Service Stabilitrak

[Jake707]

The wife’s 2017 Yukon XL Denali 6.2 had a service message come on saying “Service Stabilitrack” today. I checked it out with my cheopo scanner and pulled the two codes below but have no idea what they would relate to.

P182A
P0700

The symptoms I found while driving are below, not sure if they are all related or will help someone point me in the right direction but listing everything haha

- Check engine light on

- Service stabilitrack message at start up

- “Park assist off” message at start up

- Reverse camera does not come on

- Need to push the gas pedal much further to accelerate

- Clicking noise when releasing brake pedal. This one was odd but I tracked the clicking noise to be coming from the column shifter handle assembly. Only does it with the car in gear, not in park, and does it every time you release the brake pedal

- Turned the truck off and got a “shift to park” message even though the Yukon was in park

 

[B-train]

I believe the PO700 is a generic transmission code. The other code seems specific to the gear position identification for the TCM. It could be a failed sensor, harness, corrosion, internal switch, etc.

How many miles on the truck? Has the transmission been serviced regularly? Like every 40-50k? 8 speed trans I assume?

 

[Jake707]

It has 170k miles and transmission was serviced a couple thousand miles ago, full flush, new fluid and filter. Yes 8 speed trans