Ughhh... Do you guys make a tuner that supports the 2008 gmc sierra 4.3 l
Or can you do a custom tune?? As most places dont. Accept returns on tuners. Thanks pat

Hello everyone,

New to this tuner but not new to the automotive world.. so I purchased this Diablosport Predator 2 7220 for GM looks like version 1.65. I have a 2008 GMC Sierra with a 4.3L.
Got the tuner today looks great,, followed instructions in book to download update agent. did so ...