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  1. OEM Issues
    I've been getting a P0440 code that won't go away. I have been chasing the usual suspects... I bought a new gas cap, I checked the evap vent valve in the back near the gas tank... it checked out fine (It activates and stops the flow of air/gas). I also checked the Purge Valve on the driver side...
    crack filler neck gas tank leak p0440
  2. Introductions
    Hey folks I thought I'd start here and introduce myself. My name is Talon. I'm a bit of a motor head enthusiast and am looking for getting connected and getting advice from a community of like minded DIYers. I just bought a 2003 Chevy Trailblazer as a bit of A to B guy and to have something...
    filler neck gas tank p0440
  3. The "How-To" and DIY Section
    I finally had to pry open the wallet and buy a new filler neck/tube since mine was rotted and causing all kinds of trouble codes. I got the new part, and there is a 5/16 vent tube coming off the main neck. The old filler tube doesn't have this vent. It seems the models prior to 2004 do not have...
    2004 tb filler neck fuel neck
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