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Chevy Colorado and GMC Canyon Axles and Differentials

11 messages,  Last post on Sep 27, 2009 at 7:29 AM

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#2 of 11 Re: Locking Differential [lvrob] by lvrob Jul 13, 2007 (8:07 pm)
Replying to: lvrob (Jul 13, 2007 7:59 pm) Thought I'd add this info on differentials I found on the web:  "Unfortunately, limited slip differentials (LS), available as options for many 4x4 in the US are offered by sales people as "locking differentials". A confusing term because nothing on these differentials is LOCKING. They are by far inferior to a differential that is truly (manually or automatically) lockable. If you have to decide whether to get a "locking differential" (LS) if available as an option on your new truck I would recommend getting it, because it is still better than not having anything at all. To repeat: "locking differentials" are limited slip differentials that are not to be confused with differential lock! Differential lock = differential locker = diff lock = diff locker = locker It seems to me, that manufacturers and dealers prefer to use the term "locking differential" over the correct term "limited slip differential" because it sounds more like the real thing - even though it is not. Is this already consumer fraud?   Now here is a twist to the locking differential story: When Chevy advertises its trucks with an optional rear locking differential - it indeed is a differential that locks up (automatically). In the 80's it was sold as a Gov-Lok for a while named Command-Traxx and is available in some Chevy trucks as G80 option. It is not manually activated as in Dodge, Jeep and Mercedes - it locks up automatically. It is a hybrid of a clutch type limited slip unit combined with a flyweight governor that is able to lock up 100%.   This makes me very interested in buying a Colorado or Canyon with the G80 option locking differential, interested in owners experiences.
#3 of 11 Re: Locking Differential [lvrob] by poncho167 Jul 21, 2007 (10:46 am)
Replying to: lvrob (Jul 13, 2007 7:59 pm) I am not sure what is used on the Colorado, but the Silverado has the optional Eaton rear-end which is the best rear-end available for true 4-wheel drive. Replies to this message: lvrob (Jul 21, 2007 1:47 pm) fas (Jan 19, 2008 6:00 pm) poncho167 (Jan 20, 2008 6:31 am)
#4 of 11 Re: Locking Differential [poncho167] by lvrob Jul 21, 2007 (1:47 pm)
Replying to: poncho167 (Jul 21, 2007 10:46 am) GMC's website has the Eaton locking differential advertised. Both Canyon & Colorado offer the locking rear differential in 2 wheel Drive. I first became aware of it watching Motor week, they showed a pretty impressive demo. Replies to this message: fas (Jan 19, 2008 6:00 pm) poncho167 (Jan 20, 2008 6:31 am)
#5 of 11 G-80 Locker by greenjeanz Jul 30, 2007 (4:44 pm)
I have a 07 colorado,4x4,z-71 with the eaton g-80 locker.It works as advertised,and does it very quietly and smoothly.It got a good workout this past winter in several feet of fresh snow (with stock a/t's)with no problems.During this summer,we have been off road with it,and have yet to use 4 wheel drive,because of the locker.It is far superior to anything I have owned to date,and I'm an old fart. Replies to this message: lvrob (Jul 30, 2007 7:38 pm)
#6 of 11 Re: G-80 Locker [greenjeanz] by lvrob Jul 30, 2007 (7:38 pm)
Replying to: greenjeanz (Jul 30, 2007 4:44 pm) Thank you,              Great info, the g-80 sounds for real when you haven't had to kick in 4 WD.
#7 of 11 Re: Locking Differential [lvrob] by fas Jan 19, 2008 (6:00 pm)
Replying to: lvrob (Jul 21, 2007 1:47 pm) I have an '05 I5 crew cab 4X4 and have the "locking " rear. Well 2 weeks ago, it went back to chevy because the rear really locked up. Coming out of my driveway. It took 2 weeks for them to get it back. They had to replace the complete rear (gears, bearings and clutches) It was under warrantee. It is really a 'positraction rear" (this what the service mgr told me). It handles much berrer on wet roads. Actually, I don't think the rear was ever right since I bought it new BTW, GM is not calling this a recall, they only have recalls for safty issues! Replies to this message: poncho167 (Jan 20, 2008 6:31 am)
#8 of 11 Re: Locking Differential [fas] by poncho167 Jan 20, 2008 (6:31 am)
Replying to: fas (Jan 19, 2008 6:00 pm) Is it that optional Eaton rear end that has been praised in tests against its foreign rivals who don't offer the same kind of traction when the going gets rough.
#9 of 11 Re: Locking Differential [lvrob] by toofast1 Jan 22, 2009 (12:21 am)
Replying to: lvrob (Jul 13, 2007 7:59 pm) i have an 07 colorado 4x4 . Window sticker reads auto locking rear diff.. I'v never heard any noise and it always leaves 2 nice black marks w/ 265/75/16 tires in 2 wheel drive on hard takeoff.
#10 of 11 locking differentials by gdhuff1 Jun 04, 2009 (7:50 pm)
Can I purchase a g80 locking differential for my 07 Colorado on line?
#11 of 11 locking rear / differential by srthomsen Sep 27, 2009 (7:29 am)
The automatic locking differential on the canyons/colorados is designed to sense a loss of or lack of traction at ONE wheel versus the other and will lock at the time that those preset parameters are reached.   It doesn't have anything to do with whether or not you can lay down 2 stripes of rubber on the road.   The automatic locking differential also will REDUCE available engine power when it is actuated. It works good BUT there are times when a locked axle & full available power can be an asset.   There needs to be a module mod to allow full power with the axle locked.

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