2005 Chevy 2500HD LLY Duramax 140,000 miles
Edge Juice /Attitude, 5" Magnaflow, SB Air Intake
My truck has been running rough and only about 12mpg
my mechanic replace the EGR Valve, It ran great for a day then returned to
running like crap,and its giving Engine codes 401 & 404, now he is...