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Old 08-27-2021, 06:54 AM   #6
richard2717
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Join Date: Oct 2011
Location: Eastern Shore of MD
Posts: 9,886
Re: 06 chevy express codes

Well, so far I have changed 7 out of 8 coil packs (#1 cyl I have yet been able to reach from either direction) The MAF sensor and 3 out of 4 O2 sensors The forward o2 on passenger side is froze and won't budge. May end up replacing the entire cat pipe from manifold to muffler since rock auto shows them available. I took it for a 100 mile round trip and the only time the check engine light comes on now and flashes is when under load like leaving a light or going up hill. Only code it is throwing now if the PO300 random misfire.
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