Question about 2003 Chevrolet Impala
If the front hubs have been replaced, the problem lies in the harnesses
to the wheel speed sensors. Here is a bulletin number for you, 03-05-25-008. It talks about replacing the harnesses to both front wheel speed sensors.
The traction control activates because the system thinks a wheel is slipping. If you slow down at a slow rate the abs might activate also.
Posted on Jul 27, 2009
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Posted on Jan 02, 2017
SOURCE: Traction Control comes on
I would recommend you have the vehicle scanned for trouble codes. You can get this done at no charge at your local Auto Zone or Advance Auto Parts store.
Record the code numbers and reply back to this message and we can go from there.
Based on your description, I would guess you may have a HWSS ( hand wheel speed sensor) issue or possibly an ABS wheel speed sensor problem, again, this is only a guess until you have the codes read.
Let me know.
Posted on Apr 16, 2009
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... 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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