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I need the fuse diagram for my 1990 GMC Sierra truck. Don't have the panel, and need to know what fuse voltages goes where. Thank you

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  • Cars & Trucks Master
  • 17,970 Answers

If I remember correctly if you look at the back side of the fuse cover, it should tell you what the fuses are. Also in the owners manual in the index, under fuses, it should give you a diagram of the fuse location for the acc. outlets.

Hope helps.

Posted on Jul 28, 2013

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Posted on Jan 02, 2017

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SOURCE: Fuse panel diagram for 1990 ford bronco 2

Here's the diagram for the fuse panel under the dash. There is also a fuse panel under the hood next to the air filter.e589aae.jpg

Posted on Jan 29, 2010

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SOURCE: GMC truck exhaust diagram

GUESSED AND IT WORKED!

Posted on Jul 31, 2008

emissionwiz
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SOURCE: stereo wiring diagram

1999 GMC Sierra Truck Radio Wiring Guide
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Brown
Car Stereo Dimmer Wire: Gray
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue
-->

Posted on Apr 15, 2009

chitownbob45
  • 316 Answers

SOURCE: Fuse Panel diagram on 2005 GMC Envoy.

doesnt it say on the inside of the cover?

Posted on Oct 17, 2009

  • 432 Answers

SOURCE: 1990 GMC Sierra 1500 pickup. Windshield wipers, Cruise Control

May want to look at replacing the wiper circuit board.It is located on the firewall adjacent to the wiper motor and has a some what square black cover with 3 torx screws and wireing harness pluged into the side.We had a truck that every time you washed it the wipers would stay on until it dryed out.You can try removing it and spaying it down with contact cleaner just watch the brease on the two contact tips.Well hope this helps.

Posted on Feb 05, 2010

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