2018 GMC Denali Build

Which level did you go with and who’s going to be tuning it? My 8spd truck has the Chevy shake, feels like it is in the trans tuning or possibly the converter like some have had issues with. If dealer can’t do anything I’m hoping blackbear can clean it up.
 
Which level did you go with and who’s going to be tuning it? My 8spd truck has the Chevy shake, feels like it is in the trans tuning or possibly the converter like some have had issues with. If dealer can’t do anything I’m hoping blackbear can clean it up.

Blackbear can’t tune the 8spd, afaik only HPT can


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Which level did you go with and who’s going to be tuning it? My 8spd truck has the Chevy shake, feels like it is in the trans tuning or possibly the converter like some have had issues with. If dealer can’t do anything I’m hoping blackbear can clean it up.

There is a TSB out for it. Flush and refill.