2000 Silverado 4 Wheel Drive Not Working.

[rgp717]

Rats. Did not try to spin the wheel. I"ll do the experiment again and report back.

[rgp717]

OK, Did the experiment. Put the truck in 4HI. The light on the dash board selector blinked in 4HI and then went solid in 4HI. Drove it about 50 feet into my driveway. Put the transmission in Park. Left the motor running. Raised the driver front wheel. Crawled under the trunk. I was unable to turn the front drive shaft by hand. However, I can spin the driver front wheel while its up in the air.

 

So I take that to mean the front transfer case looks ok. My next experiment will be to remove the front actuator, reconnect its electric, and have my wife switch it back and forth between 4HI and 2HI, to see if the actuator moves in and out. So, I"ll report back soon.

 

Comments welcome, especially if I'm doing something wrong.

Edited March 20, 2020 by rgp717

[davester]

That's good.  If you find the actuator moves in/out, then somethings wrong inside the diff, if it doesn't, then the actuator has failed, or there's an electrical problem (from the sensor in the transfer case to the wiring harness, fuse, ground point).

[rgp717]

Sorry, but I lost track of the forum.

 

Long story short, I replaced the front axle actuator and now my 4 wheel drive is working. Thanks to everyone for all the advice. It's so much nicer to have my 4x4 back. By the way, removing the old actuator was a nightmare. I finally gave up and went to a garage, and they had to bust it into pieces before getting it out.