4×4 not working

2000 CHEVROLET TAHOE
150,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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BRENT RAMIREZ
  • MEMBER
  • 1 POST
My 4×4 is not kicking in. when I push the 4hi the light will flash for a second then go back to 2hi, but when I push the 4lo the light will flash then go to 4hi and stay there, but the 4hi is not kicking in still. when I push the auto 4×4 the light will flash and then stay on but the 4×4 still won't engage.
Jul 17, 2019 at 10:26 PM
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STRAILER
  • ✓Experienced Mechanic
  • 55,616 POSTS
Hello,

This is common when the actuator motor goes out. here are the instructions and diagrams below to help you do the repair. Check out the diagrams (below). Please let us know what you find.

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Jul 19, 2019 at 10:40 AM
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