Step by step instructions how to change your rear differential fluid in a 2005 Chevy Trailblazer LS with 4x4. This is a simple and straightforward job but it took about 4 hours to complete due to corroded bolts.

Expense:
Differential gasket - $28.11
Gear oil - $13.49 x 2 = $26.98
Dealership quote - $144.95

Torque specs:
Rear differential cover bolts: 20 ft-lbs

Disclaimer:
I am not a professional or formally trained mechanic. This video is for informational purposes only. Follow these instructions at your own risk