RE: Reading codes on a 99 5.9 Durango
I haven't had the check engine light on in a long time but I know if you hold the trip/reset button while you turn the key to the "on" position and then let go it will test all the gauges. I don't know if it will tell you what the code is. I always use a snap-on scanner.
Prime Performance 5.9 bored .030 over,HER1828AL Cam,HPHD-MAG1-SP Heads with 110 Springs,Crane 1.6 Roller Rockers,Ported Intake,Holley 52MM Throttle Body,MSD 24/lb Injectors,MSD Ignition,Hughes Engines Re-flashed ECU,Gibson SS Headers,etc.