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5.3L EcoTec3 V8

Old 10-11-2019, 04:37 PM
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Default 5.3L EcoTec3 V8

I am looking at a 2019 Tahoe with the 5.3L EcoTec3 in it. I am not famailar with the GM line but the price seems right. I would like the Expedition with the Eco Boost but it is running $10,000 more. Anyone have one? Any thoughts?
Old 10-11-2019, 04:59 PM
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You get what you pay for. The 5.3 is underpowered engine in today's world. The AFM are known to cause issues as the miles pile up. afteHope you have an extra ride as the new GMs are in the shop more than on the road, or at least that's my experience.
Old 10-11-2019, 05:21 PM
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I had a company issued 2013 Sierra with the 5.3 and ran it to about 157,000 miles without any issues. It was just replaced this year with a Silverado with the 5.3. Personally, I think it has plenty of power. It's averaging almost 16 mpg with a lot of off road driving on logging roads. Much better then my ecoboost that averages 13.5.
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Old 10-11-2019, 05:23 PM
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Are you serious. Ford cost 10k more. Are you comparing apples to apples? That seems like alot more. Anyways, ever since Chevy went bankrupt and stoled my tax dollars they can KISS my ass. The AFM is garbage. Just that alone, if I did like Chevy I wouldnít buy it. Been there done that, never again. And yes youíll get the people saying you can delete it but why have to do that to a new vehicle. My personal opinion is that I stay clear of Chevy.
Old 10-11-2019, 05:28 PM
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Supposedly the AFM issues have been sorted out.

I feel like most issues after they fixed the valve cover design were due to people not checking their oil, using the wrong oil to begin with, and going too long between changes.

That being said, Iíd rather have a 6.2. The 5.3 isnít a bad engine, and being a SBC will go 200k with routine maintenance.
Old 10-11-2019, 06:05 PM
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Originally Posted by cjhcco View Post
I am looking at a 2019 Tahoe with the 5.3L EcoTec3 in it. I am not famailar with the GM line but the price seems right. I would like the Expedition with the Eco Boost but it is running $10,000 more. Anyone have one? Any thoughts?
I have a new 2019 Tahoe, with the 5.3L EcoTec3 motor. I have one with the Max Trailering Package, so it has the 3.42 rear end and 4WD with 4Lo.

Bought mine in August and now it has 2,800 miles on it, 1,300 of which is towing my 3,700 lb boat. I’ve towed my boat from VA’s middle peninsula to Ithaca, NY, and back. 500 miles each way.

Don't listen to what others are saying, it’s a wonderful tow vehicle and behaves well when towing. It has plenty of power.

Remember, this is THT, and people lose their minds easily. If you’re not towing a skiff with a Kenworth, you’re under-powered or overweight.

Feel free to ask any questions you may have.

Dun

Last edited by Dun; 10-16-2019 at 02:24 PM. Reason: typos
Old 10-11-2019, 06:28 PM
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5.3 is a solid motor in current form. That said it is anemic compared to the 3.5 eb.

that said, they do pretty good with 3.42 gears. If it doesnít have a factory brake controller, it likely doesnít have 3.42 gears. Also at least drive a suburban before you land on a Tahoe. A suburban is not a big vehicle, itís the size of a regular cab, short bed pickup. But itís 20Ē longer than a Tahoe. This equals much better stability and a nicer ride, especially if towing. Thatís not to say not to get a Tahoe, but at least drive a suburban. Itís a whole lot more vehicle for similar $.
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Old 10-11-2019, 06:31 PM
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Originally Posted by cjhcco View Post
I am looking at a 2019 Tahoe with the 5.3L EcoTec3 in it. I am not famailar with the GM line but the price seems right. I would like the Expedition with the Eco Boost but it is running $10,000 more. Anyone have one? Any thoughts?
Equally equipped their within a few hundred dollars of one another. You must have been comparing apples to goat shit to save 10 grand.
Old 10-11-2019, 06:36 PM
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Originally Posted by Dun View Post


I have a new 2019 Tahoe, with the 5.3L EcoTec3 motor. I have one with the Max Trailering Package, so it has the 3.42 rear end and 4WD with 4Lo.

Bought mine in August and now it has 2,800 miles on it, 1,300 of which is towing my 3,700 lb boat. Iíve towed my boat from VAís middle peninsula to Ithaca, NY, and back. 500 miles each way.

Don't listen to what others are saying, itís a wonderful tow vehicle and behaves well when towing. It has plenty of power.

Remember, this is THT, and people lose their minds easily. If youíre not towing a skiff with a Kenworth, youíre under-powered or overweight.

Feel free reed to ask any questions you may have.

Dun
I'm not sure if you can get a good feeling for a vehicle with only 2800 miles. I have logged about 200k miles on GM 5.3 V8s. The power of the nee 5.3 has decent power for maybe 15 yrs ago, but if you don't need the juice of the EB. Hemi, Force, etc the 5.3 is fine. Remember you cant tow anything over 5k lbs with a half ton or you will instantly get in an accident and burst into flames.

