2005 equinox Ls. 3.4 V6 Engine. Code P0054. I replaced( with new) upstream and downstream O2 sensors. Erased the code. Run vehicle for about two days 20 miles. CEL came back with same code P0054. Do want to check wiring but have no squematics or way to trace back to PCU. I also checked the emission fuse and is ok. Would you please help me with a diagram. Thank you and God bless.
have the same problem?
Saturday, July 23rd, 2011 AT 8:11 PM