2002 GMC Sierra fuel vapor canister

2002 GMC SIERRA
65,000 MILES • V8 • 2WD • AUTOMATIC
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KTHAC
  • MEMBER
  • 1 POST
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
Apr 13, 2010 at 2:14 PM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
True! Charcoal canister is full, once soaked, it must be replaced. Vent valve went bad first, allowing fuel to enter instead of fumes.
Apr 13, 2010 at 2:20 PM
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