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

[domin8]

What is a TSB? So this new part is going to resolve the issue now? Have you tried it yet?

It solved my problem. TSB = technical service bulletin

 

[Magnumac]

Hey guys, new to the forum here, thought I 'd chime in with my experience with this problem. I drive a lot of dirt and gravel so my 2005 yukon has had this most of its life. sometimes changing the solenoid valve helps but if it doesn't, I have had to take the canister off and beat the crap out of it and blow it out with an air nozzle, in order for it to take fuel. it doesn't make it perfect but seems to help a lot. for me it makes the fuel click off maybe one per fill instead of once every couple of seconds.

 

[Jps777]

Tighten fuel cap

Well ive replaced the canister purge valve and the gas cap and had the code cleared. Drove fine for 2days and code is coming back and message is flashing to tighten gas cap again. Anyone have sugesstions on what this problem might be??? Also i cant pump gas without it cutting off atleast 30 times and taking me 20min to fill up

 

[domin8]

EVAP CVS.

Sent from my myTouch_4G_Slide using Tapatalk

 

[Munsk]

So, I am getting slightly confused here. Do I need a "Canister" or a "Solenoid?"

They seem to have different p/n and I am having trouble finding the canister (p/n 2142149) at any of my local stores.

Someone please 'essplain'

Thanks,
Munsk.

 

[Munsk]

Bueller...Bueller...Bueller...

 

[fire730]

You need the solenoid.

 

[Munsk]

Thanks, But its too late. I bought them both today. I hope to have time to install them Sat.

Thanks.
Munsk.

 

[Travieso]

Munsk who is doing the work for you !

 

[Munsk]

I am. Why? Have some tips?

 

[Munsk]

I replaced the Canister today. Cleared the codes. Check eng light is out.
So far, So Good.
Thanks TYF!!!
Munsk.

I couldn't find the solenoid.

 

[fire730]

I doubt the canister was actually the problem. If the problem still exists it will take a few ignition cycles for it to show the code again.

The solenoid is back in front of the spare. The new one looks nothing like the old one. The old one was a box and the new one is round.

 

[Munsk]

When I got in and test drove it this morn, I hadn't gone 1/4 mile and I got the msg "Tighten Gas Cap" (which I had never gotten before. I drove to the gas station and topped off, about a 1/4 tank, then back home. No msgs.

Then we put about 225 miles on it. Start and stopped multiple times, No msgs yet. I haven't filled the tank again yet, I'm down to about 1/2 right now.
I'm taking it on a trip Memorial Day weekend, about 500 miles.

I guess we will see.

As far as the Solenoid goes, all I saw was a BIG box (size of a shoe box), but it didn't really look like a solenoid. It was above the axle between the Tank and the Spare tire.

Hmmm.

 

[Munsk]

So, my Check Engine Light came back on after about 250 more miles.
I know one of you guys said it would.

So I crawled under there today and took a pic.
This is what I have under there. You can see the Canister, which I already replaced, in the upper left. This GIANT box is almost directly over the rear diff. It has multiple lines going into it, with the fuel line connections, but it does not have any electrical wires going to it.

Sooo, wtf?????

Munsk.

 

[Munsk]

This is the Solenoid that I bought. Supposed to go to an 06 Yukon XL Denali.

 

[Munsk]

Bueller... Bueller... Bueller. Anyone?

 

[domin8]

Evap cvs?

 

[Munsk]

I found the Solenoid that I showed earlier. Its on the Intake.
I was looking near the tank... I was WAY off! I am also wondering if this is going to solve my problem. I'm guessing not.
To date, I have replaced:
The Evap Purge Solenoid
The Evap Canister,
The Fuel Cap.

Time will tell.
Munsk.

 

[rockyrr]

im gettin the same message, did it work??

 

[vargas8184]

Munsk,
I'm new to the forum did those 3 things you replace to work for you

---------- Post added at 01:33 PM ---------- Previous post was at 01:29 PM ----------

I found the Solenoid that I showed earlier. Its on the Intake.
I was looking near the tank... I was WAY off! I am also wondering if this is going to solve my problem. I'm guessing not.
To date, I have replaced:
The Evap Purge Solenoid
The Evap Canister,
The Fuel Cap.

Time will tell.
Munsk.

I'm new to the forum did those 3 things you replaced work for you