Code 0453 now after 0446

[dye4metal]

alright so i got rid of my 0446 by replacing the tank pressure sensor yesterday and now its throwing a 0453 code. it says in my book thats the tank pressure is too high? im getting sick of this. help would be appreciated

its a 5.3 flex

 

[dye4metal]

i really dont have a clue on what it could be

 

[Greg2002]

Did you replace your fuel cap

When you fill up can you hear the pressure release when you undo the cap

 

[dye4metal]

yea i can hear the pressure relieving. does that mean the cap is bad?

 

[Greg2002]

i would replace the cap

 

[dye4metal]

yeaa, im gonna order one tonight. i opened up another friends 02 tahoe and their cap never relieved pressure at all.