2002 GMC SIERRA FUEL VAPOR CANISTER

  • Tiny
  • kthac
  • 2002 GMC Sierra

Engine Mechanical problem
2002 GMC Sierra V8 Two Wheel Drive Automatic 65000 miles

My truck intermittently stalls and sputters, other times runs great. It was determined that the fuel vapor canister was full of fuel and that the vent valve was bad. Ocassionally at startup it would belch fuel on the ground. Shop says that once canister has had fuel inside it is no good, true. Unknown how fuel got inside. Fuel pump was just replaced by same people. I'm tying to figure out how to proceed. Thanks, Kevin

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Tuesday, April 13th, 2010 AT 2:14 PM

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  • Tiny
  • merlin2021
  • Expert
  • 17,587 posts

True! Charcoal canister is full, once soaked, it must be replaced. Vent valve went bad first, allowing fuel to enter instead of fumes.

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Tuesday, April 13th, 2010 AT 2:20 PM

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