Rear pinion nut socket size?

[StraightShooter]

I've got a rear pinion seal leak on my 19 3500. Does anyone happen to know the socket size for the rear pinion nut? I have the 12" AAM and its bigger than 36mm, like the 11.5s.

 

[samneric]

I have the same problem on my 2019 1500 classic anyone have the answer?

 

[20Max]

I've got a rear pinion seal leak on my 19 3500. Does anyone happen to know the socket size for the rear pinion nut? I have the 12" AAM and its bigger than 36mm, like the 11.5s.

Did you ever find the correct socket size?

 

[20Max]

1-9/16” is the socket size for the 12” AAM rear pinion nut. 12 point required.