Skip the auto shop - Our mechanics make house calls

Q: Four wheel drive malfunction - 2003 Chevrolet Silverado 3500

asked by on

I accidentally drove on the highway at the speed around 65 mph with the four wheel drive on. I was driving a couple of miles on the dry pavement, while the vehicle made unusual noises. The noise disappeared after several more miles. Now, when I switch to 4HI, there is no locking at all. The selector becomes illuminated as though it works. How much damage have I cause? Would I have to get something replaced?

Hello. It sounds like some damage has been done to the transfer case or the front differential. The damage sounds pretty bad if the 4HI is not locking into place. More than likely, the transfer case and/or front differential will need to be rebuilt or replaced. I recommend having a certified technician, like one from YourMechanic, inspect your four-wheel drive system and complete a diagnosis of the shifting trouble.

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

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: Won't shift out of park 2000 Chevrolet Silverado 2500

Some vehicles have hidden shift lock solenoids. These are particularly on the vehicles that have a column shifter. It is possible that the steering column trim will have to be removed in order to access it. I would recommend having...

Q: Smoke coming from engine

Hello. There are two different types of fluid that would cause smoke to come out from the front of your car. If oil is leaking down from the valve cover gasket or oil filter, and onto the exhaust, this will...

Q: Truck will not go into gear.

The shift linkage inside the transfer case may of broke or came loose from driving the vehicle on the highway in 4x4. I have seen entire transfer cases destroyed inside from driving on the highway locked into 4x4. I recommend...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...