How to replace front axle actuator on Chevy Silverado?

The experts at 1A Auto show you how to replace the 4×4 Axle Actuator on your 99-06 Chevy Silverado and GMC Sierra. Remove the four 15 mm bolts that are securing the skid plate. Using a flat blade screwdriver, pry up on the little latch and unplug the actuator. Using a pair of large slip joint pliers, grab the bolt and unscrew counterclockwise.

What is the actuator on a 4 wheel drive?

The actuator is a component found mostly on modern four wheel drives and is designed to electronically engage 4 wheel drive. It accomplishes this by means of a small electric motor bolted onto the transfer case that shifts a pin in place to lock the center transfer differential.

How to install a front axle shift actuator?

Using a flat blade screwdriver, pry up on the little latch and unplug the actuator. Using a pair of large slip joint pliers, grab the bolt and unscrew counterclockwise. Once you’ve got it started, it should come right out. Work in reverse of the installation process.

What’s the problem with my 96 Chevy 4×4 Z71?

I changed the actuator on the differential and also changed the encoder (transfer case motor) like some peo … read more ’96 Chevy 4×4 Z71: truck will stay in 4high with indicator light always flashing. Selecting 2high light flashes truck stays in 4high then the 4high light flashes again. Same with trying 4low.

Is there a 4HI switch on a 1996 Chevy Z71?

Ok. i have a 1996 Chevrolet Z71 and my 4hi and 4lo switch just flashes but doesn’t stay lit. I changed the actuator on the differential and also changed the encoder (transfer case motor) like some peo … read more ’96 Chevy 4×4 Z71: truck will stay in 4high with indicator light always flashing.

When do Chevy 4 wheel drive actuators come out?

In stock on April 14, 2021. . Only 5 left in stock – order soon. . Only 5 left in stock – order soon. . Only 3 left in stock – order soon.

Do you have a push button 4×4 actuator?

With 8 people in the car, it was a little slippery sometimes. It was GREAT to have the ‘push-button’ 4×4 system. P.S. Does this mean that since my ‘burb is a ’99 model that I already have an electric actuator?

How to get 2 lo from a 4×4 actuator?

You get ‘2 LO’ by breaking the ground wire in the circuit IIRC…. The brown wire is a 12V supply wire…. I’m sorry to hear you had troubles, Chris. I looked up the price of the electric actuator – it’s very expensive for what it is.

What happens when the 4WD fuse is removed?

With the 4WD fuse removed from the side panel at the dash, the TC still shifts into all gears. The lights blink, but the shift is made and I can feel and hear the 4WD engage and work. What does this fuse do?

Where can I get a thermal actuator for my 4WD?

The thermal actuator is available aftermarket via part number TCA1 in the 2 wire form if you want to keep it simple. The retrofit kit (2 part numbers) is a little more pricey, but engages a lot more positively. If the actuator’s acting up we carry new ones on our website with free shipping.

What kind of actuator does my truck have?

I am pretty familiar with the larger plastic bodied actuators that are either tan or black, but they typically have a 5 pin plug. They have the circuit that indicates “Front axle lock” and also operate the motor inside the actuator. His truck being an ’89 is definitely a 2 wire actuator thermal from the factory.

What is the part number for a thermal actuator?

Why does my GMC front axle shift actuator not engage?

A VERY telling symptom that this particular part is your problem is if your 4WD engages when the weather is warm but either does not engage or takes a lot longer to engage when the weather is colder. On most vehicles you push a button for 4WD and an indicator light blinks until the actuator engages.

Where is the wiring harness on a GM Truck?

Use nylon tie straps to secure the fabricated harness to the main chassis harness between the transfer case and C101. On the full-size pickup and full-size utility models, replace the 2.2 m (88 in) pigtail harness that runs from the C151 connector under the hood to the transfer case.

How to repair a 1988 GM Truck wiring diagram?

Access our GM Full-Size Trucks 1988-1998 Wiring Diagrams Repair Guide by creating an account or signing into your AutoZone Rewards account. Once you sign in, follow these instructions to access our Repair Guides. Add your vehicle in Manage My Vehicles. Enter your vehicle details.

Where is the actuator wiring harness on a GM Truck?

STRAP THE JUMPER HARNESS AND THE SERVICE HARNESS TO THE TAB ON THE AXLE TUBE. 12376316 KIT, ACTUATOR WIRING HARNESS (88-96I K1,2) AXLE CODE;ZLS, ZLT, ZLW ZLX, ZLY 12376317 KIT, ACTUATOR WIRING HARNESS (96I-97 K1,2) AXLE CODE;ZWA, ZWB, ZWD ZWF, ZWG 12376318 KIT, ACTUATOR WIRING HARNESS (94-96I K3) AXLE CODE;ZLX, ZLY, ZLZ

Where is the service harness on a 1994 GM Truck?

CONNECT THE SERVICE HARNESS CONNECTOR TO THE ACTUATOR AND CONNECT THE 2-PIN CONNECTOR TO THE MATING CONNECTOR AT THE AXLE. FOR 1994 TO CURRENT MODELS, IN THE CASE OF A COMPLETE AXLE REPLACEMENT, REFER TO FIGURE 1. 7. ROUTE THE WIRING HARNESS ALONG THE EXISTING HARNESS ON THE RIGHT SIDE OF THE VEHICLE.

How to remove actuator from GM 4WD truck?

1. REMOVE THE FRONT DIFFERENTIAL CARRIER SHIELD, IF EQUIPPED. 2. IF NECESSARY, CLEAN THE AXLE HOUSING IN THE AREA AROUND THE EXISTING ACTUATOR. DISCONNECT THE ACTUATOR’S ELECTRICAL CONNECTION AT THE FRONT AXLE HOUSING. 3. REMOVE THE FRONT AXLE ACTUATOR BY UNTHREADING THE ACTUATOR FROM THE AXLE HOUSING. 4.

When to replace front axle actuator in GMC K?

SUBJECT: SLOW OR NO ENGAGEMENT OF FRONT AXLE WHEN 4WD IS SELECTED (REPLACE FRONT AXLE ACTUATOR) MODELS: 1988-97 CHEVROLET AND GMC K MODELS EXCLUDING 1988-93 MODELS OVER 8500# GVW

What kind of actuator do I need for 4WD?

The thermal actuator came first, when you engage 4WD there is a soft piece of plastic, maybe even wax that has to heat up before the actuator engages. The electric version came out in 98 or so and engages immediately. Myself, if I had that series of truck, I’d install a Posi-Lok and be done with it. Click here for the Posi-Lok. Click to expand…

How does the thermal actuator work on a 4WD truck?

But the Posi-Lok system stays locked even when the ignition is off. The thermal actuator came first, when you engage 4WD there is a soft piece of plastic, maybe even wax that has to heat up before the actuator engages. The electric version came out in 98 or so and engages immediately.