The button does not work because there is a problem with the TCS system. Most common is a bad Wheel bearing/Hub sensor which is built into the hubs. I recommond if you are not a mechanic to take it to a garage. A dead give away it is the hub sensor is if the ABS light is on as well. A ABS scanner can also tell you the problem but they cost about $200. When driving listen for a humming noise coming from either side.
The "trac" button is for traction control. By default, traction control is always on unless you turn it off.
It is the front wheel drive traction control light. When your tires spin on wet roads the traction control helps regain your tires grip on pavement. Find the button and push it. The "trac off" light will go off and it will show "traction active" only when the system is in use. Note that you cant do a burn out with traction control "on". :)
If it has traction control, there would be a "trac off" switch on the dash.
This button exists on 1999-2005 model Grand Ams. It is the enable/disable switch for "Advanced Traction System" which is GM's fancy term for traction control. Traction control on the Grand Am works by reducing throttle output and possibly by engaging brakes. It is not necessary to ever use the ATS disable switch, but it could be considered a toy for driving enthusiasts. When the ATS switch is active, you should see an amber "Trac Off" light illuminate in the instrument cluster.
There is a push button on the shifter right where your thumb is, that is the trac button. Under normal driving conditions keep it off. Turn it on when it is wet or snowing for better traction control. If you have problems with your abs the light may stay off permanently as the traction control feature is actually the automatic application of the brakes to maintain even traction between the drive wheels.
i have a 2002 grand marquis and when i driving on the highway at speed of 60 to 70 the light of traction control star to flash way is the problem
ETS on a GT means Enhanced Traction System (ETS) or Traction Control.
It stands for "enhanced traction system "
click ETS next to the Hazard Lights
u know the red triangle right above your stereo.its right there next to the ecs button.the ecs button is Electronic traction Control System
Open glove box and look the the left side of the opened glove box. There is a button there that can be pushed in to turn it off. Also check your owners manual.
check the wires going into the rear brake assembly, those go bad, and when they do your abs and trac light stay on, to fix it replace the small pigtail piece by the rear brakes. go pontiac!