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I cleaned the pin connector I'm really leaning towards a bad tcm since it arcs when you add the extra ground wire, also a couple months ago the car got the power steering message I added a ground and it fixed it until now, I'm hopping I made the right troubleshooting by ordering a used tcm my next question is will the used one with a matching part number allow my car to run without being programed
did you figure out what the problem was. my cobalt is doing same thing
 

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Umm not sure about air bag stuff, but the car ran fine drive fine it has over a quarter tank of gas. Just all of the sudden the car wouldn't start I lost my dic readouts besides odometer and it displays low fuel and power steering on the dic . And none of the gauges work. I swapped out the tcm for a used one it changed nothing if I hook a ground up to the tcm case I get very very fine Sparks I'm trying to figure out what would cause this. I'm load testing the battery tommorow at work.
i still cant figure out what the fix is for this. im having same problem plz help
 

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2007 Chevy Cobalt 2-door coupe
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Hey my ‘07 says power steering and low fuel lights on. It won’t start won’t crank but all the lights and everything else works. I only have the key but not the fob. Can I possibly bypass this fob system to get my car started
 
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