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  1. Brake_L8

    P0499 - Where's the EVAP solenoid?

    I don't have Quadrasteer - it never came on the Yukon Denali. Only was offered on the Sierra C3, Sierra Denali (03), Silverados and a few Suburbans/Yukons. But, I wanted a truck with Quadrasteer so did some reading on it. Yes, the rear axle is wider which is why you see the rear fender flares...
  2. Brake_L8

    P0499 - Where's the EVAP solenoid?

    Wow, tons of great info here - thank you all so much. I figured out my problem and you'll collectively roll eyes at what caused it - BUT if I have to diagnose later down the road, this thread will be a great resource to save. I use this truck to tow with. When I took it to Road Atlanta in early...
  3. Brake_L8

    Looking to purchase a Yukon/Suburban/Tahoe... Need advice.

    Looks clean! Check for leaks underneath and brake lines for rust.
  4. Brake_L8

    6.0L Valley Cover Gasket - How Hard to DIY?

    No, I don't know if I have the oil cooler or if I have a block off there. The truck is 100% stock - so if all Denalis came with the oil cooler, then I have it.
  5. Brake_L8

    6.0L Valley Cover Gasket - How Hard to DIY?

    Do the oil cooler lines run anywhere near the filter? Pretty sure mine are original at 10 years and 143k.
  6. Brake_L8

    She's changed a lot since I got her!

    It's not my style but damn, definitely a nice improvement from what it was! Had a good chuckle at "Captain Save-a-hoe" :D
  7. Brake_L8

    Looking to purchase a Yukon/Suburban/Tahoe... Need advice.

    I'll be the first to champion the Yukon Denali and/or Escalade. Yes, the Cadillac. Hear me out, I tow with mine (6k lbs, ish) and wanted the best vehicle for that use. Don't care about offroad prowess and likely don't need low range, ever. So with that in mind... The Denali and Escalade have...
  8. Brake_L8

    Leak Help

    Other places to look (I'm dealing with this now, too) are the valley pan gasket and oil pressure sender gasket. The oil filter housing "plate" can be another source of the leak, but that's on the driver's side. Maybe check your oil cooler lines, assuming you have a cooler? I know the Denalis...
  9. Brake_L8

    6.0L Valley Cover Gasket - How Hard to DIY?

    So... it didn't. I did this job because I took the truck in to a local shop as it was leaking a LOT of oil. They claimed I had two leaks - valley pan and oil filter "plate" gasket. I paid them to do the filter plate as they wanted $1400 for the valley pan job. Well, the valley pan was seeping a...
  10. Brake_L8

    Where have you guys mounted your backup camera?

    I have a license plate camera, which is "fine" given it cost all of $10 from Amazon. Great to hook up trailers and parallel park in tighter spots. The first camera I purchased could only be mounted offset and thus wasn't centered, which makes it kind of useless. I kept it though, and was...
  11. Brake_L8

    P0499 - Where's the EVAP solenoid?

    Managed to replace this and not break that plastic hose and clamp setup. Great success! The CEL comes back on after two ignition cycles though. Sounds like the other Evap solenoid (near the throttle body underhood) can also throw the same code? I figure I ought to replace that one as well...
  12. Brake_L8

    6.0L Valley Cover Gasket - How Hard to DIY?

    Got around to doing this job yesterday - check out the sludge on the valley cover! Needed a stepstool to get leverage to remove the cover (it was kinda stuck on thanks to said sludge) so the racecar lent its bumper to the cause: I'm now facing a fun quirk - the drive to work this morning...
  13. Brake_L8

    P0499 - Where's the EVAP solenoid?

    Cool. And seems if I do break one, I can use some 5/8 tubing and hose clamps to replace the old hose(s).
  14. Brake_L8

    P0499 - Where's the EVAP solenoid?

    Based on the part number that everyone bought when getting the code, I'm replacing the "vent valve solenoid" and elected to get another of the "old style" on the right here: So it sounds like that's above the rear diff. I'll take a look but should be easy to replace. Thanks!
  15. Brake_L8

    Who has the highest miles thread.

    Damn, you all make mine look like a baby! 2005 Denali with 143k.
  16. Brake_L8

    P0499 - Where's the EVAP solenoid?

    Got a CEL and discovered it's for P0499, the EVAP solenoid. I can't seem to find a definitive answer as to where the part is located on the Tahoe/Suburban/Yukon. Seems like it can be in a few different places on the pickups. I ordered the new part ($20 from Amazon, thank you Prime shipping)...
  17. Brake_L8

    6.0L Valley Cover Gasket - How Hard to DIY?

    Sounds about right. I got all the parts and am waiting on a day with decent weather. Was in the 40s this weekend near DC - no sense doing the job today when it'll be 60s right after Christmas.
  18. Brake_L8

    "Torque" Android app can't connect to ECU

    Update - the Bafx adapter worked on the first try. Amazing. I think I have the paid version of Torque, but either should work for checking and clearing the CEL.
  19. Brake_L8

    6.0L Valley Cover Gasket - How Hard to DIY?

    Excellent, I may give the tool a shot or maybe just the ziptie method. Thanks for the tips! I guess I'll order the valley cover gasket, intake manifold gaskets, and what else... knock sensors?
  20. Brake_L8

    6.0L Valley Cover Gasket - How Hard to DIY?

    Gotcha, that works. Any special tool(s) I need to pull the lines?
  21. Brake_L8

    6.0L Valley Cover Gasket - How Hard to DIY?

    Do you have to completely disconnect the fuel rail? On the BMWs, you can remove it from the manifold and leave the lines hooked up - there's enough play that the whole rail can be set off to the side and the manifold snaked out around it. I'd prefer to not disconnect the lines but I certainly can.
  22. Brake_L8

    6.0L Valley Cover Gasket - How Hard to DIY?

    Yeah, hence why I declined the repair. I need to pop that inspection cap off of the bellhousing this weekend and check the rear main. Labor around the DC area is expensive ($100/hr minimum) so I like to DIY what I can... but the truck doesn't fit in my garage and my lovely HOA would not be...
  23. Brake_L8

    6.0L Valley Cover Gasket - How Hard to DIY?

    I've had an oil leak on my Denali for a while now, and have chased it down over the last ~6 months, mostly thanks to a few shops (track car has taken all of my wrenching time). The shops have replaced the valve cover gaskets and the oil filter "adapter plate" gasket. The leak has slowed but is...
  24. Brake_L8

    "Torque" Android app can't connect to ECU

    Ah. I've had the adapter for nearly a year now so I doubt I can return it. I'll check out the Bafx model though.
  25. Brake_L8

    "Torque" Android app can't connect to ECU

    I've searched and searched and can't find anything conclusive here. I use a Bluetooth "ELM 327" OBD II code reader, paired to an Android tablet running the "Torque" app. It works really well to display live data from the ECU as well as read any codes stored for the Check Engine light. The...

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