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    Is this oil pressure normal?

    Thanks for all the replies. I finally ended up taking it into a shop. They did some analysis and confirmed the sensor is ok, and that mine doesn't have a screen. At this point I strongly suggested they simply replace the o-ring, but the guy looked at me like I was crazy. He told me he was...
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    Is this oil pressure normal?

    07 Yukon Denali 157k miles When warm and at idle, pressure drops pretty low. Sometimes when I get off the highway the traction control / stabilitrac error message comes on, then if I get back up to speed it often goes away. I've seen people recommend changing out the oil pickup o ring. Could...
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    07 Denali: Large Roadtrip Upcoming. Advice?

    We are about 2300 miles into the trip, and so far it's been good. The transmission temps have only gotten above 200 once which I find incredible. It was the first climb over Snoqualmie Pass in 95 degree temps that did it. Since then it has remained cool. The cooler I installed was the Derale...
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    07 Denali: Large Roadtrip Upcoming. Advice?

    We are soon going to be taking our 07 Denali on a large, 4000 mile road trip. She has 130k miles and I'll be pulling a 6500 lb trailer. Here's what I've done so far: 1. Replaced rear shocks, and compressor 2. Installed rear helper air bags 3. Installed secondary transmission cooler 4. Oil...
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    Need help with squating on a 2008 XL Denali's rear while towing

    Hi, did you ever figure out why your air lift kit didn't fit? I'm having the same exact issue on my 07 Yukon Denali. I was able to get the bags inserted, lines run etc. However, when I fill them up they don't fully expand. It's as if they are too big for the springs. If you check out air lifts...
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    Is my air ride bad?

    Ok, found the fuse. It seems fine so I suspect both my shocks and compressor need replacing. Are the Arnott shocks good enough or do I need Acdelco? Are there any options that might actually improve my payload capacity? Sent from my Robin using Tapatalk
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    Is my air ride bad?

    Could it be something other than fuse 58? I couldn't seem to find that fuse in my panel. Sent from my Robin using Tapatalk
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    Is my air ride bad?

    I'm a little confused. I just picked up a used 07 Denali and I've never heard the compressor kick on even with a heavy trailer attached. I pulled air hose out of one of the rear shocks expecting some air to come out but I heard nothing. If the air ride wasn't working, shouldn't I be seeing some...
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    Trouble Shifting in Tow/Haul mode

    Well, the shop just let me know they've "fixed it" by simply replacing the brake sensor. They are claiming that when moving from 3->4 there was something telling the computer that the break was being applied which explains why it attempted to downshift. I'm skeptical to say the least. If this...
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    Trouble Shifting in Tow/Haul mode

    Just a few more details as I took it out on the highway again. When in drive + Tow/Haul: It shifts great from 1 -> 2 -> 3. At about 3000 RPM's it shifts immediately into 2nd which spikes the RPM's up to over 5000. At this point I turn off tow/haul and it returns to normal. Repeating that same...
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    Trouble Shifting in Tow/Haul mode

    So I'm having this strange issue on my 07 Yukon Denali that only seems to happen when in Tow/Haul mode. First to Second to Third all seems to work as expected. However, once I try to get up to speed it just won't shift into 4th. My RPM's will get up to 5000 or so, at which point if I back off...
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    Help! 07 Yukon died on side of road!

    Have you also replaced your camshaft position sensor? I'm thinking that might also play a role here right?
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    Help! 07 Yukon died on side of road!

    I've been doing some experimenting on the stall issue the last few days and although it certainly may have been vapor lock, I actually think mixup52 may be right about the worn cam bearings / oil viscosity. Even without the trailer attached and temps not very hot, I've been running up and down...
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    Help! 07 Yukon died on side of road!

    Overdrive is off in either case so long as tow haul is turned on right? In my case tow haul in regular drive was causing issues. I was having trouble getting it to switch into 4th gear so my rpms were near 5000. Is that normal? Tow haul + M was working fantastic. At about 3k rpms I'd simply...
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    Help! 07 Yukon died on side of road!

    I was, but I was in drive, not manually selecting gears. For me, that just wasn't good enough. Sent from my Robin using Tapatalk
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    Help! 07 Yukon died on side of road!

    Do you think I need an entire quart of the Lucas of can I just add a small bottle without draining any oil? I just replaced the oil a few weeks ago. Sent from my Robin using Tapatalk
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    Help! 07 Yukon died on side of road!

    Yep. 07 Denali 6.2. just a quick update. Not only did I make it over the pass, I did so with ease. The trans temps were rock solid at around 160 the entire time! It maxed out at 170 just as I crested. Why so much better this time? It seems the combination of tow haul mode plus manually...
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    Help! 07 Yukon died on side of road!

    Alright guys my driver never showed so I hooked the trailer back up and I'm just about to hit Snoqualmie Pass. If you don't hear from me again check the Seattle local news for a devastating RV crash over the mountain! Sent from my Robin using Tapatalk
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    Help! 07 Yukon died on side of road!

    Wow, that thing is tiny. So here is what I decided to do... I'm just not risking that pass until I fully understand what's wrong. I'm having someone else pull the trailer home and my poor Yukon will have to watch the big boy truck pull it with ease! When I get home I'll try insulating the fuel...
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    Help! 07 Yukon died on side of road!

    You don't think the stock transmission cooler in the Denali is good enough? Sent from my Robin using Tapatalk
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    Help! 07 Yukon died on side of road!

    fuel pump pressure is good. They think I'm crazy and nothing is wrong. :( Today is going to be even hotter than yesterday, into the 90's and the only thing between me and home is Snoqualmie Pass. Sigh...
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    Help! 07 Yukon died on side of road!

    As you might expect they took it for a test drive and everything was perfect they have no idea what is wrong. I told them to at least check the fuel pump pressure. Any other recommendations or should I just roll the dice and hope it doesn't stall again? Sent from my Robin using Tapatalk
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    Help! 07 Yukon died on side of road!

    Interesting. What are people doing to prevent this from happening in the first place? In my case it only happened after I pulled off the freeway and pulled up to a stop light, but if it is what you are expecting couldn't it also happen while descending a mountain pass? I'm getting a little...
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    Help! 07 Yukon died on side of road!

    I was towing a 6000 travel trailer and the transmission was getting pretty hot, around 215 degrees. It was a hot day so I decided to pull over and check things out. When I pulled up to the stop light it just died. It turns over fine but won't start. Every once and awhile I'll hear a fire but it...
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    Recommendations on Travel Trailer Weight?

    Thanks for the reply. I guess you're probably right that technically I could pull any one of those, but I also know that a 116" wheel base could be tricky with sway if I'm pulling a 30' sail behind me. I guess this is just one of those things you don't know until you actually get out there and...

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