I am trying to delete the DOD on a buddy's 09 Silverado 5.3. I downloaded the tune, then deleted the DOD. When I went to flash it there was apparently a requirement for 3 credits, not just the 2 I purchased. I noticed when I downloaded the tune that it was reading 3 modules, not the usual 1 module I am used to. When I flashed it, it used my 2 credits and showed the need for a third credit (that is how I interpreted it). I found that I was unable to do anything with just two credits on this vehicle. I went to the supported vehicles and it does not show the need for more than 2 credits for this vehicle. From what I was able to find on the internet it appeared there are some setups that require a total of 4 credits instead of the usual 2. So my question is do I purchase the third credit and flash it, and if so will that do the job? This is basically all the owner wants to do with this vehicle. All input will be appreciated.
Thanks, Jim