2005 duramax
k3500 dually
99K KM (60K miles)
all stock
got fuel.
left hauling 13K goosneck.
with 30 minutes development a limp mode, could go over 40km/hr, or 2000 rpm
turn off, back on, fix. but soon repeated.
had fuel filter changed.
head out again, limp mode again.
dealer pegged...