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  1. lbenson

    2016 Yukon hesitation on acceleration - no codes

    Would start with plugs and wires.. replaced them at 175k on my last Yukon (15 with 6.2) and it made it much smoother even at idle. If they hadn't been replaced at the recommended interval (think 97.5k) they could be the culprit. Pretty cheap fix and if it doesn't fix it at least you got new...
  2. lbenson

    New member first post. Just purchased 2020 Tahoe premier .. does anyone recommend mid grade or higher octane fuel for a 6.2 liter?

    I always use highest at the pump.. 91, 92, or 93 depending on the station. Says to use minimum 91 on the inside of the gas cap. Worth it in my eyes for the longevity of the engine and the better performance (power and fuel economy). If no ethanol is available I always use that too.. have found...
  3. lbenson

    2015 Yukon XL Denali service stabilitrak P182B

    If you have the 8 speed, did you have the fluid upgraded to the one from the service bulletin (I'll have to lookup the number on it).
  4. lbenson

    2015 Yukon XL Denali service stabilitrak P182B

    They may be right with the transmission needing to be replaced. 150k miles is pretty good. My 2015 Denali's 8 speed failed at 175k. Leading up to that it had intermediate issues that were inconsistent. I remember it did go into limp mode randomly a couple times. Then it would be fine for a...
  5. lbenson

    Who has had issues with serpentine belts?

    I have 83k miles on my 2018 Denali. Started in past couple weeks to get a constant squeaky sound that gets louder as I accelerate. Can hear it outside but much more noticeable in parking ramps where noise can reflect. Cannot really hear in cab unless music off, but can hear with windows down...
  6. lbenson

    How do you guys like the 15-20's?

    Love my 2018 Denali. The 6.2L has great power for the size of the truck and can be fun to drive if I don't feel like being nice to it. Tows my 24' Wake Boat with no issues (6000lb boat + close to another 2000lb from trailer). I second everyone that said get a later model year. Had both a 2015...
  7. lbenson

    2018 Yukon/New Member with Yukon Question

    If you can post a picture of the leaking lines I or another member may be able to identify them. The engine oil cooler lines and the transmission cooler lines are known for leaking on these trucks. I just replaced my engine oil cooler lines. They are a little closer to the drivers side in...
  8. lbenson

    2018 6.2L, UPDATE: Lifter failure at 80k miles

    I would agree however the powertrain warranty specifically lists everything included (it's past the factory one, I have an unlimited time/mileage one from dealer but only includes all internally lubricated components and anything else listed on the warranty.) I have a great relationship with my...
  9. lbenson

    2018 6.2L, UPDATE: Lifter failure at 80k miles

    After sitting there for 2 weeks the tech finally pulled lifters to check and they were all perfectly normal. Ended up being two loose rocker arms on cylinders 3 and 5... Ticking noise is no more. All the pushrods were still straight and the rocker arms were torqued back to spec. No clue how...
  10. lbenson

    Looking to buy

    6 or 8 speed in the 2015 Denali? They did a 2015.5 model halfway thru and upgraded the Denalis from 6 to 8 speeds. If still original trans with the 8 speed watch out... blew mine at 175k even after having the TSB for upgraded fluid performed 45,000 miles before it blew up. Had both an SLT and...
  11. lbenson

    2017 4WD Tahoe Premier ticking noise

    I have the same ticking noise in my 6.2L on my Denali. I always have the music on and almost never hear it. And yes, it sounds like its more on the drivers side, coming from down by your feet. I don't think there's anything harmful from the noise other than being annoyed by it. Since I usually...
  12. lbenson

    New 2018 Yukon XL Denali Owner

    Looks like a great truck. I have a 2018 with the 6.2L and 10 speed and the 10 speed is a huge upgrade from the 8 speed in my 2015 (that eventually killed itself). Mine makes the ticking noise too but I usually drive alone and have the music loud enough to not hear it. Doesn't bother me enough...
  13. lbenson

    2018 Yukon/Need tire and shock recommendations

    I'm surprised it came with Michelin's on the factory 20"s. Thought they had thrown the junk Continentals on all the 20" rims. My 2018 Denali had the Continentals from the factory and we replaced at 25k as they rode like crap and had terrible tread patterns. Michelin Defenders are hands down the...
  14. lbenson

    Least problems? 18+ with 5.3 or 6.2?

