It turns off your traction control. Meaning the wheels may slip in poor traction conditions when in the on position the vehicles comp. will lessen the torque on the wheels or divert the power to a different wheel. I'd leave it on!
There is also a traction control light that flickers when the traction control is detecting wheel slippage and trying to compensate. I check this and if it flickers too much, I shift down. If you turn off the traction control this light will not flicker, so you won't realize you should shift down.
There are a few rare circumstances where it is useful to turn off the traction control, the button is there for those cases but right now I don't recall them.
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Do you mean Trac off? It means that the traction assist function has been turned off. It is controlled by the trac button which if the alero is like the grand am is on the shift knob left side. Trac off is the normal driving position, turn the trac on for slippery conditions. ABS problems could cause the trac to fail as it is an application of the brakes to slow the faster wheel down to match the other side. speed sensors also have some affect.
It is the button that temporarily turns traction control off.
It is to the left of your hazard lights button on the center of the console.
The "trac" button is for traction control. By default, traction control is always on unless you turn it off.
Problem with the ABS.
If you see a light on the dashboard that flashes the word 'TRAC', then it is the traction control telling you that the car is struggling to find traction. If it flashed constantly, there may be something wrong with one of your tyres.
It temporally disables traction control.
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"Trac" stands for traction. If/when the drive wheels slip the computer causes a deliberate misfire of the engine to reduce power to the wheels. The purpose of that power reduction is to prevent more wheel slippage since once the wheels start slipping, you have considerably less control. Leave "Trac" engaged, it doesn't cause any problems during normal driving.
My 2002 sport trac has just started a very noticable roar when going done the road just started what could be the cause My 2002 sport trac has just started a very noticable roar when going done the road just started what could be the cause
Say when you turn with Trac off your motor increases and decreases power from one front wheel to another. With Trac on your motor keeps an equal amount of power to each wheel.