4WD fuse keeps blowing

Tiny
1994CHEVY
  • MEMBER
  • 1994 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 156,000 MILES
When I attempt to engage 4x4 the fuse blows and wont allow it to lock it. What would cause that and how can I fix it?
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Wednesday, February 20th, 2008 AT 5:23 PM

6 Replies

Tiny
MASTERTECHTIM
  • MEMBER
There is a transfer case switch located on the top left of the unit I would start there. Here is the wiring diagrams for the transfer case.

If the front differential actuator shorts out on these trucks. Try unplugging the 2 wire plug that goes to the front diff actuator and see if the fuse still blows, if it does not then you know the actuator is no good.

Check out the diagrams (Below)

Please let us know what you find. We are interested to see what it is.

Cheers
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Wednesday, February 20th, 2008 AT 5:24 PM
Tiny
1994CHEVY
  • MEMBER
The actuator is located on the front axle right?
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Wednesday, February 20th, 2008 AT 5:38 PM
Tiny
MASTERTECHTIM
  • MEMBER
Yes its located on the front axle. It has 2 wires coming out of it. The actuator screws into the front diff, it has a huge 1 1/16 spot for a wrench or you can unscrew it with a big pair of channel locks.
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Wednesday, February 20th, 2008 AT 5:48 PM
Tiny
1994CHEVY
  • MEMBER
It was the switch once I replaced it the fuse stop blowing thanks for your help I love this site.
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Wednesday, February 20th, 2008 AT 6:03 PM
Tiny
MASTERTECHTIM
  • MEMBER
They have since updated the part because of so many problems. The new kit comes with a wiring harness that has to be installed and I think it cost about $150-175 for parts. If you look around you might be able to find the exact one you have that will unscrew and plug right in for about $100
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Wednesday, February 20th, 2008 AT 6:06 PM
Tiny
SRG200159
  • MEMBER
Thanks you that fixed my 1994 chevy silverado!

2Carpros is the best!
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Tuesday, October 30th, 2012 AT 7:35 PM

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