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?

A: Hello. It sounds like some damage has been ...

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: Have possibly been driving for a year without an air filter

I personally do not like the aftermarket oil bath type of air filters with vehicles that have a mass air flow sensor. The oil that comes through the filter can contaminate the mass air sensor which would require regular cleaning...

Q: Car idle is erratic and exhaust gas smells strange.

Hi There! It sounds like you may have a dirty or failing idle air control valve causing your engine idle to fluctuate and eventually stall. In the mornings it is normal for the engine idle to be a bit higher...

Q: I need to now if my 2001 GMC Sierra 1550 4WD had a 3 or 4 spline pitman arm.

Hi there. To see if the pitman arm has 3 or 4 splines, check the splines on it with the nut off. Use a flashlight and look at the splines to see if there are 3 large flat areas or...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...