Getting Hands-On With Transfer Case Troubleshooting

If you've noticed your 4WD isn't engaging like it used to, or there's a suspicious hum coming from under your floorboards, it's probably time for some transfer case troubleshooting before a small annoyance turns into a major repair bill. Most people don't think much about their transfer case until it stops working, but this heavy-duty gearbox is what actually makes a four-wheel drive a four-wheel drive. It takes the power from your transmission and decides whether it's going just to the back wheels or splitting it up between the front and rear. When it starts acting up, your off-road weekend or your ability to get through a snowstorm is pretty much toast. ...

February 26, 2026 · 7 min · Smeloff Najun