2000 Chevy Silverado Gas tank is crushing

2000 CHEVROLET SILVERADO
230,000 MILES • V8 • 4WD • AUTOMATIC
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STUART HUTCHISON
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  • 3 POSTS
I have replaced the tank after a leak started near the seam. after about a month the new tank started leaking. I took it to a mechanic and he said the tank was crushed and asumed it had to much vaccum, but wasn't exactley sure what to do to fix the poblem.
Aug 1, 2010 at 10:00 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Hi Stuart Hutchison, Welcome to 2carpros and TY for the donation

There's two things that will cause the fuel tank to collasped/deformed/crushed is a wrong gas cap and the vacuum relief valve
Aug 1, 2010 at 5:37 PM
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STUART HUTCHISON
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  • 3 POSTS
Where is the vacuum relief valve located and how does it work
Aug 3, 2010 at 5:09 PM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
Scan for codes, if the vent valve is stuck a code should be set. Also check the fuses under the hood, there are fuses for EVAP purge and vent solenoids. Testing these requires a GM Tech II scan tool to activate the solenoids to test them..


https://images.2carpros.com/forum/automotive_pictures/62217_Evap_Locations_1.jpg

Aug 6, 2010 at 10:01 PM
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