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 November 26, 2016

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.

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

What others are asking

Grinding noise when steering left in reverse at low speeds.

I am working on this

2012 Chevy Camaro SS -MAF sensor replaced per OEM code; however, engine still idling rough Knocking from passenger side increases

A blocked oil passage can cause high oil pressure and of course lack of oil flow can cause engine noise. However, it is not clear from your inquiry if your oil pressure is really out of spec high. OBD-II codes...

I replaced my clutch and bleed my hydraulic clutch master cylinder. But when I put the truck in 2H and try to shift, I won't shift.

Hi there. There seems to be an issue with the transfer case on your vehicle. The transfer case may have a bent fork or the shifter synchronizer has broken teeth. I recommend seeking out a professional, such as one from...

My electric power steering went out, I can't fix it right now but need to drive the car on freeway to work 100 miles per day

As you may have discovered, you will not have much functionality or power assist when your electronic power steering system is not working properly. This can also be a very dangerous situation and is not recommended to be driven until...

What does the keyless entry remote do?

The keyless entry remote should always be kept with the keys for the vehicle as well. There are 3-4 buttons on the remote depending on the trim package. The button with a closed lock symbol will lock all...

Fuel pump running with car off

Hello. A fuel pump that stays on when the ignition is turned off can be caused by a few things. If you do not believe that the behavior is normal, then it may be possible that the the ignition switch...

Transmission shift hard after high speed driving but shifts normal after engine is off for a while.

Hi there. Transmission fluid should be flushed every 50,000 miles to help avoid issues like you are experiencing. So, it's probably a good idea to have your transmission fluid flushed and filter replaced, as the obstruction of debris or worn...

My 2001 tahoe wont reverse

Hi there. Most transmission problems like you've described can be resolved by having the transmission fluid flushed and filter replaced. Transmissions are hydraulic systems that rely on clean and efficient fluid to shift, allow acceleration and deceleration as well. However,...

Vehicle was sputtering and lost power. Gets spark, cranks but wont start

Hello. There are few things that I recommend you have a technician inspect. In order of probability your vehicle may have a bad mass air flow sensor, a bad crank position sensor, a bad throttle position sensor, or restricted fuel...

Related articles

How to Replace a Trunk Lock Actuator
A car trunk is secured by a trunk lock that uses an electronic or mechanical lock actuator. A bad actuator prevents the lock from working properly.
A Buyer’s Guide to the 2012 Chevrolet Tahoe
The The Chevy Tahoe has always been one of the most popular SUVs on the market, and this trend continued in 2012. As always, the vehicle proved to be reliable and powerful, with plenty of space and features that people...
2012 Chevrolet Silverado vs. 2012 Dodge Ram: Which One Should I Buy?
When you are looking for a way to get a load of mulch or gravel, or need to haul a large trailer or boat behind your vehicle, chances are you are looking for a truck. Trucks are not meant to...