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'05 Suburban 8.1L vs. 3/4 ton as dedicated TV

jbloch
Explorer
Explorer
I have been searching for a used (~2003-2005) 3/4 ton truck to use as a dedicated TV but am considering going with a 2005 Suburban with the 8.1L with 130k miles on it.

Specs on my TT are:

Dry weight: 6575
TW: 980
Length: 33'

Can anyone advise how the towing experience will differ in general between the burb and a 3/4 ton? We will only use this to tow maybe twice a month with occasional longer trips.

Thanks in advance.
22 REPLIES 22

wtilley51
Explorer
Explorer
If the Suburban has an 8.1, it is a 2500 series or 3/4 ton. I have a 2004 and it has a max tow capacity of 12,000 and max tongue weight of 1400. My TT gross weight is 9400 but it normally weighs in at around 8300. I have absolutely no issues towing that trailer. Went up the western front of the Rockies at 55 and down the eastern front without touching the brakes at 45-50, sometimes even slower.

JBarca
Nomad II
Nomad II
jbloch wrote:
I have been searching for a used (~2003-2005) 3/4 ton truck to use as a dedicated TV but am considering going with a 2005 Suburban with the 8.1L with 130k miles on it.

Specs on my TT are:

Dry weight: 6575
TW: 980
Length: 33'

Can anyone advise how the towing experience will differ in general between the burb and a 3/4 ton? We will only use this to tow maybe twice a month with occasional longer trips.

Thanks in advance.


Hi,

I use to have a 2003 K2500 Suburban, 6.0 with the 4.10 rear axle and it even had the Quadrasteer rear axle. It had LT trim. The GCWR is 16,000# and the truck with all the options a Burb has in the LT less the 75# beast of a 3rd seat weighed 7,560# with full gas, 2 adults and 350# of camping gear inside and the hitch head. I have measured and weighed mine about 6 ways from next Tuesday... and if all that data can help you, great!

With a properly adjusted WD hitch, and the weights above, the truck can handle a 1,200# loaded trailer TW and not go over the 8,600# GVWR. It weighed 8,500 GVW. And the rear axle was loaded to 5,040# against the 5,500# rating. While the axle may handle more, the truck springs may not. The LT-E tires could.

The 8.1 and the Quadrasteer rear end adds about the same weight to the truck. ~ 300# more. The Q steer only came in the 6.0 as it could not handle the torque of the 8.1.

The 8.1 with the 3.73 rear axle was rated at 17,000# GCWR and the 4.10 took it to 19,000# GCWR if you had 4 x 4.

Pulling with the 8.1 is not so much an issue but loaded tongue weight can be. 1,200# TW with family inside will be your limit.

You stated 33 feet, for me, on a 130" wheel base with with a 65" rear overhand (ball to center of rear axle) if you towing that long and in the weight range you are, I would recommend a Hensley or a Propride hitch and change the GM receiver. I know the Reese DC very well and I know the limits the high friction hitches can have.

My Burb was a really good truck and I miss it. But I found it's limitations when length and weight come into the equation and when towing mountains on the "east" coast.

If you get the exact same 8.1 engine with the 4.10 rear axle in a 2500HD crew cab pickup, it can haul more weight, have greater towing stability and pull more camper because the truck weighs less to start with on a longer wheel base. The crew cab has the same seats as the Burb less the 3rd row seat. And by the way, the used 2500HD will cost less in most cases. If you can find that 8.1/4.10 2500HD they had the Allison transmission. Point being, a 3/4 ton PU will out haul any 3/4 ton SUV with the same engine and drive train. The creature comforts of the Burb come with a price, added truck weight and less towing capability. It is not saying that are not good towing trucks, but all within their ratings.

Your trailer,
Dry weight: 6575
TW: 980
Length: 33'

That trailer is starting with a 14.9% dry TW. It will tow very stable, but what is the floor plan? Is it by chance a rear living layout or maybe a front kitchen? I have had 2 of the rear living layouts, and really love those layouts but they come with very high tongue weights when loaded. And that was one of the reasons I had to sell my Burb and upgrade to a PU, loaded TW and not enough tow rating.

If you can link the camper you are looking at, I can see how it will load and estimate where you any end up. Floor plan drives the loaded TW as you can only put gear most times where the floor plan allows.

