1999 GMC Suburban transfercase

Tiny
ROCKSTARRUFFNCK
  • MEMBER
  • 1999 GMC SUBURBAN
  • 5.9L
  • V8
  • 4WD
  • AUTOMATIC
  • 140,000 MILES
Got stuck in 4 low. The panel fuse kept blowing so I drove it to the house and didn't go over 40mph. I started hearing a whining sound coming from the transfer case. I put it in neutral tocoast down hill. All the sudden it acted like it was catching and gonna lock up but something gave and it wouldn't do anything no matter what gear it was in. Now when I have it running I can hear the sprocket turning. Only when its in gear. I try to push the buttons on the dash to shift outta 4 but the control lights go off and it don't come back on. When I wiggle the fuse for the transfer case the lights come back on then go off. It still sounds like the sprocket turns when I put it in gear.
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Saturday, December 28th, 2013 AT 10:15 AM

2 Replies

Tiny
HMAC300
  • EXPERT
If you can't go anywhere and you hear the sprocket turning you probably broke the chain in side of it. Regardless you'll need to take it apart and may find other damage in there why you could shift to 2 hi or 4 hi
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Saturday, December 28th, 2013 AT 10:30 AM
Tiny
MAXIMILIAM
  • ADMIN
Why does the 4wd controls just flash and go off when I try to shift outta 4 into 2. I would think I could still shift it outta 4wd even though the chain came off the cog.

Rockstarruffnck
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Saturday, December 28th, 2013 AT 12:16 PM

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