Trying to read the stock file on a 2006 silverado with a 5.3. Ive used hp tuners for several years with no issues. When trying to read stock file it will start the process and the timer numbers go haywire, from like 4 minutes to 238 minutes and everything in between. It will almost finish the process and then says ?failed.? I unplugged radio completely thinking excessive system noise but nothing works. Thanks for any help.