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p0455
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  1. General
    Who wants to plaaayyyy... FIX!!! MY!!! CAR!!!! So I've failed emissions and have a p0455 (large evap leak) code which I'm still investigating. I replaced the vapor vent valve purge solenoid canister(the thing under the vehicle in the rear) and used an OBD scanner to clear the check engine...
  2. Northeast
    ok, here goes . I've had my SES light on for over a year. It switches between p442 or 455. I tried everything I could find posted here.", so Ibrought it in to a dealer. After 5 hrs they told me there's nothing wrong with the vehicle, that the gas cap probably wasn't seated right. The same...
  3. General
    2005 Trailblazer 4.2L I6: Recently purchased this vehicle and had a new fuel pump installed since the fuel gauge was not working. Immediately afterwards, I was getting the P0455 code. Tried the new gas cap, then had them check their connections again, but still getting the code. Rather than...
  4. OEM Issues
    I am thankful for all the folks in this forum, I have solved a few of my issues already and I am hoping with your help I can solve these last problems. Symptoms: It does not seem to matter cold or warm start, when I slightly press the gas pedal sometimes the engine will slightly stall then...
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