Question about 1999 Chevrolet Silverado 1500

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2003 chevy silverado will not shift into drive or overdrive.

The transmission shifts fine except it will not go into overdrive and stays in 3rd gear all the time. Maybe overdrive switch?

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  • Kevin Sherry
    Kevin Sherry Feb 27, 2009

    My '04 silverado when i put truck into drive it won't get out of second gear. Also my speedometer works intermittently or not at all or registers an incorrect reading

  • fausto1er Apr 06, 2009

    after i changed out my tranny/oil and filter my truck did not accelerate as it use to and i also noticed that the overdrive or last gear did not work

  • jimmypardy Apr 11, 2009

    were is your input and output speed sensor located


  • Anonymous Mar 13, 2014

    I have a 2006 chevy equinox and its not shifting into overdrive on the highway. I put it on a code reader but no codes came up. I am having terrible fuel milage due to this.

  • Anonymous Mar 14, 2014

    how can improve the hp on a 1991 350 chevy engine, it only has 210 hp?

  • Anonymous Mar 22, 2014

    will not shift out of overdrive

  • Anonymous Apr 01, 2014

    keeps going in and out of overdrive

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  • 1,224 Answers

Transmission shift solenoid is stuck open this is a common vehicle issue in automatics and not particular to any make or model vehicle 15 dollar part and arm and leg for labor if taken in

heres an idea to try
take out the transmission filter and replace with new one make sure to take not of any metal debry in trans pan this indicates the trans had sheered its gears down and a trans rebuild is needed
the transfilter needs to be changed at a certain milage interval they can get clogged up
there is a kit you buy for your truck at any parts store
its an easy change hour of time unbolt trans pan unbolt trans filter and put new one in
kit comes with new seals less than an hour you can do it yourself

to overdrive you would feel a difference in shift badley if it was that something to keep in mind

Posted on Dec 06, 2008

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  • Expert
  • 302 Answers

Check your input or output speed sensor, One of them may have gone bad. If your spedometer works than its your output speed sensor. Another thing to check is TCM or ECM. Sometimes even ground wires aren't grounded anymore and can wreak havoc on the BCM, TCM or ECM. I would check on all these and relays as well.

Posted on Dec 06, 2008

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