My 2008 Chevy cobalt has black liquid all over the side of it. It is coming from behind the wheel. The car is reading traction off My brakes are fine but I am having trouble stopping on and off. Sometimes it feels like I simply did not brake, other times its like a grinding. Again, brakes and rotors are fine.

Check these sites to relearn traction control.

https://www.google.com/search?q=+2008+Chevy+cobalt+sport+changed+hubs+relearn+traction+control


Best to you.

Get the trouble codes read again. The traction control system gets its information from the all four wheel speed sensors, the steering angle sensor and the yaw sensor, so it's a fairly complicated system. You don't want to be guessing why the system is kicking in. Cutting power is what it's supposed to do when it thinks you've lost stability, so there's obvious something wrong with the sensors or wiring harness.

Make sure your brake fluid is at the correct level. Any issue with the brake system will cause the traction system to not work as traction control works by modulating the brake on the wheel (s) that are slipping. If fluid level is fine then the sensor for the fluid level may be bad.

depending if its front or rear if its in the rear most likely the brake wheel cylinder , and your brakes is part of the traction control why its off, you should make sure brake fluid is full and get it fix

First, check to see if your ABS and your TCS fuses are good. A lot of times, if both lights come on, it senses a failure in the braking system. Your vehicle will disable the abs if it finds a problem in the braking system, hence the red brake light/hand brake light coming on in the dash. Get a code scanner that also reads the abs module. You could have a bad wheel sensor, which is tied to your TCS and your ABS system. Either that, or you ABS module could be bad.

traction control will not cause starting issues read check engine light or security

If the ABS light comes on immediately it likely has something to do the actual ABS control unit. Those are expensive, ask the place that did the work if they made any adjustments. Typically ABS control systems should only be serviced by the OEM. If the light comes on when you are driving, or if there is a catastrophic short in one of the wheel sensors it would also cause this and be far cheaper. Since the traction control light is also coming on it may very well be a wheel sensor since the same sensor is often used to detect wheel slippage and motion stop (for traction and ABS). The sensor price varies, for my Chevy Corsica is was 60+ for the front ones, and a lot for the rear since the sensor was housed in the hub. (if you have disc brakes in the rear, the price should be the same. i own a repair shop,and its not as bad as it sounds on this one,it could just be maintenance reminder on it causing this to happen they will do this ever so many miles,but i would have it checked,because when they was doing the brakes on it they might have hit a sensor and knocked a wire loose on it or something,but its not a big major thing with it,but take it back and have it checked,at this time there would be no way as to guess the cost of fixing it,if its a loose wire,probably 0 cost on it,but have it checked to be sure,good luck i hope this helps

The horn(s) are buried behind grill. You have to disassemble grill and a ton of hardware by AC condenser and fans. Horns are mounted on front side of radiator support.

There are a few items to check.
1) Brake fluid level
2) Brake pads
3) Wheel sensors and wiring (these send data to ABS and traction control)

If all the braking system seems to be fine then I would guess a wheel sensor is faulty which would make the warning lights come on.

It would be a straight forward swap if you can find a car that shares the same chassis as yours with disc brakes on the rear (no cutting or welding) I think that the cobalt ss or the pontiac g6 gt have disc brakes that will bolt right on