Hope this helps and good luck

John

The camper in our sig


Our prior smaller camper
2005 Ford F350 Super Duty, 4x4; 6.8L V10 with 4.10 RA, 21,000 GCWR, 11,000 GVWR, upgraded 2 1/2" Towbeast Receiver. Hitched with a 1,700# Reese HP WD, HP Dual Cam to a 2004 Sunline Solaris T310R travel trailer.

Mike_E_
Explorer II
Explorer II
"You may want to reconsider that 8.1. They have oiling problems. Do some research..."

Well, I had a Suburban 2500 with the 8.1L, and I did the "research," and the only thing I found was that the engine does "use" some oil. Doesn't leak any...just uses it.
This was the case with mine (a quart every oil change @ 5K miles) until I switched to synthetic....then no loss.

I work with a few ex-GM techs and they all told me that yes, it does use some, but it's just the nature of the beast. The start-up "piston slap" that so many bemoan is nothing to worry about....their words.
They also mentioned that there was a reason the engine was spec'd in so many industrial type applications .....they are super solid engines that have a very long lifespan.

I was very happy with mine. Still kick myself for selling it....sigh

Mike

HJGyswyt
Explorer
Explorer




I've been towing a large trailer for many years with a 2500 454ci Suburban, pictured above and now the last two years primarily with our Duramax crew cab pickup. I love our newer truck, the Duramax pulls our trailer at over 11mpg and our Suburban never even got 8 and honestly it was sometimes as low as 6mpg.

Our trailer weighs 10,300 (8800 axles, 1500 tongue) and we travel heavy with all the toys and stuff we probably shouldn't have.

The Suburban would pull the trailer faster at sea level going up hills, mostly because the Vortec really comes to life around 4000RPM. But the Duramax Diesel pulls steady having more gears to work with.

The big difference for me is the ride. Our Suburban was much smoother with the same amount of air in the tires as our truck. Something about the flex of a truck frame, it bucks way more than the Suburban. The gap between the cab and bed really flexes when towing a heavy trailer, something you don't notice in the Suburban.

I only wish GM still made a diesel Suburban. All the best with your choice. Hans
2003 GMC 2500HD CC Longbox SW/2002 Wilcat Bunkhouse 30'
/1987 Western Wildderness 11' Alpine Truck Camper/1971 MacGregor Venture Sailboat

Rig Pictures, click on this link.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

chr_
Explorer
Explorer
You may want to reconsider that 8.1. They have oiling problems. Do some research...
-CHR$
1996 Safari Sahara Edition 35' Diesel Pusher. Just getting the Solar stuff started.

dodge_guy
Explorer II
Explorer II
The trailer you have in mind will be approx. 8000 lbs ready to travel. Figure on 12% for tongue weight. That would give you a loaded tongue weight of 1000lbs maybe closer to 1100. The 3/4 ton Burb with the 8.1 will have no issue with that trailer.
Wife Kim
Son Brandon 17yrs
Daughter Marissa 16yrs
Dog Bailey

12 Forest River Georgetown 350TS Hellwig sway bars, BlueOx TrueCenter stabilizer

13 Ford Explorer Roadmaster Stowmaster 5000, VIP Tow>
A bad day camping is
better than a good day at work!

ryanw821
Explorer
Explorer
intheburbs wrote:
msmith1.wa wrote:
One benifit of going with the truck is you will get the Allison transmission if looking at automatics.


Negative, Ghostrider. The Suburban, Yukon XL and Avalanche trucks were not available from the factory with the Allison. They all got the 4L85E transmission.


That's why he said it would be a benefit of going with a TRUCK, as in not the Suburban, at least that's how I read it anyways.

intheburbs
Explorer
Explorer
msmith1.wa wrote:
One benifit of going with the truck is you will get the Allison transmission if looking at automatics.


