Getting message?:"Tighten Gas Cap" or are you Unable to fill your tank? ! Look here !

[VICDBOSS]

You've got at 2000-2006 nbs tahoe/Yukon/suburban ... With only 15k miles on it?! Damn....

Lol. No. I've got a 2015. Just realized what section this thread is posted. Still a rookie


Sent from my iPhone using Tapatalk

 

[Joshuasvt]

Replaced mine a couple weeks ago. All is working well now. I got curious and took the old one apart. It was full of dirt.

 

[73impala]

Just replaced the one on my GF tahoe and still having a slow tank fill up, takes about 20 min to fill up

 

[thnks4dhlp]

o5 escalade
changed the canister and the purge valve
still having trouble getting gas
could it have been a faulty canister?

 

[thnks4dhlp]

o5 escalade
changed the canister and the purge valve
still having trouble getting gas
could it have been a faulty canister?

 

[thnks4dhlp]

I had this issue for a little while and I decided to consolidate all the info into 1 Post and a picture of what you need to replace it. If you have any questions just ask in this thread:

What you need:
AC DELCO 214-2149 [CANISTER PURGE SOLENOID VALVE]
-Brand new AC DELCO component with correct connector
-Replaces dealer part numbers: 25932571, 214-2149
-Picture:

Quick synopsis:

-It started off as 'Tighten Gas Cap" on the DIC, As the solenoid valve was stuck open and would vent the tank so the computer thought the gas cap was loose. I got the solenoid unstuck but later it failed in the close position and would not vent when filling the tank. I too tried everything including turning the nozzle completely upside down but the nozzle would just click off. The day after I replaced it I was able to fill the tank as fast as the pump would go and the engine light went out a day or so later, Have not had the problem ever since.

****UPDATE****
-Problem seems to be solved, I replaced the evap solenoid the day before yesterday and now I can fill the tank as fast as the pump will go. It only cost me $28, The engine light has not shut off yet but that should resolve itself in a few days after I drive it around a bit.

-It connects to the charcoal canister under the rear by the gas tank, A lot of people refer to it as the evap valve or solenoid.
-You have to crawl under but its just above and infront of the rear axel.
-A screw driver to pry up on the tab in the middle of the bracket and the same with tabs on the hose to release it. Then slide the new part back in the bracket and bend the tab back to hold it and make the connections.
-About 15 minutes of your time and no gas leaking, Also easier to get to if you drop the spare tire.

Hope this helps everyone!

**********New updated part info*************
GM understands that this is an issue and this part has been updated with a new one that has hoses and moves the filter, but the new part costs $250-300 and is harder to install, and if you get this part it will last another 4-6 years (Which is when I don't plan on having same Tahoe)

-Anthony

 

[fire730]

Are you still getting a CEL related to the evap system or just the refueling issue?

 

[DonnieBrasco]

I don't really have trouble filling my tank up. But it lets out a massive vacuum pressure release when I take the gas cap off. And my CEL is on. I was already in need of replacing my fuel filter. I'm thinking I may need to replace this guy as well. Thoughts?

 

[fire730]

Mine does that and I don't have a check engine light on. My evap system works fine.

Find out what the check engine light represents before you just change parts.

 

[408sjtahoe]

New to the site but glad i found this topic, so my wife got the gas cap message on her 08 TAHOE, by googleing this issue i came across this siteand found some good info.

So i actually changed out the canister saturday, reset the cp and was hoping the message would not come back on along with the engine light, so this morning she texts me and says it came back! Dang it!

Should i also change the evap solenoid that sits on top of the manifold that othere seemed to have changed also? Please let me know, thanks/

 

[thnks4dhlp]

Are you still getting a CEL related to the evap system or just the refueling issue?

Still pumping gas at a very slow pace
Pump shuts off like if it is full
Check engine light came back on a month after changing both the canister and the purge solenoid
Displays flashes tighten gas cap every now and then
Gas smell in the cabin after pumping 10 to 15 gallons
No leaks

 

[thnks4dhlp]

Oh yeah
Gargling sound coming out of the tank while pumping gas

 

[thnks4dhlp]

Yes I've changed the canister under the rear by the spare and the valve under the hood
Still having trouble

 

[408sjtahoe]

canister replaced. been bout 3 weeks and now the wife says that after she pumps gas, the tahoe has a issue like it doesn't want to start for about a couple seconds.

any one else have this issue?

plus engine light came back on!! please help!!!

 

[fire730]

What is the code?
Without reading your other posts it sounds like the purge solenoid on the intake is stuck open. It cause the gas fumes to build up in the intake when refueling. It's supposed to close to avoid that issue. For now tell her to hold the gas to the floor for a second. I was told it goes into a "clear flood " mode and shuts off the injectors and the truck starts off of the fumes.

 

[408sjtahoe]

What is the code?
Without reading your other posts it sounds like the purge solenoid on the intake is stuck open. It cause the gas fumes to build up in the intake when refueling. It's supposed to close to avoid that issue. For now tell her to hold the gas to the floor for a second. I was told it goes into a "clear flood " mode and shuts off the injectors and the truck starts off of the fumes.

I don't have the code, but from reading this topic alot of it is the same problems were having on ours. I did change the canister and the purge solenoid. She put gas this morning at it started up as normal, guess we'll give it some time and see it the light comes on or if it does that start lag again.

 

[secakc33]

I changed the evap solenoid, light came back on and still hard to pump gas. Then I changed the purge valve on top of manifold, still have same symptoms. What do you suggest I try next? Canister? Pressure sensor on top of gas tank? Just take it to the shop?

 

[VICDBOSS]

I changed the evap solenoid, light came back on and still hard to pump gas. Then I changed the purge valve on top of manifold, still have same symptoms. What do you suggest I try next? Canister? Pressure sensor on top of gas tank? Just take it to the shop?

I'd do the canister too and see. That's what I did on my older suburban and the light never came back.


Sent from my iPhone using Tapatalk

 

[Brains646]

I've changed out my vapor canister vent valve and my evap solenoid on the intake. Is this a different part?

 

[secakc33]

Yes, this is the third item. The actuall canister that holds the charcoal. it is a little less than a foot long and a foot wide.