I am in the process of changing out the fuel pump in my 01 tahoe. The pump had the fuel and return line, but no vent line.. the Haynes manual shows a vent line. I'm stumped because there's a pipe for it on the pump, but no line. I'm the 2nd owner, and almost positive no one has worked on this. And I've had a code on and off for the past year for the EVAP system.
It must be related, right?? Thanks for any help you guys can offer.

I am in the process of changing out the fuel pump in my 01 tahoe. The pump had the fuel and return line, but no vent line.. the Haynes manual shows a vent line. I'm stumped because there's a pipe for it on the pump, but no line. I'm the 2nd owner, and almost positive no one has worked on this. And I've had a code on and off for the past year for the EVAP system.
It must be related, right?? Thanks for any help you guys can offer.


go to silverado vent solenoid p0446 : this post has all the info including pictures. by your discription the vent solenoid was removed if so 80.oo cost for new............this part is mounted at canister on tank end..