Intermittent Traction Control Light + Front Speakers Went Out - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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post #1 of 7 (permalink) Old 06-05-2014, 05:24 PM Thread Starter
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Intermittent Traction Control Light + Front Speakers Went Out

Hey Guys,

Just like the title says. The ABS light isn't going on, and I don't see the check engine light turning on (haven't ran a scanner on it yet). The vehicle seemed to drive a bit jerky while accelerating, and while decelerating it almost stalled (like a manual trans car) except when it got down to less than 500 rpm it corrected itself and went back to normal idling. Problem seems to go away when I turn off & turn on the car.

The front speakers also just stopped working this afternoon lol. EDIT: Ok, one of the speakers (Front Left) is back. Maybe the speakers are just going bad?

As a side note it was really raining hard this afternoon, so they may be related? I popped off that fuse panel on the passenger console, everything looked ok, I reseated those two connectors with levers, everything looked connected alright. Should I try reseating the wheel speed sensor connectors?

Any other ideas?

Last edited by jrsmith; 06-06-2014 at 09:11 AM. Reason: One speaker working now.
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post #2 of 7 (permalink) Old 06-19-2014, 07:47 AM
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My car has problems with stalling, jumping RPMs but only when it's below freezing (the best time to break down). BOTH my front speakers out - right one works when you kick it but sounds horrible. I've heard a lot of cobalts have the problems with speakers...something about door seals are not good and water gets in them...can also effect the auto window motor (if you have them.) I don't and my window handle is STILL broke. What a POS.
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post #3 of 7 (permalink) Old 06-21-2014, 05:01 AM
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Door speakers are exposed to moisture (poor GM design) so they fail often. Easy swap and you might as well get some new rear speakers for better overall sound. can set you up with all the parts/pieces/instructions.

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post #4 of 7 (permalink) Old 06-23-2014, 09:36 AM Thread Starter
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Thanks for the replies. I took off the front wheels & disconnected the wheel speed sensors, then sprayed the hell out of them with silicon lubricant. Since I did that the TCL hasn't turned on, and there have been some wet days since.

Regarding the speakers, I think it is definitely a moisture problem. When it has been dry for quite a few days all of the speakers work. When it's a little bit wet, the front right speaker goes out. When it is really wet both front speakers go out.
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post #5 of 7 (permalink) Old 06-23-2014, 11:23 AM
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^ i would check all your wires, ect..
last thing you would want is driving down the highway... smelling smoke and then CA BOOM!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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post #6 of 7 (permalink) Old 06-26-2014, 06:14 PM Thread Starter
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Just wanted to give an update. I finally got an OBD scanner, noticed two stored codes: u0073 and p0700. Car isn't giving any problems now.
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post #7 of 7 (permalink) Old 06-26-2014, 06:20 PM
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P0700 is your TCM that lost communication with BCM
U0073 is a high speed GMlan communication malfunction.

Pull fuse 25 flip it and push it back in.

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