Review on Dorman 600 500 4 Wheel Drive Switch by Todd Cowdrey

Didn't solve my problem, was quite tight but wouldn't be too bad in warm weather. Seems to be as good as the OEM part. I have defrost, vents, and foot warmers running at the same time, and my 4x4 isn't working. Most likely it's a vacuum leak or clogged hoses. Not encoder motor or vacuum switch. The encoder motor makes a noise under the driver's side and all the lights work, but the front axle does not turn on. I hope this comment has helped someone. Update: I had a clogged check valve. Through vacuum tank. Replaced it and now everything works as it should.