Front Axle Lubricant Level Inspection

Raise and support the vehicle. Lifting and Jacking the Vehicle
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{without RC1} Remove the underbody skid shield:
1. Underbody Skid Shield Bolt (1) - Remove [4x]
2. Underbody Skid Shield (2) - Remove
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{with RC1} Remove the underbody skid shield:
1. Underbody Skid Shield Bolt (1) - Remove [2x]
2. Underbody Splash Shield Bolt (2) - Remove [2x]
3. Underbody Skid Shield (3) - Remove
Courtesy of GENERAL MOTORS COMPANY

Front Differential Carrier Oil Filler Plug (1) - Remove
Inspect the axle lubricant level, it should be 16 - 22 mm (0.6-0.9 in) below the plug opening.
If the level is low, add axle lubricant until the level is 16 - 22 mm (0.6-0.9 in) below the plug opening. Use the appropriate axle lubricant: Adhesives, Fluids, Lubricants, and Sealers

CAUTION:

Front Differential Carrier Oil Filler Plug (1) - Install and tighten - Fastener Specifications
Courtesy of GENERAL MOTORS COMPANY

{with RC1} Install the underbody skid shield:
1. Underbody Skid Shield (3) - Install
2. Underbody Splash Shield Bolt (2) - Install and tighten [2x] - Fastener Specifications
3. Underbody Skid Shield Bolt (1) - Install and tighten [2x] - Fastener Specifications
Courtesy of GENERAL MOTORS COMPANY

{Without RC1} Install the underbody skid shield:
1. Underbody Skid Shield (2) - Install
2. Underbody Skid Shield Bolt (1) - Install and tighten [4x] - Fastener Specifications
Remove the support and lower the vehicle.