service 4x4

  1. Pressureangle

    400th 'front axle not engaging' problem

    '04 Yukon XL 2500. Transfer case shifts range and engages driveshaft. Front axle actuator not extending, new actuator not extending. 'Service 4x4' illuminated on dash info. No DTCs present. Dash control buttons self-test good, all illuminate; 4x4 hi engages driveshaft, 4x4 low shifts range and...
  2. S

    Need Help 4x4 not working. 2007.5 Yukon SLT No service 4x4 light.

    I have replaced the switch, and I have replaced the front axle actuator. But neither of those have fixed it. I'm suspecting it was neither of those from the get go but wanted to check and make sure anyway I can always return those items anyway but I wanted to know what you guys think it could...
  3. G

    2002 Tahoe Z71 4x4 issues

    I have an 02 Tahoe Z71. The ‘Service 4x4’ light came on the dash board, had it scanned at a service shop & after a quick google search discovered it was ‘Most Likely’ the Transfer case motor. Replaced it with no luck. Next part on the list was the switch on the dash board, replaced it with still...
  4. Ermerins

    1999 Tahoe 4X4 issue

    I have a 1999 tahoe with a strange (to me) 4x4 issue. With the truck stationary in neutral and the brake pressed, the 4x4 system will shift perfectly from 2hi, 4hi, 4lo and 4auto and back. When I drive for a bit in any setting other than 2hi the service 4x4 light comes on and will not let me...

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