Question about 2000 GMC Yukon XL
P0308 Number 8 Piston Miss firing change spark plugs and wires problems still
Posted by Anonymous on
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Posted on Jan 02, 2017
Very good chance that it's bad fuel injectors and/or fuel pressure regulator. Very common with the 96-2000 L29 motor (Vortec 7.4L)
Replace with better injectors, the OEM ones are NOT WORTH cleaning. Go to http://www.fullsizechevy.com/forums/general-discussion/technical-maintenance/213662-96-99-454-vortec-owners.html
for more info...
Posted on Oct 07, 2009
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