2002 Oldsmobile Bravada Logo
Anonymous Posted on Jul 17, 2011

The AC, Headlights, Radio and Door Locks do not work. I have checked both fuse boxes . All fuses seemed ok. What else might I check?

3 Answers

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  • Expert 118 Answers
  • Posted on Jul 18, 2011
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Eqaully important would be a loose ground or something... hard to tell; Buts you will need either a test lamp or Digital Volt Meter for secondary help.

  • Anonymous Jul 18, 2011

    Do you have a test lamp, one can be purchased from most retail stores; A must if you are planning on doing electrical system checks.

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  • Master 1,489 Answers
  • Posted on Jul 17, 2011
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John,
I see that Kelly has responded to your posting. I agree with everything Kelly wrote.
Do you want help troubleshooting this problem ?
Charlie

P.S. I'm not posting this as a solution -- posting a solution is the only way the system is allowing me to comment -- apparently a software bug.

  • 1 more comment 
  • Anonymous Jul 18, 2011

    Some other option that you may want to inspect would be the ground if all the fuses and power supply checks out to be ok, at this point maybe you best option would be to purchase a test lamp from a local parts supply store and start chasing you power supply and ground connection. You can have all the power supply in the world, but you still must end at a grounded location.. Grounds are equally important.

  • Anonymous Jul 18, 2011

    John,

    I explained that I was not posting a solution -- I would ask you not to rate it. I got E-Mail from you asking for help. I looked at your posting and saw Kelly had already responded. There was nothing I could add to that, except to ask if you wanted help doing the troubleshooting -- I got no response.

    Charlie

  • Kelly
    Kelly Jul 18, 2011

    Charlie this is Kelly. I just looked at ratings on the original site.. You got a 4TU. No worries. The beta site for sure does not give us a clue as to how the thread / post was rated.

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  • Master 3,740 Answers
  • Posted on Jul 17, 2011
Kelly
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I suspcet that there is a Fuse link that has failed.
The fuse link I am referring to will control
1. Fog Lamps (If equipped)
2. Engine Compartment Lamp
3. Power Door Locks
4. Radio / Clock
5. Head Lamp Delay

If all of the above are not working then the Fuse Link "N" has failed. I can not tell you were it is located... I just know it is inside the electrical harness and it will take awile to locate it without the workshop manual. It is hard to even tell when some of these fail so we end up probing wires before and after the fuse link.

Here is something to keep in mind. Fuse links do not just fail out of the blue. The DOOR LOCK circuit alone is a 30 Amp circuit and it takes a MAJOR short some where to cause a fuse link to fail. DO NOT under any circumstances bypass or hard wire around the fuse link. You will probably burn the wiring in your car as it will heat up and start melting if there is a 50 amp short or greater. The key here is to find the short before replacing the fuse link.
I would locate the fuse link... then read the wire going to the fuse box for shorts and start pulling fuses one at a time until the short goes away. Then trouble shoot that circuit. Just make sure all lights are off when troubleshooting. This is NOT an easy fix... it will be time consuming.

Thanks for choosing FixYa,
Kelly

  • Anonymous Jul 19, 2011

    Thanks for your message Kelly. I was feeling kinda hung out there. When I was trying to comment back to John, I kept getting in a loop being prompted to register with FIXYA before I could submit a comment.

    Charlie

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