Transfer Case Buyer's Guide

Do you want to learn more about GM transfer cases? This buyer’s guide is for you. In this guide, we’ll teach you everything you need about transfer cases, including:

  • What transfer cases are
  • How to identify a failing transfer case
  • The differences between OEM and aftermarket transfer cases
  • How to replace a transfer case on your GM vehicle

What Is A Transfer Case And Why Is It Important?

All 4WD and AWD vehicles have a transfer case. It’s a large oval-shaped part that’s mounted on a frame cross member. Its job is to transfer power from the transmission to all four wheels. In other words, it enables the 4WD or AWD system to work. Without a transfer case, your vehicle won’t get power at all four wheels.

For more information about GM transfer cases and how they work, check out this post.

How To Tell If Your Transfer Case Is Failing

If you have a hunch that your transfer case is failing, check out this diagnostic guide. The best way to diagnose the issue is give the transfer case a visual inspection. The guide will show you how to conduct a thorough inspection. It’ll also show you what to look for.

OEM Vs. Aftermarket Transfer Cases

Is it time to replace your transfer case? The first decision you need to make is whether to buy an OEM or aftermarket replacement unit. If you ask us, an OEM transfer case is the far better investment. It’s because:

  • OEM transfer cases always come with the same exact specifications as your original transfer case.
  • Aftermarket transfer cases aren't always exactly the same at the OE case.
  • GM builds OEM transfer cases with high quality materials. This helps ensure reliable and consistent performance for a long time.
  • Many aftermarket manufacturers build their transfer cases with low quality materials.
  • GM offers a comprehensive parts warranty for its transfer cases.
  • Many aftermarket manufacturers don’t warranty their transfer cases.

For a more thorough explanation of why OEM transfer cases are better than aftermarket ones, check out this comparison guide.

How To Replace A GM Transfer Case

If you have the right tools, replacing the transfer case on your GM vehicle may be something you can do at home. This post provides an overview of the replacement process. Basically, it involves:

  1. Lifting the vehicle
  2. Draining the transfer case fluid
  3. Replacing the transfer case

Do you have any questions about transfer cases that are not answered in this buyer’s guide? Please contact us. We’ll be happy to help!