i am trying to perform the calcvet tuning with the 1999 silverado. ive loaded two different os from 2001 and 02 and none of them are getting a reading for the dynamicairtemp pid. ive changed the calc.pids to the alternate one as from the summary of the calcvet although still having troubles. is there only a certain OS that is compatible with the CALC.VET tuning method while being loaded into a 1999. and also the dang truck has a battery light on when the latermodel os are loaded into the truck but it still does charge correctly. even switched the vehicle platform options to match the 1999 cal and it doesnt help.