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2004 Chevrolet Silverado 1500 Question: Check engine light is on AGAIN. Code is P0171-I believe this is Bank 1 and eithe

 

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kimkingtaylor, Houston, TX, July 23, 2012, 13:22
 Rookie

r Position 1 or Sensor 1. First, could someone clarify that for me. Secondly, could you please tell the location and how many O2 sensors I have on my pickup? I think 3. I just had Bank 2 Position 2 replaced about 3 weeks ago. Thanks

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    Greg's Orange Auto (12947 Answers) , Orange, CA - (714) 361-9386
    globalhelper July 23, 2012, 13:34
     Master

    THAT IS POSSIBLY A VACCUM LEAK ISSUE OF POSS MASS AIR FLOW SENOR OR FUEL OR SEVERAL OTHER ISSUES. IT MEANS B1 IS RUNNING LEAN NOT THAT THE O2 IS BAD

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