Product Overview

Volume: 0.6 quarts over stock, approximately

Dimensions: Click here for dimensions.

Number of Bolts: 12 bolts

PML designed this rear differential cover for 2014 and newer Chevy Silverado and GMC Sierra 1500 trucks, vans and SUVs. Some 2019 and newer models may have newer GM 9.5 differential, see the APPLICATIONS section.

Benefits:

Heavy duty construction
Extra capacity
Fins for cooling
Drain hole and magnetic drain plug for easy servicing
New mounting bolts included
Works with Duragrip and similar aftermarket carriers when changing to 4.10 or deeper gears, no spacer needed

Applications:

This PML 12 bolt GM AAM differential cover is designed to replace the stock cover. 2019 and newer models may be able to use this cover or may have the newer GM 9.5 axle, see PML part number 11172.

Examples of vehicles that commonly have used this differential cover:

2014 to 2018, some 2019 and newer, Silverado 1500
2014 to 2018, some 2019 and newer, Sierra 1500
2014 to 2018, some 2019 and newer, GMC/Chevy SUVs (modifications needed for Escalade, Suburban, Tahoe, Yukon!)
2018 and newer Express and Savana Vans (check for clearance)

Always check your vehicle to verify configuration and clearance. Configurations vary.

GM OEM gasket: The GM OEM part number for the gasket that corresponds to this cover is 22943110.

Aftermarket Carriers: Cover works without spacer with Duragrip and many aftermarket carriers, which are required when changing to 4.10 or deeper gears. See Installations for an example.

Installation Note: Bracket for parking brake cable probably needs to be slightly moved or bent.

Modifications for SUVs (Escalade, Suburban, Tahoe, Yukon) and Similar:

2014 and newer Escalade, Suburban, Tahoe, and Yukon usually have a sway bar behind the stock cover that is very close to the stock differential cover. This cover has been modified to fit. See Installations for examples on Tahoe SUVs.
PML can modified the cover for a custom machining charge. Call for details.
If vehicle is lifted or has aftermarket sway or panhard bars, this cover may fit without modification.

2019 and newer models: May use a similar 12 bolt rear cover that is slightly larger and not compatible with this cover. To figure out which you have, try checking the OEM gasket part number or visually comparing your cover to the pictures below.

To check gasket part number:
Find out (call dealer, look on line) for the OEM gasket part number.
This PML differential cover, part number 11129, works with gasket GM AC Delco part number 22943110.
To check visually look near the fill/level check hole.
The FIRST image shows 2014 and newer stock cover for GM AAM 9.5, 9.76 and this PML Part Number 11129 is the replacement cover.
The SECOND image shows the stock cover for new GM 9.5 2019 and newer vehicles and PML Part Number 11172 is the replacement cover for that.

Click on image to view larger. For example, note that the area around and below fill hole is different.

For the newer cover, see PML Part Number 11172.

Tow Package: Trucks with the optional tow package usually include the 9.76 inch ring gear differential. These cover is the same.

Click on image to view larger.

Inside of PML Cover

Click on image to view larger.

The PML differential cover follows the same general shape of the stock cover. The interior is mostly smooth.

Space for the extra capacity is at the bottom

Comparing PML Cover to Gasket from 2019 Silverado

Some 2019 and newer trucks have a slightly larger GM 9.5 rear differential cover. The gasket for a 2019 Silverado 1500 is shown compared to this PML differential cover.
2019 GM 12 Bolt Rear Differential Cover Gasket Compared to PML Cover for 2014 to 2018