IN SHORT I have a 2005 GMC 2500HD DURAMAX 6.6 Turbo 100,000 miles.
The issue I'm having is a reoccurring non crank with a P0601 No Communication with the PCM using modules 18,10 what ever that means. Issue started about 8-9 months ago took about 5 mins turning the key every 30 - 60 sec"s. Was...