Question about 2004 Chevrolet Avalanche

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I have a 2004 Avalanche 1500. I have had lots of trouble filling it with gas the past two years. I have to let the gas trickle in order to fill up. Also I have had trouble with the truck not idling right and running really rough. Every time they change the fuel pump and that does not fix the problem. Then the change the O2 sensor and that seems to fix it. But 10-12 months later it starts all over again. Any ideas on what could be causing the constant sensor failures?

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I had the same issue. After replacing several items on the truck and still having the same problem, the dealer replaced the cannister. Bingo, problem fixed and I can now fill up my truck.

Posted on Sep 01, 2010

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Try replacing the cervo... it may be the cause of the constant tripping... its gonna be a big help for you

Posted on Feb 02, 2010

  • dj_relly999
    dj_relly999 Feb 02, 2010

    oh im sorry its servo.... its like the brain of the idling.


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