Hello, can someone please guide me to the instructions for installing the GMS 1 Performance Upgrade Kit on a 2008 Cobalt SS. I have a 2009 SS and want to switch it to a 2008 SS I am buying.
A link or whatever would be much appreciated.
Thanks, Jeff

 

Thread: https://www.cobaltss.net/forums/how-...t-gms1-267728/

You will also need to tune the car when it is installed or else the car will go into limp.

Also the car that you are switching it over from needs to be retuned for oem tune or hptuned.

 

you may have a hard time with using a GMS1 kit, because the tune is based on the vin, so that kit was already used on the old car. you may be able to switch any parts over, like the bar sensors and such, but you'll either have to buy the tune again or go through HPT for a custom tune if i'm correct.

 

You cant swap the tune though.


Buy the plug and play harnesses from OTTP and get a HPT tune. Any tuner can flash a stock GMS1 tune to a LNF pcm through HPT.
OTTP may even be able to just do it for you as well when you buy the sensors.

It will be half the cost or less than a new GMS1 kit.

 

What he said^^ that's exactly what i meant.

 

Why are u selling the 09 for an 08