Solving Suburban Service Traction Control Issue

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Suburban

Some problems can be fixed with one easy solution. This common Suburban issue isn’t one of them.

Electronics can be finicky things. Sometimes they work, sometimes they don’t. And typically, the problem proves difficult to figure out. This is especially true with certain Suburban models. Quite a few folks have found themselves facing a Service Traction Control or Service Stabilitrak message and/or ABS light over the years. And the solutions to that problem seem to be hit or miss, depending on who you ask.

The topic originally came up in the Chevrolet Forum way back in 2011. And it appears that a lot of folks had encountered the same issue, yet a solution remained elusive. Most of the time, it happens exclusively on the 2007 model year Suburban. Some experienced it only in cold weather, others found success by cleaning their wheels and disconnecting their battery. Others had to replace their wheel speed/ABS sensor. And some folks found success by replacing the terminator resistor (located by the rear axle) and pedal brake switch.

For  the solution took a lot of trial and error, but his dealership eventually found the culprit.

“The cure for mine was found to be the terminating resistor in the LAN wiring harness and the resistance was too high in the battery cables. That would be the cheapest place to start. If the terminating resistor is bad it will cause codes for all the modules as they would be ‘confused’ due to the bad resistor.”

Suburban

 experienced some similar issues, and his solution turned out to be nothing more than a mistakenly unplugged connector.

“Not sure if this is going to apply to many/any of you, but, I recently changed the rear shocks in my Suburban and had the same lights all come on. I searched exhaustively online and found a whole bunch of useless solutions about resetting the codes by disconnecting the battery to replacing VSS (I didn’t even bother with the last one).

It seems nobody wants to post the error they made while working back there (or at least the one I did). Above the shock tower on the back side where it is impossible to see, there is a connection that controls all of this and is very easy to unplug but not so easy to plug. 

Perhaps this is the issue you are having being intermittent and being affected by water and WD40. Maybe it wouldn’t hurt to clean these contacts, put some di-electric grease on them, and re-connect. Could be a lot less trouble then having the dealership look at it endlessly.”

The same thing happened to who went so far as to test this theory on his own Suburban.

“I replaced my rear shocks with OEM remanufactured Arnott shocks, and in the process inadvertently disconnected a plug on the driver’s side, inside frame, near the shock tower. After reading this post I recalled that I disconnected a plug on the passenger side in the same area but noticed it and reconnected it. It gave me “Service Stabilitrak,” “Service Autoride Suspension,” and “Tracking Control Off.” The ABS light was on, and maybe one other error. After reconnecting all errors were gone.”

Suburban

Others, like found success by simply giving their wheels a good scrub.

“Our 2007 Tahoe had the same problem and it comes and goes. I read on a thread to hose the back rim area. So I did that and the lights and issues went away for now.” 

For the problem came from the both rear wheel sensors.

“Service Stabiltrak, ABS, Traction Control lights came on. Dealer replaced a rear wheel speed sensor. Lights went off for about 500 miles, came on again. They then replaced the ABS module and the Throttle Position Sensor. Lights when off for about 2,000 miles. It came on again last month.

Tired of returning to the dealer, I checked the code myself. It was saying my OTHER rear wheel speed sensor was bad. I was skeptical, but I found the part online, replaced it in 10 minutes in my driveway, and the lights went out when I started the car. After reading this forum (and others), I have heard that’s its usually the front ones that go bad.”

Suburban

And if your warning lights and messages are accompanied by misfires,  suggests taking a look at the type of gas you use.

“I had an ’07 Tahoe that was randomly all over the place with ABS, Stabilitrak, traction control warning lights. Changed wheel bearings, plugs, wires, coils, etc and nothing helped.

I used a scan tool and found that the ECU thought that the fuel I was using was 50% ethanol. So it would adjust the ignition timing to compensate and the engine would misfire. If it detects a misfire it shuts down the Stabilitrak, traction control, and ABS.

Start filling your fuel tank completely and running it to almost empty a few times in a row. The fuel level sender is somehow used by the ECU to tell the car to re-learn the ethanol percentage in the fuel.”

Obviously, these issues don’t have just one solution, unfortunately. But with a little detective work, it appears that you can fix them for good. Thanks, of course, to the diligent Chevrolet Forum members who went through the frustrating process of figuring it out!

 

Brett Foote is a longtime contributor to Internet Brands’ Auto sites, including Chevrolet Forum, Rennlist, and Ford Truck Enthusiasts.

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