Where is the Vapor Canister Vent Valve/Solenoid located?

Tiny
CADILLACXTS
  • MEMBER
  • 2018 CADILLAC XTS
  • 3.6L
  • V6
  • 2WD
  • AUTOMATIC
  • 86,000 MILES
Hi, I was trying to find the location for a Vapor Canister Vent Valve/Solenoid for the car listed above.
Saturday, July 9th, 2022 AT 10:49 AM

4 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,463 POSTS
It is behind the cover inside the right rear wheel arch mounted on the EVAP canister. To get to it you remove the right rear tire, then pull the push retainers and bolts that hold the liner in place. With it out you will see the pipe that runs from the fuel tank to the EVAP canister. Disconnect it and the vent line and the electrical connector. Then release the tab and you can lower the EVAP can enough to get to the release clips on the solenoid. Replace it and reverse the process to put it back together.
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Saturday, July 9th, 2022 AT 1:38 PM
Tiny
CADILLACXTS
  • MEMBER
  • 2 POSTS
I didn't find it under the right wheel arch. I will check under the other side when I have more time. Thank you. I'll try it out today.
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Sunday, July 10th, 2022 AT 7:21 AM
Tiny
CADILLACXTS
  • MEMBER
  • 2 POSTS
Still couldn't find it?
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Friday, September 1st, 2023 AT 1:12 PM
Tiny
STEVE W.
  • MECHANIC
  • 13,463 POSTS
It is mounted on the canister itself. The OE is replaceable; however they generally don't sell just the solenoid, you instead buy the complete canister. Also, it looks like they updated the service info on it, the canister in the new information is next to the fuel tank. You lower the tank to get to the canister. The earlier info was for the Cts from the looks of it. Don't get many of the XTS in here so didn't question the info. Sorry about the wild goose chase.
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Saturday, September 2nd, 2023 AT 12:11 AM

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