gas tank spewing air ?

[kenwin30]

hey guys, got a 04 tahoe, about 230k, went to get gas and took cap off and air is coming out of fill hole on the tank, so much air pressure it wont even take any gas, whats going on?

 

[Donald]

No evap codes?

 

[krismoriah72]

Probably the canister vent valve or purge solenoid or evap vent solenoid. Could be a bad cap as well.

 

[Donald]

No evap codes?