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4lo works but 4hi doesn't
Also, just for clarity, I believe you are referring to the tcase motor and not the front differential actuator, correct?- Chuchy
- Post #6
- Forum: Engine & Drivetrain
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4lo works but 4hi doesn't
Doesn't the actuator control both hi and lo. I thought I could rule that out since I had 4lo. I thought it would be more like the part sending the signal... like the TCCM?- Chuchy
- Post #5
- Forum: Engine & Drivetrain
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4lo works but 4hi doesn't
I was really hoping there may be some ideas on this so that I could dig in on it this weekend. Thanks.- Chuchy
- Post #2
- Forum: Engine & Drivetrain
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4lo works but 4hi doesn't
New to the forum. Thanks in advance for the help. I have a 2007 Yukon. When I try to shift into 4hi, the light blinks and I get a service 4wd error. I can, however, shift into 4lo. I have tried shifting into 4hi at various speeds multiple times. Any ideas of where to start? TCCM? Thanks!- Chuchy
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- Replies: 8
- Forum: Engine & Drivetrain
