Hello jbo.
I have a question about aftermarket Transmission Control Units. I have a 02 sunfire with the 2.2L ecotec, auto trans (obviously) and I'm wondering if anyone can give me some info about how well these modules work, what ones work with my car, and if they are worth buying? My main gripe with the transmission is how inconsistent it is, (I am fully aware this is probably my fault too) from a launch. Sometimes it doesn't want to hold a gear, and starts from too high a gear. If anyone could give me some info it would be much appreciated.

Thanks!