Question about 2004 GMC Sierra 2500
My mechanic has moved coil packs to different cylinders ,replaced spark plugs and crank sensor.The truck seems to run just fine but after 4 miles down the road the check engine light comes back on for the exact same cylinders.Spark plug wires have also been changed.
Check fuel pressure regulator for bleeding.
Posted on Mar 22, 2009
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Posted on Jan 02, 2017
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