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2003 Chevrolet Trailblazer Question: location of speed sensor



Visitor, 4.2L 6 Cylinder, Glendora, NJ, April 27, 2010, 21:06

I have a 03 trailblazer and cannot find the location of the speed sensor so that I can replace it. Could you please tell me where it is located?

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  • Answer #1

    October 28, 2010, 09:48

    It's in the transmission. However, if your speedometer isn't working it's likely an instrument cluster problem. This is very common on the 03-06 Trailblazers. The cause is the motors behind the gauges are failing, they all go out eventually. You can get it repaired here - and there's a DIY guide here -

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