Towing Capacity - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > Towing

Towing Towing with your TrailVoy

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  #1  
Old 10-07-2011, 03:38 PM
billy_rud10 billy_rud10 is offline
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2007 GMC Envoy SLT
Steel Gray Metallic 4.2L I6 4X4
Join Date: Sep 2011
Location: MA
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Towing Capacity

Just curious if someone could help me calculate my towing capacity.

GVWR: 5750lbs
GAWR FRT: 2960lbs
GAWR RR: 3200lbs
GCWR: 10,500lbs(thats what the manual says)
Hitch: 5500lbs
Hitch with WDH: 7200lbs

For towing I will be using a WDH to assist with the soft suspension the envoy has.
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  #2  
Old 10-07-2011, 04:31 PM
Me007gold Me007gold is offline
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Join Date: Dec 2009
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Hitch: 5500lbs
Hitch with WDH: 7200lbs
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  #3  
Old 10-07-2011, 04:56 PM
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bartonmd bartonmd is offline
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2007 Chevy TrailBlazer LS
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Quote:
Originally Posted by Me007gold View Post
Hitch: 5500lbs
Hitch with WDH: 7200lbs
That's what the hitch is rated to tow, not what the vehicle is rated to tow...

I don't think there's an I6 model that's rated to tow more than 6k... The V8 SWB models are rated up to 6800, IIRC, depending on ratio...

I thought it was in the manual? Gear ratio vs. wheelbase vs. 2/4WD vs. engine gives you the tow rating...

Mike
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Old 10-07-2011, 05:30 PM
Me007gold Me007gold is offline
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  #5  
Old 10-08-2011, 03:08 AM
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de3jr88 de3jr88 is offline
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2003 GMC Envoy SLT
Indigo Blue Metallic 4.2L I6 4X4
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The I6 2wd with 4.10 gear ratio is capable of 6300, I6 4wd with 4.10 can tow 6100. The towing capacity reduces by about 500lbs for each step down in gear ratio to 3.73 and 3.42.

And yes, your hitch capacities and vehicle capacities are almost never the same. Always go by the lower capacity and you will not only be safe, but legal as well.
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  #6  
Old 10-08-2011, 10:05 AM
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bartonmd bartonmd is offline
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2007 Chevy TrailBlazer LS
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Quote:
Originally Posted by de3jr88 View Post
The I6 2wd with 4.10 gear ratio is capable of 6300, I6 4wd with 4.10 can tow 6100. The towing capacity reduces by about 500lbs for each step down in gear ratio to 3.73 and 3.42.

And yes, your hitch capacities and vehicle capacities are almost never the same. Always go by the lower capacity and you will not only be safe, but legal as well.
Thanks! I couldn't remember off the top of my head, so I went to the manuals section of this website (or could have gone to my owners manual, like the OP should have), and copied and pasted the pages from the manual into 1 JPG file, uploaded it to my Picasa page, then posted here:

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  #7  
Old 10-08-2011, 08:10 PM
jkust jkust is offline
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2007 Buick Rainier
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Doesn't seem logical that the SS with 4.10 tows the same as the 5.3 with 3.73. Wonder which part is limiting the capacity.
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  #8  
Old 10-08-2011, 10:12 PM
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bartonmd bartonmd is offline
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2007 Chevy TrailBlazer LS
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Quote:
Originally Posted by jkust View Post
Doesn't seem logical that the SS with 4.10 tows the same as the 5.3 with 3.73. Wonder which part is limiting the capacity.
The effective load goes up with more power applied... The SS has ~100 more HP than the 5.3, and will be harder on parts...

Mike
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  #9  
Old 11-06-2011, 06:56 PM
Duaner Duaner is offline
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2002 Chevy TrailBlazer LS
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just wondering what is the best way to find out what the axle ratio is, unfortunately I do not have the original documents for my vehicle.
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Old 11-06-2011, 06:59 PM
Me007gold Me007gold is offline
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Originally Posted by Duaner View Post
just wondering what is the best way to find out what the axle ratio is, unfortunately I do not have the original documents for my vehicle.
Under the resources tab at the top of the page is a link for RPO codes, those codes will correspond with a decal in your glove box. One of those codes will tell you what ratio you have
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