Considering a 26 Tahoe or Yukon. Which engine is the most reliable?

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tjs3922

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I currently have a 5,3 in my 26 Yukon XL. I have had 3 of the 5.3's since 2015 and all performed well, poor gas mileage but that is the deal with these vehicles.

Honestly I miss my 6.2's. Love the rumble and ample acceleration. Never had a lick of an issue with my 3.
 

2024 White Tahoe

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I currently have a 5,3 in my 26 Yukon XL. I have had 3 of the 5.3's since 2015 and all performed well, poor gas mileage but that is the deal with these vehicles.

Honestly I miss my 6.2's. Love the rumble and ample acceleration. Never had a lick of an issue with my 3.


Why do you say poor gas mileage? Do you expect the vehicle to get better gas mileage than it is rated?
 

BacDoc

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I currently have a 5,3 in my 26 Yukon XL. I have had 3 of the 5.3's since 2015 and all performed well, poor gas mileage but that is the deal with these vehicles.

Honestly I miss my 6.2's. Love the rumble and ample acceleration. Never had a lick of an issue with my 3.
6.2l in my 2024 High Country and I have to agree with ample acceleration and the sound of the rumble!
Only have 16k miles and no issues.

The audio system is fine for me but maybe just average for a high end vehicle.

The brakes on all these trucks are the major weakness and I highly advise spending the money on either the GM Performance or similar front brake upgrade. Definitely worth the price.
 

ducfan

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You can fix that automatic stop start in about 20 minutes permanently for 100 bucks. That's a no brainer. As far as those second row folding seats go, sorry but that would have been a deal breaker for me. I will say those seats look nice and or comfy, but their utility for the rest of the unit Goes against every reason for having this big vehicle. Not to mention you paid extra for them. I have my seats down a couple of times a month for various reasons.
Yes, already fixed the ASS. I agree the middle no-folding row is a deal breaker. Unfortunately, I wasn't aware GM even sold a Yukon with a middle row that would not fold. Why would anyone want that? Anyway, my fault for not learning about those seats ahead of time.
 

blanchard7684

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I run the piss out of my 2024 5.3 in a Suburban. No issues in almost 25000 miles.

I added a catch can and finally got around to putting in a DFM disabler because the L9 thing was annoying me in short trips around town.

The 5.3 has been a tough little motor and very quiet as far as major or minor issues.

The 10 spd runs ice cold which is nice.

Most unexpectedly nice feature in this thing was the AC is actually too powerful.
 

BacDoc

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I always heard about the Escalade IQ but never even considered EV when I bought my Tahoe new in 2024. Definitely not an EV guy as most of those EV “guys” are a little light in the loafers or communists! Going EV is like going against your religion or getting expelled from your family lol!

Well now it’s 2 years old and just over 16k miles and passed the pico test, got the extended bottom end warranty and running 0-40W. Engine has had no issues and I really love the Tahoe especially after upgrading the brakes, wheels, tires and getting the illumination features. And I am stuck between keeping this and selling /trading while it still has a year of B to B Factory warranty. Low mileage,garage kept and service records for 5 oil changes since new should sell without issue.
Dilemma is what to replace it with.

Looking strictly at engine/transmission reliability none of the GM engines, 5.3, 6.2, 3.0 diesel can really claim that much.
Neither can others in the class - Ford, Lincoln, Nissan or Toyota.
Maybe the big Lexus GX 600 I think it has the same engine as the GX 550 or Toyota Tundra.

I started watching reviews on the Escalade and in the rare event I saw someone getting in or out of an Escalade IQ I asked them questions. Small sample but not a single negative.

In the meantime I bought my wife a VW ID Buzz and have 2 months driving this EV “girls car” and gotta say it is definitely quirky and more like a phone or a computer than car but it is so fun to drive and it has plenty of space.
On of the main reasons I started investigating the Cadillac Escalade IQ.

If the price was close the most reliable option would be the Escalade IQ.
You basically get rid of the transmission issues, the engine is built and runs like a high speed train and the zero to 60mph performance blows every other V8 away.
Plus the features of soft close automatic doors that will never hit anything in your garage or in a parking lot when opening, amazing graphics on the beautiful OLED infotainment screen and from the reviews the quietest ride and best quality audio system. Tow capacity maybe a weak point at 8k but that’s plenty for the majority of trailers in use.

You want warranty?
The motor and battery is 8 years and 100k miles!

You gotta be kidding me!!!!

Any way if you can afford it - this is the answer to what is the most reliable, best power plant in a big land yacht and maybe one of the most reliable trucks in the size class.
Price of admission tho…..
 

Chitragupta

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I’m here in the DFW area and about two months ago I was invited to attend a car review for two days and I was paid $250 per day.

It wouldn’t be a bad retirement gig if they came along once a week.

It was held in a huge wear house that was just north of the DFW airport.

It was put on by a company based in Orange County, CA and there were four rows of full size SUVs stacked two deep.

Each car was blacked out with large sheets of black cloth so you couldn’t identify its manufacture.

Me being a car guy I spotted they had the Lincoln Navigator, Jeep Grand Wagoner, a mid-level Chevy Tahoe and a fully decked out GMC Yukon.

