2000 Chevy Silverado Gas tank is crushing

2000 CHEVROLET SILVERADO
230,000 MILES • V8 • 4WD • AUTOMATIC
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STUART HUTCHISON
  • MEMBER
  • 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 3:00 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
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 10:37 AM
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STUART HUTCHISON
  • MEMBER
  • 3 POSTS
Where is the vacuum relief valve located and how does it work
Aug 3, 2010 at 10:09 AM
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MERLIN2021
  • ✓Experienced Mechanic
  • 17,250 POSTS
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 3:01 PM
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