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Transmissions and Drivetrains
Chevy Silverado
Honda Civic LX

What would cause a Chevy automatic transmission not to shift into overdrive every time?


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2011-02-16 02:59:25
2011-02-16 02:59:25
Answeri had the same problem of transmission not going into overdrive.i changed my thermostat and it works fine now.give it a try .

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Answerthe vehicle speed sensor can cause this problem or it can be the thermostat.i had the same problem and it worked for me.

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The same thing happened to my dads 96 Chevy S-10. The transmission was rusted not allowing it to shift. I would have the transmission checked out.

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My 1984 corvette transmission is not shifting into overdrive. It shifts first thru third fine.

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What you're calling "overdrive" is probably torque converter "lockup". There's a good chance that it's a sticking relay inside the transmission. If that's the cause, be grateful, since a rebuilt transmission is about the only other option.


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