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EVAP purge solenoid

Tiny
DENALI24
  • MEMBER
  • 2005 GMC YUKON
  • 6.0L
  • V8
  • 4WD
  • AUTOMATIC
  • 256,439 MILES
I am getting a check engine light on I checked it with an OBD device and it said I have a large leak in the line. Do I have to replace the entire unit or is it possibly a leak in the plastic lines?
Monday, June 22nd, 2020 AT 8:35 PM

11 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi,

If it is a large leak, it should be somewhat easy to find. Make sure the fuel cap is good and tight, make sure none of the hoses have come off the EVAP system under the hood and at the EVAP canister near the fuel tank. Also, make sure there are no leaks between the filler tube and fuel tank.

I attached pics to help you identify what I am referring to. Check these things out and let me know if you find a problem. Also, please provide the code you retrieved. It may help me pinpoint the issue.

Let me know.
Joe
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Monday, June 22nd, 2020 AT 9:09 PM
Tiny
DENALI24
  • MEMBER
  • 15 POSTS
I believe it was like p40535. I will get the scanner tomorrow and tell you for sure.
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Monday, June 22nd, 2020 AT 9:16 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi,

That sounds like a plan. The code will be a letter (P) and 4 digits. For example, P0301.
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Monday, June 22nd, 2020 AT 10:39 PM
Tiny
DENALI24
  • MEMBER
  • 15 POSTS
Okay, I wasn't able to go to AutoZone for the scanner but I did end up going to the junkyard and got a new oil pan because the one I have right now is cracked but upon further inspection I noticed that.
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Tuesday, June 23rd, 2020 AT 5:23 PM
Tiny
DENALI24
  • MEMBER
  • 15 POSTS
The factory bolts have a pointed tip on them and the new bolts that I purchase online are flat-headed. I was just wondering is that going to cause a difference in the performance or am I going to need to use Loctite or something like that if I use the new bolts?
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Tuesday, June 23rd, 2020 AT 5:24 PM
Tiny
DENALI24
  • MEMBER
  • 15 POSTS
Well, apparently I ordered the wrong bolts. Will the old bolts still work if I'm doing an oil pan change?
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Tuesday, June 23rd, 2020 AT 5:38 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi,

Yes, you can reuse the old ones. I attached the torque specs in case you need them.

Let me know if I can help.
Joe
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+1
Tuesday, June 23rd, 2020 AT 8:21 PM
Tiny
DENALI24
  • MEMBER
  • 15 POSTS
I appreciate your help and this website.
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Tuesday, June 23rd, 2020 AT 9:04 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
You are very welcome. Let me know if I can help.

I hope all is going well with the vehicle. Let me know the results.

Take care,
Joe
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Wednesday, June 24th, 2020 AT 8:23 PM
Tiny
DENALI24
  • MEMBER
  • 15 POSTS
Hey, I've not been on for a while but I have a new problem now. I went to turn on my truck after already having it started and it won't crank over it doesn't even sound like the starter is engaging but all of the fuses in the box underneath the hood are clicking like they're supposed to. All the lights come on everything sounds normal except for the fact that when I turn the key nothing happens and for some odd reason the stability control it's saying that it's off or disabled.
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Friday, July 3rd, 2020 AT 9:16 PM
Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

Sorry, you can't attach to an old question you've asked prior but instead you have to start a new question complete with your vehicles info. Here is the link:

https://www.2carpros.com/questions/new

Hope this helps and thanks again for using 2CarPros.
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Friday, July 3rd, 2020 AT 9:47 PM

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