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99 silverado 2500 4wd trouble

Discussion in 'Chevy Trucks' started by needmoresnow, Dec 30, 2012.

  1. needmoresnow

    needmoresnow Member
    Messages: 80

    my 4wd went out when I was plowing and the code said it was the transfer case shift motor, however I removed the motor and shifted it in to 4 hi manually and on the lift all 4 wheels spun however when I went to finish plowing I was not in 4wd . is this because the motor holds it in place or do I have bigger problems? thanks
  2. chevboy167

    chevboy167 Member
    Messages: 96

    I dont know if the t-case motor holds in or not but the encoder on the motor may not be telling to engage the front axle accuator. Encoders and shift motors are common problems from what i read. Check the front axle accuator for proper operation also. My problem on my 99 1500 was burned out clutch pack in the transfercase. T-case slipping not turning front driveshaft when under a load. Check your t-case fluid also. Mine was black & smellled like burnt clutch or really hot brake pads. I had to replace transfercase.
  3. needmoresnow

    needmoresnow Member
    Messages: 80

    Ok thanks for the info!
  4. needmoresnow

    needmoresnow Member
    Messages: 80

    Ok thanks for the info