Last edited by Salmonbum; 10-11-2019 at 06:47 PM.
Old 10-11-2019, 06:40 PM
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Originally Posted by Salmonbum View Post
I'm not sure if you can get a good feeling for a vehicle with only 2800 miles. I have logged about 200k miles on GM 5.3 V8s. The power of the nee 5.3 has deceit power for maybe 15 yrs ago, but if you dint need the juice of the EB. Hemi, Force, etc the 5.3 is fine. Remember you cant tow anything over 5k lbs with a half ton or you will instantly get in an accident and burst into flames.
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Old 10-11-2019, 07:16 PM
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I had a 2009 GMC with the 5.3L with only a 4 speed. It would tow 7K of boat about 63mph was the sweet spot on the highway. I do agree the EB in the Fords was much stronger but my 5.3L went 136K miles with no issues till 2016... The 5.3L is a descent engine to tow up to about 5K or 6K..

Last edited by Cracker; 10-12-2019 at 05:23 AM.
Old 10-11-2019, 07:43 PM
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Originally Posted by Misterfu02 View Post
Supposedly the AFM issues have been sorted out.

I feel like most issues after they fixed the valve cover design were due to people not checking their oil, using the wrong oil to begin with, and going too long between changes.

That being said, Iíd rather have a 6.2. The 5.3 isnít a bad engine, and being a SBC will go 200k with routine maintenance.
This gives me a warm fuzzy feeling. You said, supposedly has been fixed. I donít want to hear supposedly, I want to know itís been fixed. Especially considering what they cost.

Second, letís face it who checks their oil on a regular basis. Itís almost 2020, I donít think I should have to check my oil much, if at all between a5k oil change. Unless I see oil in the driveway.

Wrong oil? What does that mean? I think if it says 5w-20, then I should be able to use any 5w-20 oil. Now if you are putting 10w-40, then you shouldnít own a vehicle if you canít follow directions.

I can see going to long between oil changes. But what does Chevy consider too long, when they say to change it at 5k, for instance. Then that would fall under, canít follow directions.

I have owned many Chevy V8, including that AFM crap. By far the best was the LQ9 6.0 in my Silverado SS. I also liked the LS2 in the couple of Tralblazer SS I had. Only down fall was the lack of oiling to the rear bearings under hard acceleration, usually creating a window in your block. I think incorporating too much crap into a simple push rod engine is a bad idea.
Old 10-11-2019, 07:44 PM
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The new DI 5.3 has much more power than the MPI version. You need to use throttle and when towing push the tow/haul button.
Old 10-12-2019, 01:17 PM
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Wifeís 2018 Tahoe is an rst with the 6.2. Test drove a 5.3 and it was noticeably slower. Not sure about the 2019s or 2020s, but for the 18s, only way to get the 10 speed was the 6.2. That alone made it worth it to me to get the 6.2
Old 10-13-2019, 05:17 AM
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Unless you get a Suburban with the Premier trim, itís coming with the 5.3L EcoTech3 engine. People on THT are always touting how well the Suburbans tow (with probably 80% of them having the 5.3L), yet bashing the Tahoe with that same motor.

Nope, it makes no sense.

Thus, the value of opinions in Internet forums.
Old 10-13-2019, 05:29 AM
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Originally Posted by Misterfu02 View Post
Supposedly the AFM issues have been sorted out.
Good to hear. AFM first appeared in the 2007 models, so sorting out AFM only took, what, 10-12 years?

I'm really hoping I don't need to replace my 2004 Suburban 5.3L any time soon.
Old 10-13-2019, 05:37 AM
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Originally Posted by Salmonbum View Post
You get what you pay for. The 5.3 is underpowered engine in today's world. The AFM are known to cause issues as the miles pile up. afteHope you have an extra ride as the new GMs are in the shop more than on the road, or at least that's my experience.

this!!! I have a 2018 Tahoe for work and it is a giant piece of crap. So are the 8-10 2012-2015s that we have. Electrical, ac, motor, transmission problems galore. Buy the expedition.

all of these Tahoes are the 5.3s
Old 10-13-2019, 07:09 AM
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Originally Posted by Dun View Post
Unless you get a Suburban with the Premier trim, itís coming with the 5.3L EcoTech3 engine. People on THT are always touting how well the Suburbans tow (with probably 80% of them having the 5.3L), yet bashing the Tahoe with that same motor.

Nope, it makes no sense.

Thus, the value of opinions in Internet forums.
more to towing than motor. The Tahoe has about the same wheelbase as an average sedan. Long wheel base = significantly better towing characteristics in terms of ride and handling. Not to mention with a Tahoe, if you fill up all 3 rows of seating, where do you put your stuff?

Tahoeís are decent vehicles, but I donít see their purpose when you can get a suburban for basically equal $ and have a much more versatile vehicle with minimum downsides. I know several people that have moved from Tahoeís to a suburban, and none that have gone the other way. The stigma of them being huge and lumbering vehicles is simply untrue. They are the size of a regular cab, short bed pickup. Add in all the cameras and sensors they have these days and they are easy to drive even in tight parking lots.
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Old 10-13-2019, 07:14 AM
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The 5.3 is a good engine. The problem is the platform that it's in. GM vehicles suck. Get the ford with the 3.5 EcoBoost...
Old 10-14-2019, 09:05 AM
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Never get a Tahoe, get a Suburban.
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