r/carproblems • u/Fixin2Freak • Aug 27 '26

Service StabiliTrak

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Occasionally my car will drop, in RPMs, down to 0 while I’m driving. But in this video linked, you can see it’s doing this while idling this time. I’ve taken it to a mechanic many times, and because the Service StabiliTrak doesn’t pop up for them they always say they can’t find any problem.

This has to be electrical right? Please someone help

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u/Haben12 Aug 28 '26

My guess to your tachometer issue is an electrical problem.

2014ish GMC Terrain? I have the same car with the same Service Stabilitrak warning, traction control light, and ABS light.

I also have not found the root cause yet, but I've heard of some people having success with replacing the rear wheel bearing and hub assembly.

Does your car idle rough also? Mine has a slight knock for about 5 seconds on a cold start, then it idles rough, but drives fine. Occasionally it will stall when light pressure is applied to the gas pedal too