Brian121673
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I've got a 2002 silverado 2500 hd with an 8.1L engine. Started running rough when at higher speeds and when pulling hills on the highway. Hooked it up and the code 103 (i think that was the number) mass air flow sensor and code 308 a miss fire on the number 8 cylinder showed up. I changed the plugs and wires replaced the coil on #8 and replaced the mass air flow sensor and the problem is still present and also i am still getting the same codes. What should i try next? Any help is appreciated.
