Question about 2004 Chevrolet Aveo

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My 2004 aveo's check engine light went on, then the speedometer quit working. Then the next day, I noticed that the engine would race when I firmly pressed on the accelerator. It seemed the transmission wasn't grabbing. Any ideas?

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  • rad2 Nov 14, 2010

    I was glad to hear that this is the likely solution. My daughter has the car in a major city 650 miles away and does not have a regular mechanic. NowI can tell her what to expect to hear from the mechanic when she brings it in to get the car fixed.



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Hello Rad2.
The transmission needs speedometer input for proper shifting.
When your speedometer quit and the check engine light came on it is a very good indication the speed sensor has gone bad or the connections to it.
The diagram below may be hard to see but the sensor is mounted in the area of the engine and the transmission mating.

My 2004 aveo's check engine light went on, then - kiltylake_6.gif

I hope this leads you to a repair.
Thank you for using FixYa.


Posted on Nov 13, 2010

  • FUBAR Nov 14, 2010

    Thank you for responding and the rating.
    It is appreciated............




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