musubk Posted August 23, 2015 Share Posted August 23, 2015 Here is a problem I've been having after spending some time in 4WD Lo, climbing a hill for a while. There is a whining noise from the transmission or transfer case, and it progressively gets louder. Eventually the front left wheel will stop turning due to the caliper sticking, and when I check it, it's REALLY hot. After cooling down for a while it unseizes and can drive again. In 4WD Hi the whining noise is much quieter and I haven't had it get to the point where the wheel seizes. In 2WD there is no whining noise at all.Today I had the wheel seize twice in a mile while climbing a steep trail, and I eventually just pulled the caliper off the rotor so I could drive the ~3 miles back to the trailhead with no brakes. I then reinstalled the caliper and it was fine for the ~30 mile drive home (in 2WD, with no steep hill climbing.) Any ideas what the problem could be? Link to comment Share on other sites More sharing options...
TomRhere Posted August 23, 2015 Share Posted August 23, 2015 The Hill-Holder (H-H) isn't releasing the brakes fully. It's plumbed into the Left Front/Right Rear brake lines. Link to comment Share on other sites More sharing options...
musubk Posted August 23, 2015 Author Share Posted August 23, 2015 Ahh, that sounds like it could be the issue. Reading about the hill holder, it seems it's sensitive to the angle of the car? I recently installed a lift, front end only. Link to comment Share on other sites More sharing options...
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