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  1. Engine & Performance
    I recently purchased a 2010 GMC Sierra 1500 with a 6.2L, first issue I encountered was a bad coil pack on cyl. 8 that issue has since been fixed. Now I am encountering what I can only describe as what feels like a miss, or backfire on acceleration. Just noticed it this morning after picking up...
  2. Engine & Performance
    I reached out to sonnax about how gen 5 LT equipped vehicles shift so well and they told me that the way they do it is by cutting fuel in between the shifts to mimic lifting off of the clutch to shift gears and results of that is smoother and crisper shifts and that sexy shift sound, is it...
  3. Engine & Performance
    Hey all, I've got a '02 Sierra 2500 I finally regularly tow with, 8,000# or so fifth wheel and a smaller car hauler. I ended up doing a full float dually axle swap, and I have the 4.10s in the rear (what was in the axle) and 3.73s up front. I'm getting to the point where I need to swap gears up...
  4. Parts & Accessories For Sale
    Have a set of American Racing 1.75” longtubes and ORY for LS engines. Test fitted this set on my NNBS and I believe the ORY is for 2001-2007 trucks due to the ORY not fitting correctly on my NNBS. Anyways, this set was only test fitted, never driven on. I’ve had them sitting around in boxes...
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