How to Change the Rear Drivetrain Fluid for a 2003 GMC Sierra?

Answer The rear, drive-train fluid is also known as the rear differential fluid. The rear differential fluid in the 2003 GMC Sierra keeps the rear differential gears and the rear axle cool and lubricated.... Read More »

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How to Change the Rear Differential Fluid on a 2003 GMC Sierra?

Changing the gear oil in the rear differential of your GMC truck will extend the life of the gears, bearings and seals in the rear end. Along with lubrication, the gear oil cools the gears and cond... Read More »

How to Inspect the Drivetrain in a GMC Sierra?

While the drivetrain on the GMC Sierra receives high ratings, there was a recall on 2005 models for the light on the manual transmission panel. Without proper notice, drivers may not know what gear... Read More »

How to Change Automatic Transmission Fluid in a GMC Sierra?

According to GMC maintenance guidelines, you should change the automatic transmission fluid in your Sierra every 30,000 miles if it is used under normal operating conditions. If you do a lot of tow... Read More »

How to Change a Hub Assembly on a 2003 GMC Sierra?

The hub assembly on a 2003 GMC Sierra mounts on the front steering knuckles and allows the brake rotors to turn. The hub assembly has sealed bearings inside that you cannot service. If you are havi... Read More »