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    2012 sonic transmission

    Nudge
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    Transmission issues: resetting TCM fixes problem but only temporarily

    Hi all, I've been browsing through the forums trying to find a solution to my transmission issues. Having a lot of the same problems others have noted with clunky transmission, hard shifting, and delayed shifting into higher gears. I've had the car in to a few shops for other issues and asked...
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    Transmission fluid change....is it too late?

    Did you end up changing the trans fluid? If so, any slippage?
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    2012 sonic transmission

    Anyone ever find a fix for this? Experiencing similar issues.
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    Possible transmission issue? Need help diagnosing.

    Hi all - 2012 Sonic LTZ 4 Cylinders H 1.8L Automatic, 108k miles. I recently had an oil change, replaced bad thermostat and radiator fan. The below symptoms have been occurring for 9+ months: Poor gas mileage. Computer reads 24mpg even after highway driving. Excess vibration, especially when...
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    My Sonic is sick— multiple symptoms. Help me diagnose?

    Hi all, 2012 Hatchback LTZ owner here. 105k miles. Recently replaced coolant overflow tank (cracked), had some front end work done (control arm, sway bar links, tie rod), replaced leaking flex pipe. The below symptoms have been occurring for 9+ months: Excess vibration, especially when idling...
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