I'm going to recommend someone named Greg Huggins, do a quick Google search on his name and he's got a very good reputation. Pricey (imo) but seems like he's worth it. Whoever you go to you don't want just one and done adjustment. If you've got major modifications like an aftermarket can or...
I bought these shocks below for my 2015 Yukon SLT. It has the z85 suspension code and the 3.42 towing package gears. No magnaride. Only had them on for about 500 miles but they are much better than the other knock off shocks that the previous owner put on (they put on a knock off brand magnaride...
You wouldnt happen to be interested in starting a new thread in the performance section to discuss these changes and upload an example file of yours would you? I have a 2015 5.3/6l80 combo that I also use hptuners on to get the shifts just how I like and do some other things so I would like to...
(Im copy/pasting this from the hptuners forum so ive got hptuners log files attached, the video, and the hptuners tune file attached.
Log of noise at idle - https://drive.google.com/file/d/1WpY...usp=drive_link
Log of noise while coasting - https://drive.google.com/file/d/15T0...usp=drive_link...
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