The "trac off" came on what is this, this came on while driving? The manual states it is a enhanced traction warning light.
There are wheel speed sensors that are located in each hub. These sensors are usually responsible for the ABS/trac off/low trac lights coming on. There are couple of things that could cause one or all of these sensors to activate the "Trac Off" light. Such as a bad sensor or an issue with the hub bearings.
However the most common cause of this is a problem with the wiring. Since the sensors are subject to the elements they tend to fail due to corrosion.
In fact this is an on going issue with 2000 - 2005 Grand Am's and Grand Prix's.
If you have mechanical ability you should inspect the connections and sensor. Clean the and use some Die-electric spray on the connections. Then disconnect the battery for at least 15 minutes to reset everything and wait to see if it returns. If it does you might want to go to a mechanic because this can also effect the ABS system.
Hope this helps.
... 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.
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