Please help!!!

[saltgod]

I have a 17 with a 6.2. It's left me stranded two times. 4800 miles. Problem is when I turn the key on I get stabilitrac failure/ power steering failure/ trailer brake failure/ low washer fluid(it's full). I have abs light, CEL, traction control light on. The screen goes to back up camera (in park). Also turn signals in mirror will stay illumanted. It'll start run for 30 secs and sputter and die. Then it'll just turn over. Wait for a tow truck and after the hour or 2 wait I'll get in to put it in N and everything goes back to normal besides CEL. Starts/ drives everything is back to normal. First vist pulled ecm codes and replaced the ecm. Got about 30 miles and 2 days and exact same problem again. Stranded until wrecker then cleared up and could start and drive. Any ideas? I'm nervous to take it anywhere. Only mods is MIT tube and catch can.

[calgator73]

Recommend to go back to the dealer but the problem could be the grounds there have been people on here that have problems like that and the grounds by the a-pillars cause problems

 

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[saltgod]

It's back at the dealer now. But I have my doubts needless to say. I want to see if anyone had any issues that I could try. When u say a pillars are you talking about inside the truck?

[Sierra706]

A pillars are the front ones closest to the windshield. The major electrical systems all have grounding points under the dashboard right in that area

 

 

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[saltgod]

Once I get it back from the dealer I'll check it myself

[SilveradoSaver]

It's back at the dealer now. But I have my doubts needless to say. I want to see if anyone had any issues that I could try. When u say a pillars are you talking about inside the truck?

 

 

https://images.crutchfieldonline.com/ImageBank/v20150817161100/ImageHandler/scale/978/978/core/learn/article/3915/tweeter.jpgThis is the a-pillar (this is the passenger side in the picture).

[Brettm13]

Haven't had ground issues on the 2017's personally. I have seen module issues on the MOST circuit cause similar concerns though. Turned out to be a bad HVAC module was causing the ECM to drop communication. That's probably not your issue, it's just an example of what it can be.

 

 

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[saltgod]

Dealer says the throws all bcm codes then when I start it and dies all ecm codes come in. Trying to figure out how it resets itself.

[saltgod]

Gm rep coming to look tomorrow. Told me all grounds looked clean.