|
04-07-2013, 08:08 AM
|
#1
|
Member
Join Date: Jul 2012
Posts: 85
|
2007 Chev 3500 DRW: any rear diff issues?
We spotted a 2007 3500 4WD long bed DRW Duramax with 41k miles. The truck appears to have been a suburban soccer-mom vehicle. No 5th wheel hitch or gooseball yet. I have seen a negative reference in this forum regarding chev rear-ends and heavy towing. I do not know the axle ratio yet but I am hoping for something around 4:10 because we are scouting a vehicle to tow a full-size 5er.
Does anybody know if 1-Ton Chevy's have rear end problems when towing heavy? If so, is it preventable or correctable? Thanks in advance.
Thanks in advance
|
|
|
|
Join the #1 RV Forum Today - It's Totally Free!
iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!
You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!
|
04-07-2013, 08:17 AM
|
#2
|
Senior Member
Join Date: Jan 2013
Posts: 371
|
Suggest you find a Duramax forum and read all about it. While the 4:10 ratio is good for towing, often it is not necessary and can a real mileage killer when using the truck for purposes other than towing.
__________________
'92 Gulf Stream Sun Voyager. Tweaked 5.9 Cummins, complete interior makeover (previous owner).
|
|
|
04-07-2013, 10:40 AM
|
#3
|
Senior Member
Join Date: Jul 2011
Location: Lexington NC
Posts: 1,952
|
I am almost certain that chev/GMC trucks with duramax Allison have only came with 3.73 rear end from day one.
Chad
|
|
|
04-07-2013, 12:18 PM
|
#4
|
Senior Member
Texas Boomers Club
Join Date: Jan 2000
Location: Somewhere in the lower 48
Posts: 2,308
|
from experience. I had a 2005 GMC 3500 with the 3:73 rear (back then the 3500 only came in a dually with 3:73). There was one hill in particular in eastern PA (these are hills, not mountains) and I could not maintain speed (65mph) pulling a 17K 5er. Like I said, must my experience.
Yes the 4:10 or 4:30 will hurt your mpg but you need to decide where you want to give up. MPH when towing or MPG.
__________________
John, Joyce and Zoie (our 17# Guard Dog)
2018 Ford F-450 KR / 2019 Mobile Suites 40KSSB4
Fulltiming since 2008 and loving it
|
|
|
04-07-2013, 08:15 PM
|
#5
|
Senior Member
Join Date: Apr 2004
Posts: 2,228
|
GM and Dodge both use the AAM 11.5" rear axle in their 2500/3500 SRW and DRW lines for over 10 years now . I've seen no reported issues with these big rear axles in GM or Dodge diesel forums.
The only negative things I've seen posted is GM derated the DRW RAWR from 8700 lbs to 8200-8500 ?? lbs I believe. GM raised them in '11 to 9375 RAWR. However even at those lower rating it will carry most hitch loads from a RV out here.
__________________
'03 Dodge 2500 Cummins HO 3.73 NV5600 Jacobs
'98 3500 DRW 454 4x4 4.10 crew cab
'97 Park Avanue RK 28' 2 slides
|
|
|
04-11-2013, 11:02 PM
|
#6
|
Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,593
|
I have an 02 Chevy (300hp) Duramax/Allison dually, long-bed, crew-cab, 4WD. Our 5ers GVW is 15,500#, it scales near 14,500# when we leave home. We average towing around 8-10,000 miles annually. I changed both diff. fluids at 80,000 miles and it was still the original color. I've never encountered anyone who admits to diff. problems when towing. FWIW, my 2002 only came with 4:10 gears. I get 10.5 mpg towing, 18.5 empty highway, 16 empty city driving. I would NOT want a lower ratio gear-set for towing. If you wish to ask your questions where you will receive the most feedback, go to dieselplace.com , register for free, and post your questions under the correct forum.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
|
|
|
04-12-2013, 03:07 PM
|
#7
|
Senior Member
Join Date: Apr 2012
Posts: 368
|
The 2007 early models are the Classic versions and have a better engine than the LMM engines that succeeded it in late 2007 and were used in the 2008-2010 trucks. The LMM had a poor emissions control design whereby raw fuel is injected into the cylinders to insure full combustion but the net effect was raw fuel being added to the motor oil. GM corrected with in 2011 with the LML engines were an additional injector was added to inject the fuel outside of the engine's cylinders.
|
|
|
04-14-2013, 08:16 PM
|
#8
|
Senior Member
Join Date: Dec 2012
Location: Swoope, VA
Posts: 362
|
I haven't heard of any issues with Chevy rear axles. I've had no issues in 165,000 with the one in my '05 Chevy dually.
The truck in question will have a 3.73 gear unless it's been changed by someone which isn't likely. That is the only gear available with a Duramax. I don't know if it's been that way all the way back to 2001 but it's been that way for a long time.
I use my 2005 Duramax (which has less power than an '07) to pull/haul 14,000. It does a fine job.
__________________
2022 Jayco Eagle 284BHOK, 2022 GMC CC Dually D/A, 2009 2500 Suburban, 2004 Rinker Captiva 232 boat
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|