1999 Tahoe 5.7L missfiring on 3
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1999 Tahoe 5.7L missfiring on 3
Intermittent then flashing yellow "Service Engine Soon" indicator light with rough running engine. C0303. Found #1 wire cracked and arcing to #3. #3 plug burnt. Replaced all plugs & wires, rotor and cap. Same indicator back on when engine temp came up. Found cap not seating correctly. Replaced with another cap. Same problem. What now?
