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    2014 Chevy Sonic - Transmission Control Module (TCM) Issue

    Yes I did. It cost me nothing. Basically, you have to reset the car computers. When you unhook the battery, it doesn't fully reset it. So, if I remember correctly, you have to push down on the accelerator fully for like 10 or 20 seconds, then turn the key fob to the position just before the one...
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    2014 Chevy Sonic - Transmission Control Module (TCM) Issue

    I have the same issue. 2014 chevy sonic 1.8. Rough start, traction control light turning on and U0101 (lost comm with tcm). Car clicks and it doesn't show what gear I'm in on the display. Drives fine, but sometimes it jerks really hard, shoots up to 4500 rpms, doesn't accelerate for a few...
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