top of page

2007-2013 Silverado: Rear Differential Service

Time: 30min-1hr

Difficulty: easy-moderate

Cost: $30-150 (oil preference, gasket replacement)


High temperatures and heavy loads break down the protective properties of gear oil over time. Gear wear and moisture from venting to atmosphere further contaminate the fluid which can lead to leaks and premature part failure.


Replacing the rear differential fluid every 30-60,000 miles is good maintenance. Frequent start/stop driving, towing, high temperatures, or exposure to heavy dust or water might merit the earlier end of the range, while straight-and-level commuting would allow for a stretched-out interval.


While some rear differentials have a drain plug, most do not. The rear cover is removed to drain the fluid and inspect the gears. The cover is then resealed, installed, and fluid added through the fill hole.

If the fluid capacity is not known, general practice is to fill the differential with the recommended gear oil to just below the fill hole (approx 1/2"). This allows for fluid expansion when hot without overpressuring the seals or causing the oil to foam and cavitate.

The video below shows the service method on a 2007-2013 generation Chevy Silverado 1500.

If you redirect to Amazon through my site and purchase within 24 hours, I get a referral credit. Thanks for supporting the channel!

Rear Differential Cover Gasket

GM Rear Axle Housing Cover Gasket 15860607 (verify fit on Amazon).

Gear Oil

75W-90 Synthetic Gear Lube

1/4" Socket Set

Great 1/4" socket set with ratchet and driver

Makita Drill & Driver Combo

Brushless 1/4" Impact and 1/2" Drill Combo (5.0Ah)

Disposable Shop Towels

Scott Blue Shop Towels in a Box


Aerosol brake and parts cleaner

Gasket Maker

Permatex Gear Oil RTV Silicone Gasket Maker

Teardrop Ratchet Set

1/4", 3/8", and 1/2" drive teardrop ratchet set by GEARWRENCH

Impact Driver Socket Adapters

1/4", 3/8", and 1/2" Socket Adapters for 1/4" Impact Driver

Disposable Gloves

8mil disposable work gloves

3/8" Torque Wrench

10 - 100 ft lb 3/8" drive torque wrench.

Bottle Pump

Quart and gallon bottle pump

bottom of page