HummerTech could probably shed more light on this but getting ready to install my turbocharger I've done quite a bit of research on PCMs. First, is it running okay now without them fixing anything...just clearing the codes? Second, exactly what were the codes? I can research the diagnostics for you if I know the codes. Third, are you saying the dealer didn't do anything and isn't going to do anything?? If so, that's crazy. If it happened once, it's going to happen again. If nothing else, they should replace the PCM & check all communications. The PCM gathers all the information from the various sensors, etc. & adjusts a number of settings continuously. Either a sensor(s) is defective, communications lost, or the PCM is defective. They need to fix this for you.
__________________
Jonahs
|