No cellphones were allowed (camera) and when you walked in the door they gave you an armored rubberized iPad with pages and pages of questions to rank from 1 to 5 on looks, feel, is it masculine, is it feminine, asking for your opinion on the exterior of the car, the wheel rims, interior fit, how does it feel, looks, etc.

The first car in each row had everything except the driver’s compartment of the car blacked out with cloth covers.

Each car had a three foot cutout of a little girl at the right front corner and one of the questions was on visibility and could you see the little girl?

After you finished with the first row of cars you went to the same make of SUV car on the second row and sat in the second row right passenger seat, then the third row passenger seat and then went aft to cargo compartment to open and close the hatch.

Each spot had a few pages on your iPad to rank from 1 - 5 more of your thoughts and opinions.

One row of cars had VR Googles.

You got in the driver’s seat and put your hands on the steering wheel.

The technician adjusted the VR Googles so your computer generated hands matched your real hands on the steering wheel.

After the VR Goggles matched how you were sitting in the driver’s seat the technician put up several different kinds of cockpits with gauges, cup holders, etc.

My report time was 14:00 and I wasn’t done until 19;00.

The guy said they were running about 500 people through in one week.

Once you finished one row of cars you reported back to the head table and they gave you your next assignment of cars.

I noticed as someone new came in they would be assigned a different row to start on.

I assumed it was due to fatigue because I noticed I was dragging towards the end and perhaps not giving the same response I had given at the beginning of the reviews.

By giving each person a different random order of cars to review it averaged out the fatigue issue, just guessing.

Most were there for just for one day but about 20 of us were invited back on day two for a round table discussion.

On day two we were all mic up and there was a guy running a video camera and they recorded our discussions on different slides they put up of SUVs and what we wanted in a full size SUV?

All of us had recently purchased a full size SUV that put us on their radar.

For me it was our 2025 Lincoln Navigator L we bought last August specifically for the 6+30 road trips we do about six to eight times a year down to a little fishing cabin on the Texas Gulf coast I share with my brother and sister that was built in 1923.

I hated that Lincoln Navigator within one hour on our first road trip down.

The list is long on what I didn’t like but the 28 different ways to adjust the seats just couldn’t overcome how bad the seats were for comfort.

It was mandatory to run the massaging seats the entire trip to overcome the numbness in your legs from the lousy seats.

Add in the left door arm rest was about six inches to low so you either drove leaning to the left or you constantly were driving with your right hand.

The gauge package on the Lincoln Navigator has little twinkling pixie dust on both the RPM needle and the Speedometer needle.

For our trips to the Texas coast we take IH35 down to Waco where we exit and now we are on two and four lane Texas highways.

From DFW to Waco is 25% of the drive and the Blue Cruise system will work but once we are off of IH35 it’s old school manual driving for the next 75% of the drive.

When you get down to it I’m not impressed with Blue Cruise because it drives like a 12 year old.

On a highway with a long sweeping curve it constantly bumps as it makes minor corrections

Back in 2015 we took the kids to see Yellowstone National Park.

We flew into Salt Lake City and I had a Suburban reserved for our week in the park.

The car rental (Alamo?) company had upgraded us to a Lincoln Navigator L and I had no issues with the car on the long drives all over Yellowstone.

Back then it was just a mere six way adjustable driver’s seat with some really great memory foam.

I asked my Lincoln Service Advisor if I could find a set of Ford Expedition seats and swap them out?

He said the computer would go nuts because it’s looking for the original seats.

Last Friday I swapped out the less than one year old Lincoln Navigator for a GMC Yukon XL.

I took a huge hit in deprecation but life is too short to go through with lousy seats.

Both the Lincoln Navigator and the GMC Yukon get a report card grade of a C+ in displaying information to the driver.

Both FoMoCo and GM have a software already written for their pickup trucks and I find it hard to believe Hot Shot drivers in their F450 have pixie dust twinkling around their gauge package.

With the modern cars and their large iPad like displays if I was designing cars I would have it where your key fob would also trigger what gauge package is displayed for each driver.

Mom could have a minimalist display of only speed and perhaps a clock while dad could have a gauge package equal to an old school Mack truck.

After two six figure SUV’s in under one year I’m severely unimpressed at what could be displayed or how it was displayed on both the driver’s display and the center display.

It’s still to early on the GMC Yukon to rant but with what is a few lines of code that would make a button bigger to press, the stored radio station play list is horrible (I have to be doing something wrong) the list is long for both FoMoCo and GM to improve on.

One would think Motown has groups of people who test these things before they put them into production but it must be a huge table back in DTW that shoots down the ideas from the little people in the trenches who actually will be using the car on what they want on a car.
 
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Vladimir2306

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LM2 and LZ0....
LZ0, is this the one that is put on the 2025-2026 generations Yukon and Tahoe? We began to have problems with these engines. If the previous diesel engine 2021-2024 did not cause any problems, then the new one began to break down, and en masse. So now we have only two engines that the services recommend for purchase, these are 5.3 and 2.7t gasoline, which are very reliable compared to 3.0d and 6.2. Plus 3.0d is also much more difficult to repair than the same 6.2.
 

Vladimir2306

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Unfortunately, in the current realities it is only 5.3, but it is sad
 

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