What does a four-wheel drive actuator do?
A 4×4 actuator is an electronic device used to engage the front differential on a so-equipped, four-wheel drive vehicle. Not all types of four-wheel drive vehicles use this type of switch.
How to replace front axle actuator GMC Sierra?
1A Auto shows you how to replace the 4×4 front axle shift actuator on a 2002 GMC Sierra. This part is the same for many GM 4WD trucks. The procedure is the same for the GMC Sierra and Chevrolet Silverado, years 99, 00, 01, 02, 03, 04, 05, and 06.
How does a four wheel drive actuator work?
These actuators are either vacuum operated or electronic, and take the place of manual locking hubs. When you engage your four-wheel drive, the transfer case shifts to also drive the front wheels. The four-wheel drive actuator then locks the differential to supply power to both front wheels.
Where is the 4WD control module located on a Chevy Silverado?
The 4WD control module is located deep within your dashboard, and is very difficult as well as expensive to replace. On occasion, they start to go bad, generally causing 4WD to not engage and without any codes being thrown. But if you are getting a code, the problem is still likely not your module.
1A Auto shows you how to replace the 4×4 front axle shift actuator on a 2002 GMC Sierra. This part is the same for many GM 4WD trucks. The procedure is the same for the GMC Sierra and Chevrolet Silverado, years 99, 00, 01, 02, 03, 04, 05, and 06.
These actuators are either vacuum operated or electronic, and take the place of manual locking hubs. When you engage your four-wheel drive, the transfer case shifts to also drive the front wheels. The four-wheel drive actuator then locks the differential to supply power to both front wheels.
Why is my front axle actuator not working?
The encoder motor keeps track of the proper position using the encoder feedback. The encoder is just a variable resistor. It can get worn and give bad readings to the TCCM. Here is a nice write-up on replacing the encoder (sensor wheel) inside the encoder motor. Front Axle Actuator: This part engages the front axle.
The 4WD control module is located deep within your dashboard, and is very difficult as well as expensive to replace. On occasion, they start to go bad, generally causing 4WD to not engage and without any codes being thrown. But if you are getting a code, the problem is still likely not your module.