I have a 2008 Chevy Uplander. The Traction control system warning light is coming on very occasionally. It comes on for a few seconds and then goes away. This has happened about 3 times in the past 4 weeks. Is this something to be concerned about or can I let it go?

The Enhanced
Traction System
warning light may
come on for the
following reasons:


If you turn the system off by shifting to SECOND (2)
or FIRST (1), the warning light will come on and stay
on. To turn the system back on, shift to THIRD (3) or
AUTOMATIC OVERDRIVE (
). See “Enhanced
Traction System” in the Index.


If the Enhanced Traction System warning light
comes on and stays on for an extended period of
time when the system is turned on, your vehicle
needs service. Adjust your driving accordingly.


The warning light will come on when you set your
parking brake with the engine running, and it will
stay on if your parking brake doesn’t release fully.
If the transaxle shift lever is in any position other
than FIRST (1) or SECOND (2) and the warning
light stays on after your parking brake is fully
released, it means there’s a problem with the system.


If the traction control system is affected by an
engine-related problem, the system will turn off
and the warning light will come on.

That's where the ABS pump is, so yes. Get the trouble codes read before you replace anything

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.

check abs system --speed sensor -brakes possible caliper dragging -or hub worn or damaged

My code on my van P0641 does anybody know what that mean

I had the light come on and it turned out to be the abs wiring harnes to the rear wheel had been damaged by a rock. Resodered the wire and the light went out and the traction control system works again.

You either have a problem with your engine control system, the traction control system, or you are not in the correct gear. See the explaination below. This is from the 2000 Chevrolet Cavalier Owner's Manual.

TRAC-OFF LIGHT

... If you turn the system off by moving the shift lever

to FIRST (1) or SECOND (2), the warning light will

come on and stay on. To turn the system back on,

move the shift lever back to a position other than

FIRST (1) or SECOND (2). The warning light

should go off. (See "Enhanced Traction System"

in the Index for more information.)

The warning light will come on when you set your

parking brake with the engine running, and it will

stay on if your parking brake doesn't release fully.

If the transaxle shift lever is in any position other

than FIRST (1) or SECOND (2) and the warning

light stays on after your parking brake is fully

released, it means there's a problem with the system.

If the traction control system is affected by an

engine-related problem, the system will turn off

and the warning light will come on.

If the Enhanced Traction System warning light comes

on and stays on for an extended period of time when the

transaxle shift lever is in any position other than FIRST
(1) or SECOND (2) your vehicle needs service.

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.

The Enhanced Traction System warning light may come on for the following reasons:

If you turn the system off by shifting to SECOND (2) or FIRST (1), the warning light will come on and stay on. To turn the system back on,shift to THIRD (3) or AUTOMATIC OVERDRIVE

If the traction control system is affected by an engine-related problem, the system will turn off and the warning light will come on.

If the Enhanced Traction System warning lightmcomes on and stays on for an extended period of time when the system is turned on, your vehicle needs service. Adjust your driving accordingly..

We were having this problem...have your wheel bearing checked out. There was a sensor in the drivers side wheel bearing...once we replaced it (because it was going out) the ABS and Traction Control warning lights stopped coming on.