Your Sierra is equipped with a transmission and transfer case designed to withstand heavy lifting. They are what allow you to haul around heavy loads. Your Sierra's transmission parts need to be replaced occasionally. AutoAnything has the parts you need at a price you can afford.
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The transfer case sends power to the wheels from the transmission via the drive shaft. It synchronizes the difference between the front and rear wheels. The transmission acts in a similar fashion to the gears on a multi-speed bicycle. The transmission harnesses the power of the engine and transfers it to the transfer case where it's doled out to the wheels. These parts get a lot of wear and eventually need to be replaced. AutoAnything sells GMC Sierra replacement transmission and transfer case parts with a 1-Year, Lower Price Guarantee.
Popular GMC Sierra Transmission & Transfer Case Part Numbers