Identifying rear diff 2020 6.2 Z71

[johnnyquick]

Hi, guys another question, planning on both diffs, transfer case and Trans fluid and filter, but not sure what and how much fluid to buy.

Was planning on Amsoil fluid

I have a 2020 6.2 with Z71 and locking rear diff 3.23 gears.

I looked for a RPO code sticker but don't see one anywhere.

Do you know how to tell which of the 2 diffs 8.6 or 9.5 ring gear shown on the fluid websites I have?

TIA

Edited August 10, 2024 by johnnyquick

[CamGTP]

The 12 bolt rear ends are 9.5's.

 

There is no RPO code stickers anymore, they stopped that around 2017 on GM's.

[johnnyquick]

46 minutes ago, CamGTP said:

The 12 bolt rear ends are 9.5's.

 

There is no RPO code stickers anymore, they stopped that around 2017 on GM's.

Thanks, I will count the bolts tomorrow morning!

[JimCost2014]

Believe 8.6 would be a 10 bolt, 9.5 would be a 12 bolt.

[redwngr]

RPO sticker has been replaced with a QR code.

QR code is on one of the labels at the bottom of the drivers doorpost. 

 

Most any smartphone camera will be able to read the code 

[e.texerado]

this helped me with parts numbers. When I scanned rpo sticker, it doesn't provide all info.

 

 

[newdude]

On 8/9/2024 at 9:35 PM, johnnyquick said:

Hi, guys another question, planning on both diffs, transfer case and Trans fluid and filter, but not sure what and how much fluid to buy.

Was planning on Amsoil fluid

I have a 2020 6.2 with Z71 and locking rear diff 3.23 gears.

I looked for a RPO code sticker but don't see one anywhere.

Do you know how to tell which of the 2 diffs 8.6 or 9.5 ring gear shown on the fluid websites I have?

TIA

 

 

9.5" or 9.76" axle on the 2.7, 3.0, 5.3 and 6.2 engines.  The 4.3 was the only engine on this gen that uses the 8.625".  That engine is gone from pickups, so is the 8.625".

 

 

Edited August 18, 2024 by newdude

[Gangly]

You can look at them and tell:

 

[Gangly]

And since you are doing your fronts as well...