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GM 5.3 or 6.2
#14280914
02/10/22 06:29 PM
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Joined: Nov 2010
Posts: 241
lilBr.
OP
Outdoorsman
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OP
Outdoorsman
Joined: Nov 2010
Posts: 241 |
Having trouble deciding on whether to get a 5.3 or 6.2. Looking in the 2014 to 2018 version of the GM / Chevy - mainly because of the adjustable pedals. I tow a 21' bass boat. I know they will both tow it but I like to set the cruise on 80 or so and just go - most of my trips average 5 - 7 hours towing the boat, and 75% of the miles I drive my truck are with the boat. The 6.2 recommends the premium fuel. I have had two older (2011) 6.2 and they were great but I did not get good fuel mileage with them. Never owned a 5.3 but a couple of buddies have and they seem to struggle up a hill with a head wind. I would like a diesel but I don't feel its practical for the increased cost towing no more weight than I do.
Thoughts?
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Re: GM 5.3 or 6.2
[Re: lilBr.]
#14281218
02/11/22 12:32 AM
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Joined: Apr 2010
Posts: 26,582
patriot07
TFF Guru
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TFF Guru
Joined: Apr 2010
Posts: 26,582 |
I wouldn't touch anything that requires premium fuel.
Life can only be understood backwards; but it must be lived forwards. - Soren Kierkegaard
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Re: GM 5.3 or 6.2
[Re: lilBr.]
#14281300
02/11/22 01:53 AM
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Joined: Jan 2005
Posts: 7,491
redchevy
TFF Celebrity
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TFF Celebrity
Joined: Jan 2005
Posts: 7,491 |
They have never “required” diesel fuel. They just won’t make quite their rated peak power without it.
I’d look at a Toyota turbo 6 cylinder or a Ford ecoboost.
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Re: GM 5.3 or 6.2
[Re: lilBr.]
#14281436
02/11/22 03:47 AM
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Joined: Apr 2010
Posts: 26,582
patriot07
TFF Guru
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TFF Guru
Joined: Apr 2010
Posts: 26,582 |
I used to get 18-19 mpg towing my bass boat when I had my Ram ecodiesel. It was amazing towing small loads. Might be worth consideration.
Life can only be understood backwards; but it must be lived forwards. - Soren Kierkegaard
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Re: GM 5.3 or 6.2
[Re: lilBr.]
#14281441
02/11/22 03:48 AM
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Joined: Apr 2010
Posts: 26,582
patriot07
TFF Guru
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TFF Guru
Joined: Apr 2010
Posts: 26,582 |
The 5.3 is mostly gutless. And the 6.2 requires a higher trim package than I was interested in back when I was looking at them.
The ecoboost isn't a bad option. But they're not fuel efficient if you're running 80 mph with a boat.
Life can only be understood backwards; but it must be lived forwards. - Soren Kierkegaard
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Re: GM 5.3 or 6.2
[Re: lilBr.]
#14281687
02/11/22 01:31 PM
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Joined: Oct 2016
Posts: 344
~Moose~
Angler
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Angler
Joined: Oct 2016
Posts: 344 |
I have had 2 with the 5.3. I had a 2016 GMC Sierra All Terrain that was a very nice truck and pulled my 20' Skeeter well.....as long as you werent going uphill or trying to pass. Then after a drunk driver decided I didnt need that truck anymore I bought a 2017 model of the same truck. Of course the performance was the same. Got tired of the lagging nature while towing and started looking around. Buddy of mine had a 2500 with the 6.2 and was not happy with it. Said he still felt like he had to put his foot into it more than should be necessary. I was very patient in the process and finally found a 2018 GMC 2500HD 4x4 with the Duramax and Allison at a price I was happy with. Bought it with 41k miles on it. Took about 8 months of shopping around before I found the right deal but man was it worth it! This thing pulls like a dream! The Duramax has nearly double the torque of the 6.2 gasser. I have almost 75K on it now and have no plans of getting rid of it anytime soon. If you can hold off and find the right deal, you wont be disappointed.
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Re: GM 5.3 or 6.2
[Re: lilBr.]
#14282281
02/11/22 09:40 PM
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Joined: Nov 2010
Posts: 241
lilBr.
OP
Outdoorsman
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OP
Outdoorsman
Joined: Nov 2010
Posts: 241 |
Thanks for the input - now I have people telling me to consider the little duramax.
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Re: GM 5.3 or 6.2
[Re: lilBr.]
#14282758
02/12/22 01:50 PM
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Joined: Jul 2021
Posts: 422
AirForceAngler
Angler
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Angler
Joined: Jul 2021
Posts: 422 |
I have a 2021 Silverado Z71/RST with the 6.2 and 10 speed. Loving this truck so far. Running empty on the interstate, I regularly get 20+ mpg at 75. It has gotten as good as 25 with a slight tail wind. I usually run 89 octane in it but will use 91 if I know I'm going to be towing bigger loads. I frequently pull 24' or 26' box trailers for my daughter's high school band and it pulls those great as well and that's when I'll use 91 fuel.
