Jump to content

Changed rear fluid


Recommended Posts

Last night I changed the fluid in the rear end and I was only able to fill it with 3qts? I thought that these diffs took between 3.5 and 4 qts to fill. I let it drain for quite a while before I began refilling. Did I miss something? The truck in question is a 2001 2500HD

Link to comment
Share on other sites

From what I understand, the 6.0 has a smaller rearend than the 8.1/DMAX trucks. The 6.0 has a 10.5 and the 8.1/DMAX has the 11.5.. Not sure if that would cause a difference in the amount of fluid, but I do know my 8.1 took 4 qts.

Link to comment
Share on other sites

From what I understand, the 6.0 has a smaller rearend than the 8.1/DMAX trucks. The 6.0 has a 10.5 and the 8.1/DMAX has the 11.5.. Not sure if that would cause a difference in the amount of fluid, but I do know my 8.1 took 4 qts.

 

 

 

 

 

This is exactly right! The reason is that the 6.0L trucks have the smaller rear axle size as previously stated. When I did mine is was right around the 3 quart mark as well. :chevy:

Link to comment
Share on other sites

Sorry for 'jacking your post, but I was wondering how easy or tough it is to change the diff fluid in the G80. Is there a drain plug, or a lower bolt that you can pull to drain it? Or do you have to drop and reseal the pan? I'd like to change mine over to synthetic soon. I just turned 20,000 miles.

Thanks!

71gmc

Link to comment
Share on other sites

I believe I've heard some of the older trucks have plugs and some of the newer ones do not. My first change we drained via the plug and still took the cover off and cleaned her up. None of it is all that difficult, and I'm not particularly mechanically inclined.

Link to comment
Share on other sites

My 03 2500HD with the 11.5" rear end has the drain plug at the bottom of the case and agree it is SO MUCH nicer than having to pop the cover off. BTW the newer one are already filled with synthetic fluid aka grape juice. I drained mine after a break in and refilled it with 4qts of Amsoil Series 2K

Link to comment
Share on other sites

Here is the Gm capacities list for 2001 4x4 C&K trucks.

 

Capacities - Approximate Fluid

Application

Specification

 

Metric

English

 

Axle Capacities

 

Front Drive Axle (8.25")

1.66 liters

1.75 quarts

 

Front Drive Axle (9.25")

1.73 liters

1.83 quarts

 

Rear Drive Axle (8.6")

2.28 liters

2.41 quarts

 

Rear Drive Axle (9.5")

2.6 liters

2.75 quarts

 

Rear Drive Axle (10.5")

2.6 liters

2.75 quarts

 

Rear Drive Axle (11.5")

3.62 liters

3.83 quarts

 

Hope this helps :chevy:

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.



×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.