P0304 Misfire Cylinder 4

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fredfifty

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Sep 19, 2014
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I finally got a hold of a code reader and found out my 99 threw a misfire code. I actually first seen the code a month ago, then it went away for a couple weeks and now it has returned.

What are some of the solutions to this? I will do a full tune up with ac delco parts, but what could it possibly be, worst case scenario?

I do not tow anything, and I don't drive it hard. I actually haven't even drove it since the code, but is it damaging to drive a little with a cylinder misfire?

btw, my Tahoe has 142k miles.
 

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