    I got 175k out of the 8L90 in my 2015 Yukon with the 6.2L. Now have a 2018 with the 6.2L and the 10 speed with 82k miles and no issues with the transmission. Engine had a little piston slap that was fixed by having two bolts tightened in it at 80k. I would avoid anything with the 6 speed (2016+...
  15. lbenson

    Continental Cross Contact Tires

    It’s the same tires that came stock on my 2018 Yukon Denali with 20s, they sucked. We replaced them after a year at 25k miles. Tread was left on them but they have crap channels for rain on the highway and were awful in snow. Same thing with the 15 XL we had before. Replaced before 30k miles...
  16. lbenson

    2017 Tahoe Premier/Getting GM to warranty something that is past deadline

    Keep us updated on the lifter situation and the result of the repairs. My 18 Denali is sitting in a dealer as of Monday with 80k on it waiting for it to be torn apart, diagnosed, and repaired. Tech says it is a lifter ticking (we initially thought it was exhaust manifold leak), but he has 3...
  17. lbenson

    2018 6.2L, UPDATE: Lifter failure at 80k miles

    After driving 1,000 miles since the video I finally had the truck get looked at by my dealer in Minnesota after driving from southern Indiana. Truck seemed to perform fine the whole way home, but could hear the ticking noise under light acceleration below 2,000 RPM on highway. Engine hasn't...
  18. lbenson

    Help - 2016 Yukon Denali - rough Rider

    I ditched the MRC in my 2015 and replaced with rears that still had the air ride level feature and a plug that tricked the computer to thinking MRC was still plugged in. I was going to go with MRC but the shocks were on national backorder then. With my 18, since I have way less miles than the...
  19. lbenson

    Help - 2016 Yukon Denali - rough Rider

    Glad to hear it is riding close to new. Obviously it will never be 100% the same as the day you drove it off the lot but it will make a difference. I'm about ready to pull the plug and replace mine at 80k now. Not blown out yet but one is leaking for sure. May as replace them and enjoy the ride...
  20. lbenson

    2018 6.2L, UPDATE: Lifter failure at 80k miles

    Sent video to my service advisor. Said it sounds like it is knocking in the lower end of the engine, but since it quiets down after the engine warms up it could be an exhaust manifold leak.
  21. lbenson

    2018 6.2L, UPDATE: Lifter failure at 80k miles

    Good idea. I'll do it in the AM tomorrow when the engine is totally cold.
  22. lbenson

    2018 6.2L, UPDATE: Lifter failure at 80k miles

    Hi Everyone. I went out this evening and started my truck remotely in my parking ramp as I approached it. And then I start to hear this awful sound... My guess is a lifter is starting to fail. It has given me 7-15 seconds of squeaky sound every cold start the past 6-8 weeks. This knocking or...
  23. lbenson

    No Transmission Service or Tune up

    Died meaning in need of total transmission replacement. Thing still moved but not that great. It had delayed engagement (Slammed into R from P), N was another R gear, slipped from 1 to 2, underpowered on highway, internal computer wasn't responding to anything, and a few other things. The thing...
  24. lbenson

    2015 Chevy Tahoe Transfer case issues

    Transfer case has to have been killed prematurely by running it in 4A most of the time. ALWAYS ALWAYS ALWAYS run the truck in 2WD unless conditions permit for 4A (Snow... stuck in mud... etc). Otherwise dry pavement and 4A will kill the transfer case. I've heard of many stories from friends or...
  25. lbenson

    Help - 2016 Yukon Denali - rough Rider

    Same thing happened with my '15 Yukon Denali. Shocks were blown out and killed the air compressor with them as it was constantly running. I let it go for a while and never had a dash light or error message either. Only when I unplugged the old blown out compressor and had no compressor until the...

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