Service traction system light is on

Tiny
TBRETTNACHER
  • MEMBER
  • 2003 PONTIAC MONTANA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 80,300 MILES
Our van has started to have the center dash read service traction control system. When that automatically comes on the van shuts off the traction system so another light in the dash reads now trac off. Now ever since this happens our cruise control will not work either.
Saturday, October 25th, 2008 AT 6:21 PM

3 Replies

Tiny
DENNYP
  • MECHANIC
  • 1,824 POSTS
Have it checked for trouble codes in the ABS system. It could have a bad hub assembly or broken wiring harness to the hub.
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Tuesday, October 28th, 2008 AT 11:59 AM
Tiny
GMITCHELL50
  • MEMBER
  • 4 POSTS
I am willing to bet that you also don't have any lower brake lights. The traction control, cruise control, and brake lights are all connected and if the brake lights go out the others won't work properly. If changing the bulbs does not work you probably need new cicuit boards which can be purchased on ebay for about $30 each. I just had to make this repair myself and it was very quick and easy.
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Tuesday, June 2nd, 2009 AT 7:28 PM
Tiny
SLIVESEY
  • MEMBER
  • 1 POST
I have a 2002 Pontiac Montana with the same exact issue. My mileage is also around 87k.

I have brake lights, but I pulled and reseated the bulbs and connectors. I also cleaned the battery/ground and reseated the ABS sensor connectors near the hubs. All connectors looked good.

I borrowed a friend's ABS reader and it shows the wheel speed sensor was out on the right front so I replaced it now it all works! Just thought others should know.
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Tuesday, October 6th, 2009 AT 7:04 PM

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