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  1. Count me among the supposed few to have this...

    Count me among the supposed few to have this problem. Just put a new factory converter in since my Circle D won?t hold lock.
  2. That's some great info Ryan. I'm going to dig...

    That's some great info Ryan. I'm going to dig into my 16 Denali and see if it's close to that. The truck was tuned by Blackbear until recently when I added a Circle D converter and found out they...
  3. Thoughts on this Blackbear Performance Tune - 2016 Sierra 6.2/8l90

    Hey everyone, I've got a 2016 GMC Sierra with the L86 E92/8l90 T87 combo. The truck was previously tuned by Blackbear as I'd used an Autocal (EFI Live) on my previous trucks and been happy with it. I...
  4. Hey Steve, I've got some questions regarding...

    Hey Steve,

    I've got some questions regarding this on my 2016 Sierra with 8l90 and a Circle D. May I shoot you an email with my tune files to get some guidance from you?
  5. So I know this thread is pushing a year old at...

    So I know this thread is pushing a year old at this point, but I am very curious if you've figured anything out on your truck? I just read through all the posts and I'm having nearly the exact same...
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