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 .

Asked by for the 1998 GMC Yukon
1 answer 1 comment
Can you list the codes that you are getting?
the code was 4 blinks thats all i know.