ok thanks in advance for any redundant questions or simple information im being stupid and missing. mechanic of 25 years... but this is a whole new realm to me.
. trying the pcm hammer, obdLx and tuner pro route to try to turn off vats. previously sent it out to a reputable source to have evap, rear o2, knock sensors, and vats turned off,
everything but vats was turned off. I really dont want to send it out again.
this is where i hit the brick wall. Maybe one of you knowledgeable people can direct me to what i am doing wrong.
1. read computer... os ID 12593058
2. save bin....
3. open tuner pro. try to up load bin file... doesnt load on tuner pro to change vats.... not sure exactly if im doing something wrong...

what could i do differnt or upload to change the vats..

car info. 5.3 2003 out of a gmc yukon, th350, returnless system, drive by cable but otherwise stock.
is there a file i could download to re write on the computer? i cant seem to find anything...or else my lack of knowledge as to what to look for is hindering me from starting the car.