Service Stabilitrak/Traction Control Off, etc.
It gave this similar series of messages in February this year along with Traction Control Off and Service Traction Control. Also got a Throttle Body message along with engine speed reduced. At that time I replaced the Throttle Body and cleaned out the mass flow sensor and the whole tube between the air filter and throttle body. I also modified the PCV valve (drilling it out). This took care of the throttle body message, but the stabilitrak/traction control stayed on. Then I saw that if the brake fluid level is low it can trigger this issue, so I topped off the brake fluid and the messages went away...
...Until this week. Now the Service Stabilitrak/Traction Control Off/Service Traction Control is back on along with the ABS light. But no throttle body message and no reduced engine speed this time. So I topped off the brake fluid again (I probably have a very slow master cylinder leak). This didn't do it this time. Today these messages came back and while I was stopped at an intersection, someone came up next to me and told me my brake lights were not coming on when I hit the brakes and turned on when I took my foot off the brake. So I took the vehicle home as quickly and safely as I could. When I got home, the brake lights were working fine (messages still on). Also before the brake light discovery on the way home I took it to Advanced Auto parts store and they told me they would not be able to get any codes with their diagnostic tool. I have Torque Pro and no codes pop up with that, either. I'm pretty sure the problem isn't throttle body this time and the problem is most likely due to the brake system.
Anyone have this variant of the Stabilitrak/Traction Control/Brakes issue? Should I go to the dealer on this one? I was going to go to Tires Plus as they've been pretty good with recent fixes, including a brake job about a year ago, but wondering if they have the expertise.
Last edited by neustkg; 09-06-2019 at 09:38 PM.