03 gmc sierra 5.3, po300 random/multiple misfire, pulled plugs and drivers side plugs are black like theyre not firing, passenger side plugs were tan. If drivers side is not firing due to o2 sensor can I change both o2 on driver side to fix issue.
if bank 1 too lean and drivers side plugs not firing, can I change both o2 sensors on drivers side to fix issue?
have the same problem?
Thursday, June 21st, 2012 AT 5:22 PM