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GMC Forum: 2011 Yukon XL Denali Misfiring
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Old 03-31-2018, 09:14 PM
yukon2011 yukon2011 is offline
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Drives a GMC Truck
Join Date: Mar 2018
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Exclamation 2011 Yukon XL Denali Misfiring

2011 Yukon XL Denali 2wd. CEL was giving a oil pressure sending unit failure which is in line with oil pressure gauge at zero.

Today I removed fuel rail and manifold to replace oil pressure sending unit. While I had the manifold out I replaced o-rings and gaskets. Being the 6.2L engine I could not access the sending unit without removing manifold.

Upon reassembly I now have a flashing CEL and noticable misfire as well as stabilitrak warning and traction control warning.

Any ideas what I may have messed up?

Side note, the oil pressure sending unit and gauge are working again.
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cel, denali, misfire, stabilitrak, yukon
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