check engine light on on 1998 GMC Yukon

check engine light on .. scanned spark plug 4 replaced. cleared code. got gas . light came back on saying misfire in 2 spark plug 4. ?? light still on .

by in Morton, PA on October 15, 2009
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1 answer 1 comment
ANSWER by , October 15, 2009
Can you list the codes that you are getting?
COMMENT by , October 15, 2009
the code was 4 blinks thats all i know.