Q: My 4WD is not engaging. Is a 2007 Silverado have electronically controlled axle actuator or vacuum? Or is my problem in the hubs?

asked by on

Wont fo into 4wd. No front wheel spin or mobement at all.

My car has 238 miles.
My car has an automatic transmission.

Hi there. The actuator on your 4WD system to your vehicle is electronic. Most of the Silverado 2500 model Chevrolet trucks have issues with the actuator failing in the front axle due to weather and road conditions. Check the harness to the actuator and make sure that it is connected to the actuator. If a tree limb was ran over, its possible to rip the wiring out of the actuator. If the wires are intact to the actuator, the I recommend replacing the actuator before replacing the hubs. If you have a grinding noise in the front by the wheels, then the locked hubs have worn teeth and needs replaced. If you need further assistance with your 4WD not working, 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. My 4WD is not engaging. Is a 2007 Silverado have electronically controlled axle actuator or vacuum? Or is my problem in the hubs?

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: Service ABS/Traction control/Active Handling messages on DIC

Your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car's ECU. When the ECU...

Q: Replaced timing belt about 2 days later set a code P2649 rocker arm actuator control circuit high bank 1 where is this part? 2003 Honda Accord

Hello - the P2649 error indicates a failure of the actuator circuit for the variable rocker arm mechanism. This mechanism changes valve opening for the engine, improving power and fuel efficiency. It is operated by engine oil pressure and a...

Q: Rough Starts & Idle

The fuel pump code for the secondary fuel circuit fault may be the fuel pump module on the cross member under the truck. The module can go bad and cause no fuel pump operation intermittently. The engine vacuum line from...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
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.