Abs and traction control dash lites come on and off at various time..sometimes never come on

You should have a switch in the lower center of the dash which will turn the traction control on then the light should go off.
If you have a traction light on and an ABS light on then one or more of your wheel speed sensors is defective or the ABS unit is failing.

What it looks like: The traction control warning light typically takes the form of the acronym "TC." Sometimes this light is a small illuminated picture of a car losing control What it looks like: The traction control warning light typically takes the form of the acronym "TC." Sometimes this light is a small illuminated picture of a car losing control. How this system works: Traction control uses wheel speed sensors to detect when one or more of the car's wheels lose grip and traction. When the system registers a loss of traction in one or more of the wheels, a computer will limit power to the wheels that are still in solid contact with the road to prevent a skid. Common reasons for this to happen:

• ABS is malfunctioning: Traction control and ABS (anti-lock braking system) often share the same control module and internal self-diagnostics system. As a result, sometimes an issue in the ABS can trigger the traction control light. If this is the case, then both the ABS and Traction Control lights will be on.
• Broken wheel speed sensors: Wheel speed sensors are usually in the wheel bearing assembly, and determine the rate at which each wheel is moving. The sensors relay that information to the traction control module, which determines whether or not power needs to be shifted. Wheel speed sensors can get dirty or damaged and stop working, which prohibits the traction control module from knowing when to enable the system.Traction control module is faulty: The traction control module - which, again, is often shared with the ABS - can malfunction and break altogether, causing the system to stop working. What to expect: A top-rated mobile mechanic will come to your home or office to determine the source and cause of the traction control issue, and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs. How important is this service? It's important to have the traction control issue investigated as soon as possible, as adverse driving conditions can arise at any time. While your car is unlikely to incur further damage from a faulty traction control system, it won't be safe to drive in rain, snow, sleet, or other inclement weather, or even possibly through pools of water on the road. Furthermore, the issue that is causing the traction control light to illuminate could also be impacting the ABS.

That means there is a problem with the ABS , has DTC'S - diagnostic trouble codes in the EBCM - electronic brake control module . You need to have diagnostics run on it !
Traction Control/ Stabilitrak Off: Refer to ABS Description and Operation in Antilock Brake Systems
This vehicle is equipped with the BOSCH 5.3 antilock braking system.
The vehicle is equipped with the following braking systems:
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Antilock Brake System (ABS)

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Dynamic Rear Proportioning (DRP)

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Traction Control System (ETS) (w/NW7)

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Traction Control System (TCS) (w/NW9)

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Vehicle stability enhancement system (VSES)

the ABS and traction light are on due to a failure with the speedometer. I SUSPECT A SEED SENSOR would be the culprit as if speed is not sensed from a wheel (RF / LF /RR / LR) the ABS module with be disabled and would lite the ABS and Brake light. the airbag and heated seats are on separate circuit. the air bag should be diagnosed with a handheld device ( go to advance auto or similar type parts store)n they will read the code.. post the code and I may be able to help ... also ask em to get the ABS / Brake codes a ell

sometimes something like this can be bad tires or bad brakes. first inspect your tires and brakes. it also depends on how fast you are going it could be normal actually. now my fathers s10 did the same thing but his brakes started clicking and slower to stop, but his abs computer was bad.

you will need to have the vehicle scanned. most likely cause is a wheel sensor for the abs has gone bad and that will be at least one reason as to why your traction light is on. i hope this helps

a failing ABS sensor is at fault, visually inspect wiring and also check each tire for bearing play, some sensors are a single unit ABS sensor built into bearing, if found play at any wheel that may be the one is failling.

replace/test the trac control sensor

it is from a bad wheel speed sensor.The abs, traction control and other systems use the sensor.the various codes are for various system failures.The root cause is the sensor.

Have the ABS system scanned for codes. The ABS and Traction control use the same computer. You likely have a bad wheel speed sensor.