Check engine light after fixing remote start

[acdmyla]

Hey everyone, I bought my 05 Tahoe 3 years ago from a private seller. They told me that they had a Ultra remote start installed but could never get it to work. With winter coming here in MT, I took it to a business that specializes in remote starters. They got it to work. They said they did a hard reset on the the remote starter system. Took less than 30 min. BUT when I got in to leave, my check engine light was on. I've never had a check engine light the whole time I've owned it. They plugged it in and it had 6 codes showing. All related to my torque converter. They cleared the codes and said it should be good to go. But now my Tahoe is performing terrible. From a complete stop, it's real sluggish. I can put the pedal to the floor and it won't go over 2k rpms. Once I get going, it does a little better. Wondering if the previous owners had the same issues and that's why theyou've disabled the remote starter. Any help is appreciated.

 

[Scrtcell]

Make sure that the tach wire is not touching anything also I would unplug the remote starter and see if it is still doing the same thing....