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Discussion Starter #1
Hey guys,

I bought a used Camaro automatic 2LT V6 a few months ago with 15K miles and have been having service stabilitrak come on the dash periodically throughout my entire ownership. I have taken it to several different dealerships and each time they have "fixed" the problem. I have had 3 wheel speed sensors replaced, on different wheels, and service stabilitrak stays off for about a week. Then it comes right back on again. However, I started noticing that the Service Stabilitrak message will not turn on in warm weather. It mainly comes on in temperatures in the 50's or below. If the car had been turned on in the cold weather the message and all the lights will remain on. But when it warms up, like in the afternoon, the message no longer appears and the lights are off. The only mod on the car is an airaid CAI (installed by previous owner).

From all my research I understand that stabilitrak is integrated into every part of the electronic portion of the vehicle and if one section gives a faulty reading then the message will appear.

Thus, even though the dealerships keep wanting to replace wheel speed sensors, could Service Stabilitrak be triggered by the CAI? Maybe the computer is getting cooler air than it thinks it should and thus sends the message? No check engine light comes on either (The CEL did come on the second day I owned the car and it turned out to be a faulty MAF sensor that they replaced. No CEL since then). I'm about at my wits end here so help would be appreciated :BangHead:
 

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Discussion Starter #3
I've waited on them to get the parts in stock so yes. Why would the sensors malfunction only in colder weather?
 

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Stabilijunk

Hey guys,

I bought a used Camaro automatic 2LT V6 a few months ago with 15K miles and have been having service stabilitrak come on the dash periodically throughout my entire ownership. I have taken it to several different dealerships and each time they have "fixed" the problem. I have had 3 wheel speed sensors replaced, on different wheels, and service stabilitrak stays off for about a week. Then it comes right back on again. However, I started noticing that the Service Stabilitrak message will not turn on in warm weather. It mainly comes on in temperatures in the 50's or below. If the car had been turned on in the cold weather the message and all the lights will remain on. But when it warms up, like in the afternoon, the message no longer appears and the lights are off. The only mod on the car is an airaid CAI (installed by previous owner).

From all my research I understand that stabilitrak is integrated into every part of the electronic portion of the vehicle and if one section gives a faulty reading then the message will appear.

Thus, even though the dealerships keep wanting to replace wheel speed sensors, could Service Stabilitrak be triggered by the CAI? Maybe the computer is getting cooler air than it thinks it should and thus sends the message? No check engine light comes on either (The CEL did come on the second day I owned the car and it turned out to be a faulty MAF sensor that they replaced. No CEL since then). I'm about at my wits end here so help would be appreciated :BangHead:
It looks at engine power if engine has low power it will flash a service stabilijunk message mine was a sparkplug wire not seated
check plug wires sparkplug and coil
do the wiggle test on your MAP sensor and all other sensors
clean CAI filter
check battery condition
scan for code right after message flash
 

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I've waited on them to get the parts in stock so yes. Why would the sensors malfunction only in colder weather?
From past experiences with my wifes car, 9 times out of 10 a stablitrac issue involves the sensors. Not sure about the cold weather thing though.
 

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Discussion Starter #6
I will check all the connections tonight and look for any problem areas. What is the wiggle test and where is the MAP? I only know where the MAF is...

Camaro Freak, with your wife's car which sensors were the problem? Was it an ongoing issue for her? I don't want to be dealing with this after my warranty expires...
 

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Discussion Starter #7
Checked all the connections and didn't find any loose wires. However, I'm no expert at this so I could have missed something. I also checked for a leak in the CAI but did not find one.
The main thing that baffles me is that it comes on in cold weather but not normally warm weather... :confused:
 

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when i had my 1LT i had a similar issue, when i turned the car on it would sputter a bit and give me a service stabilitrak message. after many many trips to the dealership, it was actually a cam placement sensor in the engine that was shorting out my ECU, once they fixed that it was fine
 

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Discussion Starter #12
So I called the dealership today and spoke with one of their service advisers because I had an idea...my tire pressure monitoring system always shows my tires about 2 psi lower than my pressure gauge. Thus, I reasoned that maybe the TPMS was registering low tire pressures and triggered service stabilitrak (hence the cold weather factor). However, the rep told me the two systems were not related and that could not be the cause. After discussing my situation further he proposed that my BCM (body control module?) could be going bad. He said it's basically the on board computer system for the car. Does that sound plausible? :confused:
 

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Discussion Starter #14
First day in the 40's in over a week and no Service Stabilitrak today. I remote started as well as manually started the vehicle to be sure I covered the possibilities. This is a good sign! Kind of blows my theory out though...
 

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It's definitely not a cold weather issue. It just seems to malfunction (inconsistently) until it fails completely...just like my O2 sensor did. But it is a problem to get ANY dealership to fix something they don't deem broken yet.

And your pressure gauge is probably off...it's pretty common. I have one in every car and I decided to test them all for accuracy one day. There was a 5 psi range difference in the readings from all my hand held gauges...they were very consistent...but still off. So I put the only accurate one in Envy and all the other cars are screwed...lol.
 

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Discussion Starter #17
Hydromo - Very odd...this message seems to stem from way too many causes to be very useful.

Envy - I have multiple pressure gauges as well, and they have always given the same readings within 1 psi, so I doubt my gauges are off. I'm betting the camaro's sensors are wrong.

And my message had not been on in a long while even though the weather dropped into the 50's, but as soon as we hit the 40's it was back on. Still goes away as soon as the weather warms up. I scheduled an appointment with the dealer and sure enough the message didn't come on that day, so I guess I'll wait until it comes back on before I take it in.
 

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Service StabiliTrak Message Displayed at Startup
By Blog Post on May 1, 2011 2:24 PM | No Comments
A 2010-11 Camaro may have an intermittent Service StabiliTrak message in the Driver Information Center (DIC) only at startup, and then the message will disappear within seconds of starting the engine. This message is displayed during the bulb check of the other instrument cluster indicators. This message will not remain on and no DTCs will be stored in the Electronic Brake Control Module (EBCM).

This condition will occur only under specific sequences of ignition switch operation. For instance, the driver may quickly flick and release the ignition switch during Start/Crank mode. After the ignition switch is released and the engine starts, the DIC Service StabiliTrak message may then be displayed. The condition may not occur each time this ignition switch sequence is performed.

If no EBCM DTCs are stored and the Service StabiliTrak message is displayed only at startup for a few seconds, then no repairs should be performed.

Engineering has identified the condition and has verified it is normal under this specific ignition switch sequence of operation. A revised calibration is available in TIS2Web. No parts should be changed to resolve this concern.
 

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Thanks rrings...that information is very helpfull. And BTW...Welcome!
 

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Discussion Starter #20
Just wanted to give everyone an update...I have contacted GM about my situation and they have proactively begun assisting me. GM contacted my dealer and set up an evaluation meeting with the head of the service department. Things are happening much more quickly now, but unfortunately the problem has still not been resolved. Again, GM is now working with me on this issue and hopefully we will come to a solution soon.
 
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