Soon" and "Service Traction Control Soon" I also felt the transmission down shift twice.I came to a stop.
I tried to accelerated forward and i could barely move forward the display read "Engines power was reduced" I was able to get to speed. I pulled over and shut the van off for a few minutes.
The van started but, the engine light and stabilitrak was on. The van ran OK for awhile but, after a few miles the same thing happened.I was able to get home
The next day I took the van to the GMC dealer 4 days later they replaces the TPS sensor above the brake pedal.I picked the van up and with in 20 miles the same thing happened
I took the van back to the dealer 2 days later they sprayed dielectric on some connectors and said it was ready I picked the van up and drove another 20 miles and the problem reaccured
I'm very frustrated now I'm taking it back tomorrow. I let you all know what happens!
thanks for reading

 

Did you fix your issue? Am having same problem

 

Did you scan it and get the codes? What codes came up? Could be corrosion or a chafed wire for the throttle pedal.

 

also, it’s hard to start in the morning I have to turn the ignition switch hold it on the opposition and then triggered it for like five seconds until it starts. It only happens when it’s cold. Also transmission only is from 1st to 2nd and he gets stuck on third gear for a while until the shifts and until everything gets warmed up I didn’t transmission oil change and filter.

 

that person hasn't visited the forum in 5 years so I don't think they'll reply to you.
Please make a new thread that includes your vehicle info and all the troubleshooting you've tried.

 

2017 Chevy express 2500

traction control light, check engine light, service stabili track. Won’t shift out of first half the time. Stuck in second or third randomly.


I put in a new battery.

giving codes
P0700 (track control)
U0073 (control modual communication bus “A” off
U0101 (lost communication with Tcm
U0109 (lost communication with fuel pump control module)

can anyone help with this please I just bought this work van and I really need to get it working only has 70k miles on it I can’t believe it’s already screwing me

 

It's might be wiring or circuit board corrosion or chafing issue. Could also be some expensive module out. A visual inspection of all your wires and ground straps is where to start. You've got communication issues so their might be a chafed wire putting noise in the system and causing the failure to communicate. Be sure to take the engine cover off and look all around the engine, transmission, and wheel speed sensors.

Take a look at this. After that you're starting to get into some more advanced stuff. Find wire diagrams and check for power and ground to modules. Hard to do anything past that without some very advanced scan tools. There are a bunch of YouTube videos out there on this.

 

Mine is doing the same thing and I'm stuck a 1000 miles from home