Skip the auto shop - Our mechanics make house calls

Q: Transfer case trouble

asked by on

I got the truck with a transfer case that was locking up. So the "dealer" put another one and it stopped locking up but instead slowly rolls while in park and whines and slips on take off almost through first gear and then its fine. After a few months it burned out leaving me stranded out in the middle of no where. I got a rebuilt one from a place called transfer case express. I put it in and after the first day it started whining too but very faint. I have another rebuilt tcase waiting to go in but I need to find out whats going wrong before I mess this one up too.

The rolling while in park should not have anything to do with the transfer case as this is a separate piece of the drivetrain controlled by the transmission. There is a pawl on the end of the transmission shaft (assuming this is the stock 4L60E transmission) that should keep the vehicle in park. As to the whining sound, I would first check to be sure the transmission and transfer case both have the correct amount of fluid in them. This can also be caused by a transmission pump or potentially a torque converter that is going out as well. Lastly, I would also recommend checking the U-joints for excessive play as this can also cause a whining sound as you describe.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Factory anti theft device

Hi there. You might want to consult with a local automotive alarm company to see if they are able to complete this process for you. In most cases, the factory alarm system can only be disable by the factory or...

Q: Oil relief valve issue shortly after oil was changed

I'm curious as to what "weight" of oil they put in. Most manufacturers now warn against using anything heavier than 10W30 for oil pressure relief valve (overpressure on cold start) reasons. While this is not common, overpressure due to a...

Q: I have a '95 cavalier I recently unplugged the TCC sensor and I was driving then the car just stopped but engine was still running.

Hi and thanks for contacting YourMechanic. The torque converter clutch (TCC) solenoid is located in the transmission control module (valve body). The solenoid should be easy to remove without taking off the valve body. Remove the side oil pan to...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.