Engine running rough

Asked by Feb 01, 2016 at 02:53 AM about the 2006 Hummer H3 4dr SUV 4WD

Question type: Maintenance & Repair

Engine light comes on, blinks for a
while then remains steady; engine
idles rough; what causes this

4 Answers


You have a misfire I'm 90% certain. Have a scan done for stored dtcs. If none are there. Have a good mechanic run a diagnostic.


Maybe a tune up? maybe some maintenance- I have nightmares like this- for some reason I own a hummer and it starts breaking down- yikes! then I wake up-


Your mil lamp is on. Scan it first. Don't buy un neccessary parts. What if u only need one plug wire. Please listen before u spend money


What are you working on anyways? Could be a coil pack

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