20 Most Recent 2004 GMC Sierra Questions & Answers

Here you go. Under hood fuse block
Ign. Fuse E
both fuses are 10 amp
I hope this helps. Take care.

2004 GMC Sierra | Answered on Mar 17, 2020

Some fixya user told me a website reliable-store it is very good.. I used it to repair my shredder it had some spark issue which wasn't easily fixed. you can go there and try

2004 GMC Sierra | Answered on Feb 13, 2019

need to go to dealer to have HVAC module reprogramed. whenever diconnecting battery power on these vehicles you can connect a 9 volt battery between neg and pos to keep the memory in the computers. I am an master ase technician and 5 classes from gm world class tech.

2004 GMC Sierra | Answered on Sep 30, 2018

On this website you find fuse box diagram, description and location for GMC Sierra (2003 - 2004)

GMC Sierra mk1 2003 2004 fuse box diagram Auto Genius

2004 GMC Sierra | Answered on Aug 23, 2018

If you're finding it difficult to service/repair your car, get one of those online manuals. You'll not have to wait for others to answer, or rely on
mechanics and all. Plus I know a website that has very good manuals online, without expiry i.e. for lifetime.


2004 GMC Sierra | Answered on Mar 05, 2018

I'm not sure if I understand you correctly. Does the air conditioning works properly it's just the sound problem and did it happens suddenly?
For the strange sound, it could be normal and not.
I imagine the sound comes from the exchange pressure between the low pressure and high pressure.
To fix or knowing what is wrong you will have to get AC/pressure gauge install on AC/pressure tap under the hood and sync the compressor engaging clutch if it happens at the same time that the sound you are talking about.
Pretty hard to tell online without earing it. But I ever listen to a sound similar to that.

hope it helps

2004 GMC Sierra | Answered on Feb 19, 2018

2004 sierra
Look no further for help, try this website ?reliable-store com

2004 GMC Sierra | Answered on Jan 26, 2018

GM had bad stepper motors inside the instrument cluster,2003 to 2006 . These stepper motors control the gauge needles . Sounds like you have a few different problems . Instrument cluster has nothing to do with the A/C , radio , windows , locks . One possibility mite be that they all share a common ground . Do you know what wiring diagrams are ? How to read an use one ,along with a DVOM - digital volt ohm meter to test automotive electrical circuit's ?
Free wiring diagrams here
http://www.bbbind.com/free_tsb.html .

How to repair GM Instrument Cluster Speedometer Gauge Stepper
Electric Testing Techniques You Need to Know
Looking at wiring diagrams i see these systems share G203 - this is a body ground . Could be that it's loose . Pick one of the systems your having problems with an do voltage drop testing .
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia

2004 GMC Sierra | Answered on Dec 28, 2017

The smoke if it's white and goes away is just condensation in the exhaust system evaporating and the clicking noise could be the famous GM Piston slap. You can take it to the GM Dealer, there is an upgrade ECM program to help eliminate the piston slap noise when the engine is cold. You can also try adding some Lucas engine treatment to your engine oil to help with the piston slap problem. Start with that and hope it's not overdue for an oil change or low oil level in the engine.
Thank you for using Fixya

2004 GMC Sierra | Answered on Nov 08, 2017

If it will run in 2wd or 4H, you should be fine. May be just a solenoid in the transmission.

2004 GMC Sierra | Answered on Apr 12, 2017

You can't..you'll have to replace the sensor..no other cure

2004 GMC Sierra | Answered on Apr 08, 2017

Stich a flat blade screwdriver in it and give it a twist.

2004 GMC Sierra | Answered on Dec 12, 2016

Wild guess here, had a similar problem on my 2000 4x4 blazer, has an electric motor on transfure case to swith it into 2h, 4h, and 4l, would blow the fuse every time when switching, did is to replace the motor. Just confirm your fuse that is blowing feeds that.

2004 GMC Sierra | Answered on Oct 22, 2016

Have you recharged your AC lately? Get a can of R14A at pep boys and fill er up!

2004 GMC Sierra | Answered on Jul 03, 2016

he Internet has a large number of web sites
where you can buy service manuals and schematics
from bookstores, publishers, and other collectors.

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2004 GMC Sierra | Answered on Jan 18, 2016

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