Misfire

Asked by JulesCovill1967 Oct 15, 2019 at 05:32 AM about the 2004 GMC Envoy 4 Dr SLT SUV

Question type: Maintenance & Repair

I have a 2004
gmc envoy slt
and have
replaced all 6
ignition coils but
there is still a
misfire

2 Answers
103,125

KenF answered 5 years ago

Plugs, wires, too? Also check the injectors with a noid light, the pulse may be off.

Mark helpful
11,555

FJ4072 answered 5 years ago

Jules, how do you know it's a misfire, if you scanned the check engine light, which cylinder is misfiring? Or is it a P0300?

Mark helpful

Your Answer:

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