Duramax tuner
Has anyone out there used a tuner/programmer on their Duramax? I tow a Jayco 37'FW with my 2013 Sierra 2500HD Duramax it does a good job but I'm wondering about doing some performance enhancements. I'...
Forum Discussion
midnightsadie wrote:
just a though, if you play with this stuff??? and then have a problem. when they hook up there machine it,ll show what you done .I think it,ll kill your werrenty.
I seriously doubt he has a warranty left on a 2013 truck.
