2004 Chevy Trailblazer Speedometer

2004 CHEVROLET TRAILBLAZER
45,143 MILES • 6 CYL • 4WD • AUTOMATIC
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FN24DUPONT
  • MEMBER
  • 1 POST
I have been having trouble with my speedomometer lately. I'll be driving down the road and the next thing I know, I am doing 120 miles per hour. It will get stuck that way, and I have to keep turning on and off the engine to get it to go back to zero. Can you tell what could be the problem?
Dec 1, 2008 at 4:16 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Maybe Vehicle Speed Sensor VSS located on trans.
A scan tool can verefy VSS accuracy. Any check engine light?
Dec 1, 2008 at 4:26 AM
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