Negative, Ghostrider. The Suburban, Yukon XL and Avalanche trucks were not available from the factory with the Allison. They all got the 4L85E transmission.
2008 Suburban 2500 3LT 3.73 4X4 "The Beast"
2013 Springdale 303BHS, 8620 lbs
2009 GMC Sierra 1500 Denali (backup TV, hot rod)
2016 Jeep JKU Sahara in Tank, 3.23 (hers)
2010 Jeep JKU Sahara in Mango Tango PC, 3.73 (his)

msmith1_wa
Explorer
Explorer
One benifit of going with the truck is you will get the Allison transmission if looking at automatics.
2003 Silverado 2500HD 4x4 8.1l
2016 Evergreen Amped 28FS

intheburbs
Explorer
Explorer
If you're comparing the Burb to a 3/4-ton pickup, the only noticeable difference might be a little bit better stability, since a pickup would have a longer wheelbase (assuming it's a crew cab).

Otherwise, an 8.1 2500 Burb should pull that trailer just fine.

I pull a similar trailer with my '08 2500. Yours has a higher-rated hitch and higher payload. And don't worry about the 5500-lb rear axle rating. That same American Axle unit is rated to 10,000 lbs in other applications. The limiting factor is the tires, so technically the axle can handle 6,000 lbs in your truck.

Your GVW is the number to watch. Here's a weigh slip from a previous three-week trip fully loaded with the family - 3420+5120=8600 :C
2008 Suburban 2500 3LT 3.73 4X4 "The Beast"
2013 Springdale 303BHS, 8620 lbs
2009 GMC Sierra 1500 Denali (backup TV, hot rod)
2016 Jeep JKU Sahara in Tank, 3.23 (hers)
2010 Jeep JKU Sahara in Mango Tango PC, 3.73 (his)

jbloch
Explorer
Explorer
OP here.

Yes, 3/4T. Did they make the 1500 with 8.1L? I didn't think so but don't know. Suburban's GVWR is 8600 lb, curb weight estimated 5870 so cc is approximately 2830 max. Dry TW is 985 which I believe would leave 1845 for family + gear and a safety margin.

GAWR front is 4180, rear is 5500. I don't want to overload the rear axle either...I assume the pin weight all counts toward the rear GAW but not sure how to allocate cargo/family weight etc. without taking it to a scale.

Thanks all.

SuburbanHauler3
Explorer
Explorer
Dadoffourgirls wrote:
You would do fine. I would suggest that you replace the OEM hitch.


That was the first thing I did. Replaced it with a CURT XD.
2004 2500 Suburban LT 4x4, 6.0l 4.10's
1998 Fleetwood Terry 26A
There's 5 of us and we all ride.
KJ6RST

Dadio24
Explorer
Explorer
ryanw821 wrote:
SuburbanHauler310 wrote:
ryanw821 wrote:
SuburbanHauler310 wrote:
Dakota98 wrote:
x2 on what ryanw821 said.


Based upon your original posting on this subject & the recommendations offered there, the one piece of information that is the key to this entire situation is missing.

What is the "payload" capacity of the 2005 Suburban. If you don't know that, it's a******shoot.


If it's the same as my 04, then its 2350lbs, give or take a couple pounds.


Not 100% sure by his wording, but OP makes it sound like the Suburban he is looking at IS NOT a 3/4 ton (like the trucks he had been looking at), the 1/2 ton burb will have much less payload carrying capacity.

OP can you clarify this?


Yeah, your right, I think the 1/2 ton is around 1500lbs. I'm just assuming a 3/4 since I think you can only get 8.1 in that configuration.


You could very well be right, I am not up on all the configurations of the suburbans.

To the OP if it is a 1/2 ton burb, you need to scrutinize all your weights very carefully, if its a 3/4 ton burb, I am pretty sure you will be just fine, unless you plan on carrying a full load of bricks or something while camping, lol 😉


I have 2005 3/4 Ton Suburban with 6.0L 4X4. Pulled a 29ft TT for several years. Moved to 3/4T after I tried the 1/2T Sub. The “Soccer Mom Suburban” does not handle well pulling 8K lbs and I was not fun driving. The 3/4T is great. MPG is always 7-8, and 13.5 not pulling, so it’s not a cheap vehicle to operate, but the ease of towing is very nice...I have moved to a Class w/Jeep Toad…

Dadoffourgirls
Explorer
Explorer
You would do fine. I would suggest that you replace the OEM hitch.
Dad of Four Girls
Wife
Employee of GM, all opinions are my own!
2017 Express Ext 3500 (Code named "BIGGER ED" by daughters)
2011 Jayco Jayflight G2 32BHDS