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Fuse panel high speed on my fan switch went out

Tiny
DENNIS DER HOVANISIAN
  • MEMBER
  • 2006 GMC SIERRA
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 70,000 MILES
The high speed on my fan switch went out. The next day I started my truck with the switch on high and it came on high speed only so I need to check some fuses can you help me please?
Tuesday, March 17th, 2015 AT 7:52 AM

21 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Here is a guide to help you step by step with instructions in the diagrams below to show you how on your car.

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

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Tuesday, March 17th, 2015 AT 8:15 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi,

I attached a pic below of the under hood fuse/relay box and highlighted the fuel pump relay. It is on the left side of the vehicle in the fuse/relay box. Is it possible for you to take a pic of what you are seeing so I can better help?

Let me know.
Joe
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Saturday, March 6th, 2021 AT 10:59 AM (Merged)
Tiny
ROBERT FOG
  • MEMBER
  • 1 POST
  • 1995 GMC SIERRA
  • 2WD
  • AUTOMATIC
Location of tail light fuse?
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Under the dash, right side of steering column. I attached a picture of the wiring schematic for the rear lights. Fuse #9 seems to be the one you need.

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

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
GREASEMONKEY46
  • MEMBER
  • 14 POSTS
  • 1993 GMC SIERRA
  • 5.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 10,000 MILES
It's a 30 amp breaker on fire wall passenger side keeps clicking replaced it and still clicking will not start if it burns out. How do I fix it?
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi,

If it is clicking, that indicates there is a short and it is clicking off. What is it powering? I looked a pic of the fuse box and it doesn't show any circuit breakers other than for the power windows. If you look at pics 2 and 3, it shows the entire power distribution schematic. There See the attached pic. Is it possible for you to take a pic of it and upload it for me to see?

Let me know.
Joe
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
GREASEMONKEY46
  • MEMBER
  • 14 POSTS
30 amp circuit breaker by fuel pump relay keeps clicking under hood passenger side.
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi,

This post was in my follow up list. That normally indicates that you would have sent a message or tried to contact me here. However, there is nothing new here. Did you try to attach something that didn't come through?

Joe
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
GREASEMONKEY46
  • MEMBER
  • 14 POSTS
It's in fire wall passenger side beside fuel relay its constant hot and ground.
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
LEVI1985
  • MEMBER
  • 1 POST
  • 1991 GMC SIERRA
Need diagram of the fuse panel for this vehicle please
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,490 POSTS
Hello,

I am happy to help you today. Here is a guide to help you check the fuses so you will now how once you find the one you are looking for.

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

Here are the fuse panel diagrams (Below)

Check out the diagrams (Below)

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Hi,

I need you to take a pic of it and upload it for me to see. The fuel pump relay is in the fuse/relay box under the hood, so I'm not sure what you are referring to.

Let me know.

Joe
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
GREASEMONKEY46
  • MEMBER
  • 14 POSTS
It's not in fire box it's a breaker on fire wall passenger side right beside other relays it burns out. Truck will not fire to start. Could it be part of electric brake for towing?
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
GREASEMONKEY46
  • MEMBER
  • 14 POSTS
That's the breaker on passenger side under hood.
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

Yep, that is an aftermarket part. That's why it wasn't making sense to me. To answer your question, it certainly could be a breaker for the electric brakes. This type is often used for that purpose.

Have you checked to see if there is spark and fuel to the engine? You indicated it won't fire to start. Do you mean there is no ignition spark? Let me know that first. Also, here is a link you may find helpful.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Let me know.
Joe

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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
GREASEMONKEY46
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  • 14 POSTS
Thank you guy's.
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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You are very welcome. Is it now running?

Joe
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
GREASEMONKEY46
  • MEMBER
  • 14 POSTS
No, but it will be soon as customers call. Thank y'all. God bless.
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Same to you. Please feel free to come back in the future if you need anyting.

Joe
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)
Tiny
GREASEMONKEY46
  • MEMBER
  • 14 POSTS
Yes sir.
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Saturday, March 6th, 2021 AT 11:00 AM (Merged)

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