Issue After Jump Start
So I have a 2005 Cobalt ls 2.2 sedan. It has been running smooth as silk. So yesterday while i'm at work my girlfriend went to start it and it wouldn't start, it needed a jump. She sought the help of a guy who jumped it for her and he drove off into the sunset after it was started. It runs smooth at idle, like there is no issues. However while driving, it will shift into first and second but that's all, not into third. Also the odometer doesn't work now, on the digital readout on my dash some of the numbers or letters have been replaced with a hyphen or hyphens, also on that digital readout it states power steering. I have already changed my power steering 2 times and it has worked great for the past 4 years. I have had NO transmission issues Ever. I regret to admit i realized last night that the battery is the same one that came from the factory.
So far i have removed the positive and negative off the battery for over 10 mins, to "reset the computer" and nothing changed.
i have switched the relay for the "power-train" with the one from my "rear defrost" to see if it was the relay, but nothing changed
(however i remembered as i'm writing this that my rear defrost hasn't worked for a year or so, maybe that relay was bad? idk)
What should i do?
where should i start looking first?
I just want to thank y'all in advance