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I think your traction control button is on the center console behind the Shifter.
But, I don't think that is the problem. That switch will cause the traction control and light to turn on and off. It should not affect the brake light and anti-lock light.
I would first check your brake fluid level. Top it off with the correct fluid. The fluid is a DOT number; like DOT3 or DOT5. Use the correct DOT fluid.
If the fluid is very low, you may need your brake fluid system bled to remove any air. And you may want to check the brake pads. Low fluid may mean you need new pads.
If that doesn't work, go to an auto parts store that will scan your car for ODB2 error codes. AutoZone will do it for free. I suspect you may have a bad wheel bearing. That will cause the ABS and Trac lights to go on. I've replaced GM bearing/sensors on several of my cars. The last one was my 2005 Bonneville. The bearing and sensor are combined in one unit.
Abs Light: If its glowing momentarily while driving in slick conditions then its normal operation.. But if it stays glowing even under dry pavement then there is a problem with your anti lock brake and traction control system.. It happens commonly of wheel speed sensor which malfunctions.. Try to access the data in the anti lock brake module to find out which one malfunctions..
1. The ABS fault light will mean that the anti - lock braking facility is not working. However the conventional braking system will continue to operate. Bear in mind that you now have no system that prevents you from locking up your brakes so it is all down to the driver.
2. Traction control (TC) warning. The TC function will not be working or not working as programmed. There should be a TC on/off switch or button in the vehicle. Make sure you manually disable the TC by switching the TC OFF until the problem is identified and rectified. TC is a useful driver aid, especially in slippery road surface conditions, so take extra precautions when driving without it.
Even in good conditions the Tahoe is not a vehicle that handles well.
3. You should get the vehicle checked for the ABS and TC problem. It may only be some faulty sensors that require replacing but a proper diagnosis needs to be made.
There are many sensors on your anti-lock brake system, as well as on your traction control system. Sometimes one giving a signal will set off the other one. Unless you are can physically feel any symptoms, then a computer test is really the only way to tell what the problem is. Many auto part stores offer to check the computer, and many of those will do it for free. One you know what the computer says is wrong, you can have the problem repaired. You can still drive your vehicle, but be aware that it is highly possible that your anti-lock function as well as the traction control system may not work. The anti-lock keeps your wheels from locking up if you slam on the brakes. The traction control diverts power and/or uses the anti-lock brake system to reduce braking on a certain wheel. I would imagine that there is a problem with the anti lock brake system since it is used in the traction control system. Hope it turns out to be small!
U have most likely damaged a wheel sensor ring, in order to ID the one you damaged u will need to have the ABS/TRACTION CONTROL system tested for trouble codes, this will lead to the right area for repair.
It sounds like you have a faulty ABCM or anti-lock braking control mechanism. 2003 was a common year for failure of this. Usually your car will drive just fine, however, your ABS and traction control might not work as well as there supposed too in a collision.
Sounds like you have a problem in the front brakes or a front wheel speed sensor. A common cause for a Traction light is a faulty front ABS wheel speed sensor or harness. When the Anti lock brake computer sees a problem in the ABS syetm, it disables traction control as well.