GMC sierra. 4x4 differential question

will4831 · 02-02-2006, 09:50 AM

I have a 1996 GMC sierra 1500 4x4. I have a stock rear end and i'm wondering if anybody knows the stock gear ratio and how I can tell if it is a dana 60 or a Chevy rear end? Or what i can check to see what it is.

mrjohnwayne · 02-02-2006, 11:47 AM

More than likely it is a stock gm 10 bolt. I know they used to have a sticker in the glove box that had what the gear ratio was. If not it is on the door with the vin number and gvwr. As for what type of rearend it is there should be a metal tag on the differential housing or axle tube that'll give you more information on it

will4831 · 02-02-2006, 01:07 PM

it is a 10 bolt GM. I can't seem to find what the ratio is set at. Any other ideas? I guess i might be able to count turns after i mark the tire. Also, does anyone know where i can get a lock for my diff?

gmtech · 02-02-2006, 03:10 PM

Give me your vin number and I should be able to tell you the ratio.

hotrod69 · 02-02-2006, 06:39 PM

Do U Want A Locker Or A Limited Slip Posi Either Way Ther Are A Lot Of Places That U Can Get Them At Like Off Road Wharehouse, Summit, 4wheel Parts, And Many Other To Name A Few. Maybe Even Look At Your Local Rear End Shop They Might Be Able To Cut U A Good Deal On A Rebuilt Or Better

vanhal · 02-02-2006, 08:54 PM

look in the glove box there are rpo codes for that truck
if it says .....gt4 then you have 3.73
..................gt5 ...................4.10
..................g80 it is positraction also go to the search engine
production codes on gm trucks it will give you a whole list of codes

hope this will help you ..............................pete

will4831 · 02-02-2006, 09:24 PM

thanks. I got 3:73. GT4
My local shops don't carry anything. I would prefer an actual lock, but like a limited slip is better than nothing. If you guys know of somewhere i might be able to order something, let me know...

vanhal · 02-02-2006, 09:46 PM

glad to help all the way from ontario canada

will4831 · 02-02-2006, 09:53 PM

thanks! Beats markin the tire and countin turns.

will4831 · 02-05-2006, 04:32 PM

anybody know a website where i might be able to buy a lock?

02-02-2006, 09:50 AM	#1
will4831 Senior Member Join Date: Feb 2006 Location: South Dakota Posts: 127	GMC sierra. 4x4 differential question I have a 1996 GMC sierra 1500 4x4. I have a stock rear end and i'm wondering if anybody knows the stock gear ratio and how I can tell if it is a dana 60 or a Chevy rear end? Or what i can check to see what it is.

02-02-2006, 11:47 AM	#2
mrjohnwayne Senior Moderator Join Date: Apr 2005 Location: Texas Posts: 3,722	More than likely it is a stock gm 10 bolt. I know they used to have a sticker in the glove box that had what the gear ratio was. If not it is on the door with the vin number and gvwr. As for what type of rearend it is there should be a metal tag on the differential housing or axle tube that'll give you more information on it __________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4

02-02-2006, 06:39 PM	#5
hotrod69 Senior Member Join Date: Oct 2005 Location: NORTHERN CALIFORNIA Posts: 51	Do U Want A Locker Or A Limited Slip Posi Either Way Ther Are A Lot Of Places That U Can Get Them At Like Off Road Wharehouse, Summit, 4wheel Parts, And Many Other To Name A Few. Maybe Even Look At Your Local Rear End Shop They Might Be Able To Cut U A Good Deal On A Rebuilt Or Better __________________ *HOTROD* NOTHING LIKE DRIVING A CHEVY

02-02-2006, 08:54 PM	#6
vanhal Senior Member Join Date: Mar 2005 Location: ontario, canada Posts: 102	rear end ratio.s look in the glove box there are rpo codes for that truck if it says .....gt4 then you have 3.73 ..................gt5 ...................4.10 ..................g80 it is positraction also go to the search engine production codes on gm trucks it will give you a whole list of codes hope this will help you ..............................pete __________________ I am gm all the way ....... black 98 Z71 3 door short box 5.7

02-02-2006, 09:46 PM	#8
vanhal Senior Member Join Date: Mar 2005 Location: ontario, canada Posts: 102	wellcome glad to help all the way from ontario canada __________________ I am gm all the way ....... black 98 Z71 3 door short box 5.7

02-02-2006, 01:07 PM	#3
will4831 Senior Member Join Date: Feb 2006 Location: South Dakota Posts: 127	it is a 10 bolt GM. I can't seem to find what the ratio is set at. Any other ideas? I guess i might be able to count turns after i mark the tire. Also, does anyone know where i can get a lock for my diff?

02-02-2006, 03:10 PM	#4
gmtech Senior Member Join Date: Dec 2005 Location: farmville Va Posts: 348	Give me your vin number and I should be able to tell you the ratio.

02-02-2006, 09:24 PM	#7
will4831 Senior Member Join Date: Feb 2006 Location: South Dakota Posts: 127	thanks. I got 3:73. GT4 My local shops don't carry anything. I would prefer an actual lock, but like a limited slip is better than nothing. If you guys know of somewhere i might be able to order something, let me know...

02-02-2006, 09:53 PM	#9
will4831 Senior Member Join Date: Feb 2006 Location: South Dakota Posts: 127	thanks! Beats markin the tire and countin turns.

02-05-2006, 04:32 PM	#10
will4831 Senior Member Join Date: Feb 2006 Location: South Dakota Posts: 127	anybody know a website where i might be able to buy a lock?

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