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  1. M

    Loss of power was actually an anti-lock brake issue.

    I thought I would post this just in case it would help someone else out. I see others have had similar issues with a variety of causes. Several months ago, I pulled away from a stop sign and my truck just took a nosedive like I had lost all power. I could feather the throttle and eventually get...
  2. M

    Air Ride Z55 shock part number questions

    I have a 2006 Yukon Denali and have managed to squeeze about 240,000 miles out of the original shocks. Rear air shocks have been leaking and finally the pump stopped working. I have been planning on replacing this for a while and picked up one original shock (it was too good a deal to pass on)...
  3. M

    Injector o-ring differences

    I have the intake off the engine I am getting ready to put in my Denali. I figured I would take the injectors out, clean them, and put new o-rings on them. I got an ACDelco kit that came with all blue o-rings and the part number is listed as correct although it as since been superseded by a...
  4. M

    Does a Denali AWD have G80?

    I have a 2006 Yukon Denali. I have seen a bunch of conflicting info on the Denali AWD systems. I was originally under the impression that they do not have a true AWD. It is basically two "one wheel wonder" axles tied together by a transfer case that does the "slipping" But I have seen claims...
  5. M

    Is this a Suncoast hood?

    I came across a hood I like but can't find any solid info on it. I believe it is a Suncoast but not sure. It may have come as a kit with the a special air filter and box. So far it looks like Suncoast sold out to the employees back around 2016 or 2017. However, the website and Facebook stuff is...
  6. M

    Shorty header questions

    I have to replace the motor on my '06 Denali and figured since it was coming out anyway it might be a good time to put some headers on. Although I would prefer long tubes, I'm thinking of shorties for now just to avoid the fitment issues. I hear and read some don't fit AWD/4WD very well, there...
  7. M

    Silverado hood on a Denali - not a HD conversion

    I want to find out if a Silverado hood could be modified to fit on my Denali. I have been wanting to do something different with my '06 Denali. I'm big into Oldsmobiles and have '70 Rallye 350 with the Outside Air Induction hood. I have been tinkering with the idea of doing something like that...
  8. M

    Master cylinder to proportioning valve hoses

    Came home tonight and was backing into my driveway when I decided to park it and have my wife sit in the driver's seat and push the brake pedal so I could check out the brightness of the new LED bulbs I installed during the day. She yells something about the pedal going to the floor. Sure enough...
  9. M

    Has anybody seen a woodgrain rear control unit like this?

    This is kind of a useless question but has anyone seen a unit like pictured below? It was in a 2006 Denali being sold locally. I have never seen one with woodgrain that matches the dash before. Mine is plain black as have been all the others I have seen. Just curious.
  10. M

    Suggestions on cleaning inside of intake manifold

    I'm preparing an engine to replace the one in my '06 Denali. I have the intake manifold off and found the usual oil and gunk inside. Has anyone found a successful method for removing the burnt oil or carbon or whatever it is from the intake runners? Obviously, I can't use metal scrapers on a...
  11. M

    Compression reading question

    I am looking at a used replacement engine for my '06 Denali. I posted before that my truck lost pressure with less than 170,000 miles and I got the lab report back on the oil which seems to indicate I have a bearing issue. Ideally I have been looking for something from a '05-'06 with less than...
  12. M

    Has anyone tried the cheap Autoride replacement shocks?

    I think after 170,000 miles the Autoride rear shocks have finally worn out. The pump is working but the bags don't hold air. I'm going to do a little diagnostic work on this but wanted to research shocks in the meantime. My '06 has the 20" rims which use a specific shock. I found one NOS one...
  13. M

    2006 Hydroboost question.

    The seam between my Hydroboost unit and the master cylinder on my '06 Denali has been leaking for a while and is getting worse. I have also noticed a small leak at the rod going into the rear end of the booster. Rather than just do the seals I think it makes more sense to replace the whole unit...
  14. M

    Evap hose and P0442

    While I had my engine cover off to replace my oil pressure sensor I noticed this hole in this hard plastic line (where my finger is pointing). The engine cover rubs on that spot. Is this an EVAP system hose and could it be responsible for the occasional P0442 code I have been getting?
  15. M

    Heater core?

    A few months back I posted on a no heat issue I was having that eventually got better. I was not sure how it got better but it started working after I drained some coolant out and slowly refilled. The truck previously had leaks at the water pump, radiator, and quick connector near the firewall...
  16. M

    AWD diff questions

    I am dropping the oil pan on my '06 Denali. I thought I would replace the leaking right front seal since I have to lower the right side of the diff anyway. After looking it over I came up with some questions: Videos I have seen use anaerobic sealant between the axle housing and the main...
  17. M

    Oil pressure dropping

    I've read all the posts regarding oil pressure drops but before I go ripping things apart I thought I would verify some of my conclusions. A couple of weeks back I noticed my oil pressure had dropped from around 40 psi at idle when warm to 30 psi. The next day I had around 20 psi at idle and...
  18. M

    Input regarding Denali radiator

    This last fall I discovered a crack in the radiator on my 2006 Yukon Denali. I also found the pump leaking so I replaced that too. The previous owner was not using coolant, just water, so I had not been smelling the leaks. Draining and replacing the water with coolant combined with the dropping...
  19. M

    Key fob remotes - info and questions

    I have question regarding the remotes used on my '06 Yukon Denali along with a couple of observations. My truck came with one aftermarket remote. I immediately ordered another one so I had a back up. The first problem was that the batteries only lasted a few weeks in one remote and the other...
  20. M

    Gauge needle starting point

    I am going to need to put new lights in my dash as half of them are out. When I take the cluster apart I want to be sure I put the needles back on correctly and not just where they started at when I took it apart. I always wondered about the needle locations particularly on the temp gauge...
  21. M

    Front end thumping sound

    So, the day after I get my heat working again and I start hearing a thumping sound from the front end of my '06 Denali. If this sounds familiar to anyone please feel free to give me some input. Here are are the symptoms: The thumping seems to match the tire/axle speed. It comes in at around 15...
  22. M

    Low coolant warning and reservoir questions.

    I purchased a 2006 Yukon Denali this summer and have been having a host of issues. Right now I'm working on a no heat issue that I'm worried is a head gasket issue. I'm going to try to tackle one aspect at a time so as not to get too far off track. Does anybody with a 2006 Yukon know for sure...
  23. M

    Low Coolant warning and reservoir question

    I purchased a 2006 Yukon Denali this summer and have been having a host of issues. Right now I'm working on a no heat issue that I'm worried is a head gasket issue. I'm going to try to tackle one aspect at a time so as not to get too far off track. Does anybody with a 2006 Yukon know for sure...
  24. M

    New to the forum Yukon Guy

    Purchased a 2006 Yukon Denali XL this summer. I wanted one years ago when my daughter was in high school but showed restraint and got a Olds Silhouette AWD mini van instead. We thought it was more practical. It was actually a pretty nice vehicle but I always had that desire for the Yukon. Now...

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