Had 1-2 shift solenoid go bad . Changed both shift solenoid's while I was in there. Also changed the pressure solenoid while I was at it. Used AC Delco replacement parts. Now no shift code. Po2476 low voltage to clutch pressure solenoid. Had a shop do a diagnostic test and told us it has a short to ground causing low voltage. It just shifts alittle hard. I also changed the TCM And had it flashed to the VIN#.HAS NEW FLUID AND FILER ALSO . Good and clean Car has a 122000 on it runs and looks good for an 06. Ant HELP Would be greatly appreciated. Thanks Ray !