86 K20 No electric power

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Jay Marien

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Jul 31, 2020
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Location
Connecticut
First Name
Jay
Truck Year
86
Truck Model
K20 Silverado
Engine Size
350
Hello all,
New to the site and I just picked up an 86 k20 from a guy who was gonna scrap it. He said it ran fine and one day just died while driving. I’m not a mechanic I’m a parts changer so I can turn a wrench but I don’t have ton of knowledge. I checked the fuses and the ground to the alternator. All good The headlights work but nothing else. When you turn the key on No radio. No turn signals Nothing. He did say the wiper stopped working shortly before it died. Anyone got any ideas.
 

Bextreme04

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Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
probably a burned out fusible link near the starter. The main battery power goes to the starter and then has two fusible links that come off the starter and run to the fuse blocks. I would get a multimeter and start testing for continuity until I found the blown link. Then check to see if you have a short to ground before you try and replace it.
 

Jay Marien

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Joined
Jul 31, 2020
Posts
3
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Location
Connecticut
First Name
Jay
Truck Year
86
Truck Model
K20 Silverado
Engine Size
350
Thank you I needed a start in the right direction.
 

mtnmankev

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Location
Ash Fork, Arizona
First Name
Kevin
Truck Year
1984, 1983
Truck Model
K10, C20
Engine Size
383 Stroker, 350
I have heard mention of engine compartment heat doing a number on the fuse block connector that runs through the firewall.
That's something I need to check out on my 83 with power loss issues.
Best of luck figuring it out, and welcome to the forum !!
 

Jay Marien

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Joined
Jul 31, 2020
Posts
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Location
Connecticut
First Name
Jay
Truck Year
86
Truck Model
K20 Silverado
Engine Size
350
It was fusible link coming off fuse block at firewall. Thank you for the help. Much appreciated
 

mtnmankev

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Location
Ash Fork, Arizona
First Name
Kevin
Truck Year
1984, 1983
Truck Model
K10, C20
Engine Size
383 Stroker, 350
Glad to hear you got it !!!!!!!!!
This forum is filled with many people with tons of know-how and experience.
Between all of them, there's plenty of resources to draw upon for help.
 

mtnmankev

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Joined
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Location
Ash Fork, Arizona
First Name
Kevin
Truck Year
1984, 1983
Truck Model
K10, C20
Engine Size
383 Stroker, 350
I checked my 83 C20 fusible links, and I have power all the way to the firewall connector, but most circuits on the other side are dead, I am going to pin the blame on the fuseblock under the dash ...........
 

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