Okay I'm new here so Moderators please don't beat me up too bad. I done several searches on the forum for "Jaspers 4L60E Transmission" with no matches found. Which brings me to my question, I have a 2005 Z71 Silverado with 64000 miles on it. Christmas eve while driving home thru Washington DC my transmission started slipping and not shifting up or down. I made it home and had it towed to a buddy's shop on 12/26/13, after I uninstalled the Bully Dog GT tuner setup I had installed on it, which I had all of the trans settings set to stock and I upploaded the stock OEM configuration. He said the trans was done swapped the OEM trans for a Remanufactured Jaspers 4L60E Transmission. He said they are much better than th OEM trans and not to worry. He changed all of the drivetrain fluids: front diff, rear diff and transfer case with Lucas Synthetic all for $2900.00. I got the truck back put the Bully dog back in and set the trans settings to tow. Now I have 3 questions: 1. Has anyone had any issues with the Jaspers remanufactured transmissions and does that sound like a fair price? 2. Does anyone have sugesstions on how I should setup the Bully Dog to improve performance and fuel economy? 3. I'd like opinions on the Bully Dog GT Tuner are they worthy or are they a POS and part of the problem?