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Old 01-25-2004, 05:38 PM   #1 (permalink)
cplane
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I was curious about the new G-80 rear end. What has changed , and what makes it superior to the older governor lock style differential?
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Old 01-25-2004, 06:14 PM   #2 (permalink)
burkm
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I dont recall where I read the decription. but the last info I saw was that the design wasn't changed but made stronger when the switch to AAM rearends was made. I've got a 93 Z-71, 99 tahoe and an 03 Dmax, This Gov lock seems to react quicker than the others did when new. I've only had one problem with the Gov locks which was my fault towing to much weight on a dirt road in my 93 1/2 ton. the case cracked and parts went everywhere and took out the whole rearend. that was with 120,000 miles on it so I guess it lasted along time the way I drove it.


If ya find out anymore please post the info. I'm considering changing to a E-locker in the 03 so I can control when it locks.
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Old 01-25-2004, 07:27 PM   #3 (permalink)
CMC-GMC
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For what it's worth... I've noticed a substantiol differance from my '02 and '04 locker rear ends.


The 02 would chatter and grag at the oddest of times. The 04 is very smooth and I hardly know I have a locker.


cmc
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Old 01-25-2004, 07:53 PM   #4 (permalink)
lasergrave
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IF you get a GMC it has an Eaton electronic locking unit looks like a coil locks the two axles together until 20 mph look at Eaton.com
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Old 01-25-2004, 09:49 PM   #5 (permalink)
John R
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Quote:
Originally Posted by lasergrave
IF you get a GMC it has an Eaton electronic locking unit looks like a coil locks the two axles together until 20 mph look at Eaton.com

So is the Chevy different?
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Old 01-26-2004, 08:23 AM   #6 (permalink)
Voodoo
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Quote:
Originally Posted by John R


Quote:
Originally Posted by lasergrave
IF you get a GMC it has an Eaton electronic locking unit looks like a coil locks the two axles together until 20 mph look at Eaton.com

So is the Chevy different?


Looks as both are the same;


Chevy:


Standard: GT4 Rear axle, 3.73 ratio
Option: G80 Differential, locking, heavy-duty, rear


GMC:


Standard: GT4 Rear axle, 3.73 ratio
Option: G80 Differential, locking, heavy-duty, rear


Also there's a GT5 rear axle, 4.10 ratio for Chevy and GMC, but it's not availble with the Duramax (I wish it was). Edited by: Voodoo
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Old 01-26-2004, 11:17 AM   #7 (permalink)
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I do not have one.


How much more was this option?
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Old 01-26-2004, 12:11 PM   #8 (permalink)
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On my '01 it wasn't much, I think it was only about $200 extra. have to check the sticker in the file.
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Old 01-26-2004, 12:36 PM   #9 (permalink)
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My 01 was $295, and I would have gladly paid another $295 for one in the front too.....if it was available


JP
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Old 01-26-2004, 12:40 PM   #10 (permalink)
Zeeb
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Quote:
Originally Posted by NoWake200


I do not have one.


How much more was this option?


NoWake,


You don't really want to know the answer to that one do you?


The retail on the option was $295.00. But, if you ordered the HD package, it included the Duramax, the Allison for $1200.00 and the Eaton for a total of $1500.00 extra, then there was an HD package discount for $1000.00. So you got the Allison and the Eaton for $500.00 by ordering the package instead of individual options.


I didn't find that many trucks around here to look at, but all of them had the HD package with the Eaton and the discount.
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