switched on 4wd but front wheels did not spin?

1999 CHEVROLET TAHOE
200,000 MILES • 5.7L • 4WD • AUTOMATIC
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ERIC VULGATE
  • MEMBER
  • 1 POST
got stuck in mud. switched on 4wd but front wheels didn't spin. i remember traction control doing that on an Impala but i see no button for it. Suburban in that situation switched on right away, but not the Tahoe. lights lit telling me 4wd was on. Neither high nor low would spin the front tires. Is there traction control on the truck? some forums say 4wd will not engage after you're stuck is this true? or is it broken? it clunks when you turn it on as though it is engaged.
Jul 29, 2022 at 12:16 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,273 POSTS
It sounds like the transfer case actuator motor is weak which is common. I would remove the motor and then work the control to see if it moves completely. (Key on). Here is the location and how to replace it in the diagrams below. Check out the diagrams (below). Please let us know what happens.

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Jul 30, 2022 at 4:31 AM
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