Q: 4x4 not working. Replaced transfer case motor, control module, and tested the 4WD switch. Everything is good.

asked by on

Will not shift into 4x4

My car has 12000 miles.
My car has an automatic transmission.

Hi there. The synchronizer or fork inside the transfer case may be damaged causing the transfer case to not engage the front axle. Try to put the transfer case in 4 HI and see if the vehicle is engaging. If not, try to put the transfer case in 4 LOW and see if the vehicle will only travel at a low speed. If so, jack up the vehicle and have all 4 wheels off the ground. If the front driveshaft turns when the 4WD is engaged, then there is a problem with the front axle. If the 4WD is engaged and the front driveshaft is not turning, then there is a problem with the transfer case. If you need further assistance with your 4WD unit, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. 4x4 not working. Replaced transfer case motor, control module, and tested the 4WD switch. Everything is good.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car won't start but when attempting to start it makes a repetitive "pop" sound.

Hi there. What could be happening is the engine has either a large vacuum leak or the timing chain has skipped a tooth making a camshaft out of adjustment. First look all over the engine for any possible vacuum leaks,...

Q: Why would I continue to have a P0106 code in my 2009 Ford Explorer

If you are continuing to get this code then you either got a bad sensor or you have an issue with a clog in the EGR lines. Both are common. Also, if the check engine light was not cleared after...

Q: Hard clunk noise shifting/downshifting in 2nd & 3rd

Hello there, thank you for asking about your 2006 GMC Sierra 1500HD. Since you say it only happens when shifting between 2nd and 3rd, my guess is that the noise is internal to the transmission. A faulty shift solenoid could...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.