Question about 1991 Chevrolet Lumina

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Having problems shifting into 3rd gear and overdrive-changed the modulator and no improvement-could it be the control solenoid? tranny has 135k miles but was serviced at 25 k intervals.

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Generally if the solenoid in the transmission is dirty or defective, then one will have problems shifting into a given gear.

If the problem is to be solved, remove, rebuild, and reinstall the transmission.

Posted on Oct 08, 2010

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