2005 Lund Rebel SS 1650 with Merc 25 HP 4-stroke. Make America Great Again - Again! DJT 2024
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Re: GM 5.3 or 6.2
[Re: lilBr.]
#14282901
02/12/22 03:37 PM
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Joined: May 2010
Posts: 9,731
Space
TFF Celebrity
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TFF Celebrity
Joined: May 2010
Posts: 9,731 |
Having trouble deciding on whether to get a 5.3 or 6.2. Looking in the 2014 to 2018 version of the GM / Chevy - mainly because of the adjustable pedals. I tow a 21' bass boat. I know they will both tow it but I like to set the cruise on 80 or so and just go - most of my trips average 5 - 7 hours towing the boat, and 75% of the miles I drive my truck are with the boat. The 6.2 recommends the premium fuel. I have had two older (2011) 6.2 and they were great but I did not get good fuel mileage with them. Never owned a 5.3 but a couple of buddies have and they seem to struggle up a hill with a head wind. I would like a diesel but I don't feel its practical for the increased cost towing no more weight than I do.
Thoughts?
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Re: GM 5.3 or 6.2
[Re: lilBr.]
#14282904
02/12/22 03:38 PM
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Joined: May 2010
Posts: 9,731
Space
TFF Celebrity
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TFF Celebrity
Joined: May 2010
Posts: 9,731 |
Split the difference and go with a 6L.
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Re: GM 5.3 or 6.2
[Re: lilBr.]
#14283315
02/12/22 11:34 PM
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Joined: Apr 2008
Posts: 834
Diablosandwich
Pro Angler
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Pro Angler
Joined: Apr 2008
Posts: 834 |
Thanks for the input - now I have people telling me to consider the little duramax. +1
VHF 16/68
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Re: GM 5.3 or 6.2
[Re: patriot07]
#14283506
02/13/22 03:09 AM
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Joined: Dec 2018
Posts: 167
KYBluefan
Outdoorsman
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Outdoorsman
Joined: Dec 2018
Posts: 167 |
The 5.3 is mostly gutless. And the 6.2 requires a higher trim package than I was interested in back when I was looking at them.
The ecoboost isn't a bad option. But they're not fuel efficient if you're running 80 mph with a boat. I had 09 5.3 Z71 and yes it was a turd pulling my ZX20. My V6 4Runner isn't much worse at highway speeds at towing. Taking off the 4Runner is actually better but it is harder to maintain speed but not as much as you would think. Won't be getting a 5.3 ever again if I can help it.
Last edited by KYBluefan; 02/13/22 03:09 AM.
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Re: GM 5.3 or 6.2
[Re: KYBluefan]
#14294235
02/23/22 06:45 PM
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Joined: Sep 2020
Posts: 164
Buchbass2
Outdoorsman
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Outdoorsman
Joined: Sep 2020
Posts: 164 |
I have a 2021 Silverado Z71/RST with the 6.2 and 10 speed. Loving this truck so far. Running empty on the interstate, I regularly get 20+ mpg at 75. It has gotten as good as 25 with a slight tail wind. I usually run 89 octane in it but will use 91 if I know I'm going to be towing bigger loads. I frequently pull 24' or 26' box trailers for my daughter's high school band and it pulls those great as well and that's when I'll use 91 fuel. The 5.3 is mostly gutless. And the 6.2 requires a higher trim package than I was interested in back when I was looking at them.
The ecoboost isn't a bad option. But they're not fuel efficient if you're running 80 mph with a boat. I had 09 5.3 Z71 and yes it was a turd pulling my ZX20. My V6 4Runner isn't much worse at highway speeds at towing. Taking off the 4Runner is actually better but it is harder to maintain speed but not as much as you would think. Won't be getting a 5.3 ever again if I can help it. Same for me 89 unless I'm towing, great mileage for that size engine.
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Re: GM 5.3 or 6.2
[Re: lilBr.]
#14296081
02/24/22 11:38 PM
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Joined: Jun 2001
Posts: 3,371
BNKrust
TFF Team Angler
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TFF Team Angler
Joined: Jun 2001
Posts: 3,371 |
Tend to agree. I had an F-150 with the 4.6 that towed better than my Chevy with the 5.3
It's a gutless turd.
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Re: GM 5.3 or 6.2
[Re: lilBr.]
#14297683
02/26/22 06:08 AM
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Joined: Dec 2010
Posts: 5,745
Mckinneycrappiecatcher
TFF Celebrity
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TFF Celebrity
Joined: Dec 2010
Posts: 5,745 |
I’ve heard the 5.3 in those year models is pretty weak. A ford ecoboost is a good option in that year range. 3.55 or 3.73 rear end will cruise in 6th gear in most cases, might downshift to 5th on a fairly steep hill with that load. They make max torque in the 2500 rpm range so you cruise at max torque.
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