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Open Roads Forum  >  Travel Trailers  >  General Q&A

 > GM 6.2L 420hp and 10-speed

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jfortenbery

Cincinnati Area

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Posted: 11/11/20 02:21pm Link  |  Quote  |  Print  |  Notify Moderator

I'm curious if anyone is towing with the Silverado or Sierra 1500 with the 6.2/10-speed. I've got one on order to replace my 5.3L/6-speed. I'm hoping for a slight improvement over my last combo.

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Jeff

Grit dog

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Posted: 11/11/20 10:41pm Link  |  Quote  |  Print  |  Notify Moderator

It would be a slight improvement if it was only running on 7 cylinders. Running on all 8 it will be a large improvement.


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

APT

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Posted: 11/12/20 07:41am Link  |  Quote  |  Print  |  Notify Moderator

I don't have one, but my engineering hat thinks you'll see more than slight improvement with 15% more power and 4 more gears!


A & A parents of DD 2005, DS1 2007, DS2 2009
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goducks10

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Posted: 11/12/20 09:06am Link  |  Quote  |  Print  |  Notify Moderator

Not sure if handling will be any better but you won't be at a loss for power. It does need 93 Octane for max power. Probably won't notice much between 87-93 IMO.

garyoNC

Garner NC

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Posted: 11/12/20 11:30am Link  |  Quote  |  Print  |  Notify Moderator

I just got my 20' Silverado w/6.2L and 10 speed. It is a beast. I got the factory performance package and it is very powerful. I will be getting a 21' travel trailer sometime this winter and will use this as my tow rig. Most surprising thing about my truck is with all that performance, if I keep my foot out of it I get real good gas mileage. I average around 21/22 MPG, and according to the DIC my highest ever was 24.8 MPG!

* This post was edited 11/12/20 12:26pm by garyoNC *

CavemanCharlie

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Posted: 11/12/20 01:13pm Link  |  Quote  |  Print  |  Notify Moderator

garyoNC wrote:

I just got my 20' Silverado w/6.2L and 10 speed. It is a beast. I got the factory performance package and it is very powerful. I will be getting a 21' travel trailer sometime this winter and will use this as my tow rig. Most surprising thing about my truck is with all that performance, if I keep my foot out of it I get real good gas mileage. I average around 21/22 MPG, and according to the DIC my highest ever was 24.8 MPG!


You got a truck with the 6.2L engine to pull a 21 foot TT?? You won't even know it's back there.

jfortenbery

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Posted: 11/12/20 04:07pm Link  |  Quote  |  Print  |  Notify Moderator

The data tells me it'll be a decent improvement, but data don't always tell the whole story. What I never liked about my 5.3/6speed was mainly the transmission. On long hills (or should i say slight upgrades), it would shift (in tow mode) from 6th (2,300 rpm) straight to 4th gear (3,800 rpm) skipping 5th altogether. AND, a GM V-8 just don't sound happy to me at 3,800 rpm. This was a Silverado w/ max towing pkg and 3.42 gearing.

BTW, I'm pulling a 32ft Outback 280KRS at about 8,000 lbs. I hope this new combo (and 460 ft/lb torque) will ease on down the road - or up the hills - a bit easier.

garyoNC

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Posted: 11/12/20 06:47pm Link  |  Quote  |  Print  |  Notify Moderator

The 6.2L should do a little better. But, 8K pounds may be a bit much for a 1/2 ton.

Z71K9

Johnstown, PA

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Posted: 11/12/20 08:17pm Link  |  Quote  |  Print  |  Notify Moderator

I have 6.2/10spd towing Grand Design 2800BH. Total beast.

Unhitched around town 15.5mpg. Highway 20-21mpg.

marpel

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Posted: 11/12/20 08:20pm Link  |  Quote  |  Print  |  Notify Moderator

As my current Sierra 1500/6.2/3:73 is getting on in age and will need replacing in the next year-ish, this new one is of interest. Either that or the 6.8 (I think, off the top of my head).

Two specific things - We pull a 21 foot, 4000lb fully loaded trailer, a lot between here (BC Canada) and Denver Co. and at 64-ish mph, I have to drive in 5th all the way on the flats (2300 rpm), and gear down on the inclines, of course. It just barely holds 5th and even when cresting a minor underpass, it will sometimes gear down - and I got the 6.2 because, at that time, it was the only unit that did not have the AFM, which GM were having issues with.

So, do you think the extra HP/torque will solve the 5th gear issue and allow the vehicle to stay in OD (on the flats, I realize hills are a different story)?
And, do the new vehicles still have AFM (or whatever they call it now)? And if so, have the previous issues been resolved?

Marv

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