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??
if bank 1 too lean and drivers side plugs not firing, can i change both o2 sensors on drivers side to fix issue??
Jun 21, 2012 at 5:22 PM