Chevrolet Q&AAsk Your Question
2005 Chevrolet Silverado 1500 Question: whats a repair solution for a po455 code on a 2005
Answer #1Greg's Orange Auto (13428 Answers) , Orange, CA - (714) 361-9386globalhelper February 01, 2012, 12:59Master
YOU HAVE A LARGE EVAP LEAK. REPL OR CK GAS CAP FIRST,CK THE O RING ON THE INSIDE OF THE CAP. IF NO PROBLEM FOUND HAVE TRK SMOKE TESTED TO FIND LEAK. THESE CODES CAN BE A PAIN IN THE BUTT
Answer #2omar80 February 12, 2012, 01:17Rookie
i had the same problem,everyone told me to change the evap vent valve but it turn out to be the purge valve,to check the purge valve u need to remove it from the intake,then with your mouth blow air into the
valve,place your finger at the bottom of the valve and if you can feel air passing thru, the valve is bad,replace it.