Blowing 4X4 fuse with encoder and actuator unplugged

Tiny
SCHMIKYL
  • MEMBER
  • 2006 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 191,000 MILES
My 4x4 worked when I got the truck a month ago, but here recently just got a "Service 4x4" code show up. I replaced the actuator and then noticed that the 4x4 fuse in the vehicle was blown. As soon as I replaced it, it just kept blowing once I turned the ignition on. Any clues or ideas?
Do you
have the same problem?
Yes
No
Wednesday, November 4th, 2020 AT 2:52 PM

7 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good evening,

I attached the wiring diagram for you to view.

Can you tell me which fuse fails so I can trace that wiring for you?

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Roy

Was this
answer
helpful?
Yes
No
Wednesday, November 4th, 2020 AT 3:24 PM
Tiny
SCHMIKYL
  • MEMBER
The 4x4 fuse in the cab. Marked 4x4.

https://fuse-box.info/wp-content/uploads/2018/09/Chevrolet-Silverado-mk1-1999-2007_in1_99-02.jpg
Was this
answer
helpful?
Yes
No
Wednesday, November 4th, 2020 AT 4:49 PM
Tiny
ASEMASTER6371
  • EXPERT
Okay, I attached what the fuse controls.

If you disconnected the switch and actuator and the fuse still fails, the wiring is shorted between the fuse block and the 3 components.

Roy
Was this
answer
helpful?
Yes
No
Wednesday, November 4th, 2020 AT 5:09 PM
Tiny
SCHMIKYL
  • MEMBER
I unplugged the 4x4 selector and unplugeed the plug under the hood for the actuator and it still blew the fuse.
Was this
answer
helpful?
Yes
No
Thursday, November 5th, 2020 AT 11:06 AM
Tiny
ASEMASTER6371
  • EXPERT
Okay, as I stated if the fuse still fails it is a wiring issue. The wiring is shorted somewhere after the fuse.

Roy
Was this
answer
helpful?
Yes
No
Thursday, November 5th, 2020 AT 11:14 AM
Tiny
SCHMIKYL
  • MEMBER
Are you thinking between the interior fuse panel and the plug of the actuator under the hood?
Was this
answer
helpful?
Yes
No
Thursday, November 5th, 2020 AT 11:17 AM
Tiny
ASEMASTER6371
  • EXPERT
Yes, I am. It could be there or to the switch.

Tracing the harness is the next step.

Roy
Was this
answer
helpful?
Yes
No
Thursday, November 5th, 2020 AT 4:23 PM

Please login or register to post a reply.

Sponsored links