p0650 & p0281 I am stumped! 2004 slt z71 4x4 5.3

[breeze.12]

have these 2 codes. the 281 is a soft code or maybe a history code, but the 650 is hard fault, cannot be erased, service light on all the time. cleaned the grounds, checked the fuses. I am wondering if something in the cluster itself is bad. some on diesel forum had problems with starter relay causing code, I hope someone has some ideas thanks ( po650 is malfuction indicator lamp), and the 281 seems to be a fault in #7 cylinder not concerned with this one, it cleared and hasnt returned thanks





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