Humidity set off Traction and Stabilitrak

[novemberr]

The truck is 2012 Denali XL, 106K miles, no mod.
I have experienced a weird problem since November last year. It happened 4 times only in humid weather after rain/snow.
During normal driving in a humid day, both Traction and Stabilitrak were set OFF with some burning smell.

Engine codes P0206 P0300 P0306 showed up twice. Engin shaked and stalled once. Code C0561 showed up once.
I checked the resistance of injector circuit/wire with a multimeter and all fluid level are in range.
I used a generic bluetooth OBD scanner to clear the codes. The truck was driving fine in sunny/dry weather.

There was a snow storm in NJ yesterday. I started the engine to idle for 30 minutes without moving. No warning light came on. Drove another 30 minutes without problem.

I searched online. A lot of people had this Traction/Stabilitrak problem, but not in humidity.
My guess is the wheel bearing or ABS sensor. But I'm not sure about it and eager to hear opinion here.

Appreciate your thought and input.

 

[novemberr]

 

[Fless]

IIRC the misfire issue will trigger those functions off.

 

[novemberr]

IIRC the misfire issue will trigger those functions off.

Do you mean that the misfire caused Traction/StabiliTrak OFF. Will misfire happen intermittently? Will misfire happen at engine idling?
Thanks for help.

 

[novemberr]

The Traction/StabiliTrak light came on before flash engine light. Does this still imply the the misfire may be the root cause?

 

[Fless]

I have heard that about misfires, but I can't confirm as I have not experienced it on mine (it's old enough to drink...). Maybe others will chime in.

 

[Foggy]

Misfires will cause it to go to "limp mode" which always sets off the
traction control abs wheel speed kinda stuff.
You need to fix the p206 & p306.. Cylinder 6 misfire and/or injector
or wiring issue for sure. The P0300 almost always sets with specific cylinder
misfires. maybe time for plugs, wires, injector cleaning imo

 

[novemberr]

Thank you all for kind advice. I drove the car the whole afternoon today. Everything is normal.
This problem really got me.

 

[Foggy]

Thank you all for kind advice. I drove the car the whole afternoon today. Everything is normal.
This problem really got me.

You def have an issue.. If you keep getting misfires, You'll toast your cat converters
very quickly. I'd at least get some OE acdelco plugs and plug wires at very minimum

 

[Marky Dissod]

Since nearly all the misfires are at cylinder #6, try swapping plug wires with cylinder #1.
If the problem moves to cylinder #1, you need a new plug wire.

If the problem stays with cylinder #6, try swapping COILS with cylinder #1.
If the problem stays with cylinder #6, you need one new spark plug.
If the problem moves to cylinder #1, you need a new coil.