This PML 12 bolt GM AAM differential cover is designed to replace the stock cover on these vehicles:
- 2014 to 2018 Silverado 1500
- 2014 to 2018 Sierra 1500
- 2014 to 2018 GMC/Chevy SUVs (modifications needed for Escalade, Suburban, Tahoe, Yukon!)
- 2019 models may be able to use this cover or may have the newer GM 9.5 axle (see note below)
Always check your vehicle to verify configuration and clearance. Configurations vary. Some trucks have the GM 8.5 10 bolt differential.
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):
- 2014 to 2018 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.
Tow Package: Trucks with the optional tow package usually include the 9.76 inch ring gear differential. These cover is the same.
2019 and newer models: May use a similar 12 bolt rear cover that is slightly larger and not compatible with this cover. The GM part number for the gasket for this differential is 22943110. If you have a 2019 and newer with a different OEM gasket part number, see PML Part Number 11172.
Stock cover for GM AAM 9.5, 9.76 compared to stock cover for new GM 9.5:
Click on image to view larger. Area around and below fill hole is different.
Number of Bolts: 12 bolts
Volume: 0.6 quarts over stock, approximately
Dimensions: Click here for dimensions.
PML designed this rear differential cover for 2014 to 2019 Chevy Silverado and GMC Sierra 1500 trucks and SUVs. Some 2019 models may have newer GM 9.5 differential, see Applications.
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
Optional Temperature Sensor Machining
This differential cover has an undrilled boss for an aftermarket temperature sending unit. Optionally, PML can drill and tap a 1/8 NPT hole. The boss is located on the side below the fill hole.
Stock Covers
These are pictures of the stock cover for 2014 Silverado 1500s.
- The cover on the left is from a 2014 Silverado 1500 5.3L Crew Cab.
- The cover on the right is from a 2014 Silverado 1500 6.2L Crew Cab with the Trailer Package and the 9.76 rear end.
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
PML Differential Cover Compared to Stock
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