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  1. #1
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    Default Just bought a 98 gtp and can't figure out what's wrong with it

    I bought it a couple months ago and all of my windows and sun roof have stopped working, and my ob2 plug won't hook up to anything either. The radio works but doesn't show anything when I first turn it on I have to drive for about 5 minutes and then it comes up

  2. #2
    Killa Bee Scottydoggs's Avatar
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    obd2 port is the fuse for the power port. if the power port works now you got bigger issues.

    theres two fuse boxes, under the hood and glove box. check the fuses for the windows.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  3. #3
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    I changed the power port fuse a couple times to make sure that wasn't the problem but still nothing.
    I will check my window fuses also, is their a sunroof fuse?

  4. #4
    Killa Bee Scottydoggs's Avatar
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    id think so. theres a fuse map showing you what they power. read it and check the fuses. both fuse boxes. might have two. never know.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  5. #5
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    Alright I will check that tonight and get back to you on that.

  6. #6
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    Kinda sounds ignition switch related with multiple electrical issues that happened all at once.

    SMGPFC Member #1

  7. #7
    Killa Bee Scottydoggs's Avatar
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    if the fuses check out next could be the drives side window switch, it goes bad the windows can quit working. try playing with the child lock switch. might come back to life.

    then the wires from the cab to the door can break, you'd have to pop the accordion tube, the inside kick panel, and the car door inside panel off and look for damaged wires.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    I will make sure all the drivers side is good also.

    What problems all happen with the ignition switch going bad?

  9. #9
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    Oh the ac/heater isn't working either if that matters, it sounds like it is when turned on but no air comes out, in not sure if that connects to this or not.

  10. #10
    Killa Bee Scottydoggs's Avatar
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    heater fan, parking lights not working, odd ball crap.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    And my parking lights don't work either, and my truck sensor is always on.

  12. #12
    Killa Bee Scottydoggs's Avatar
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    https://sparkys-answers.com/2009/09/...-changing.html and here your how to. its not all that bad of a job, new one is about 50 bucks off rockauto.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  13. #13
    GrandPrix Junkie Bronco Boy's Avatar
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    Quote Originally Posted by Mrkt View Post
    What problems all happen with the ignition switch going bad?
    All kinds of things. Most commonly is no HVAC and no auto on lights. You can replace the ignition switch, or do this "ignition saver mod":
    http://www.clubgp.com/newforum/tm.as...mode=1&smode=1



    Here's schematics on the fuse panels; they are for 2002, but should be the same for 98:

    http://chrisb.users.superford.org/Grand_Prix/All_Data/Fuse_Block_Interior_Page_1.pdf
    http://chrisb.users.superford.org/Gr...ood_Page_1.pdf
    Chris B
    2002 GT

  14. #14
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    Thank you very much for your help, definitely helped alot, I didn't think it was all connected

  15. #15
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    I will definitely give that mod a good look to see if I should do that. And thank you for the schematics also.

  16. #16
    GrandPrix Junkie Bronco Boy's Avatar
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    Quote Originally Posted by Mrkt View Post
    I will definitely give that mod a good look to see if I should do that. And thank you for the schematics also.
    No problem. I bought a new ignition switch a few years ago, with the plans of changing it. When I did, I found that all my aftermarket alarm wiring was tapped into the switch wiring, so I changed plans and just did the mod. Been almost 3 years and it is working just fine, so it is a viable option.
    Chris B
    2002 GT

  17. #17
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    That is definitely good to know that it's actually worked for you for so long

  18. #18
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    Seems the guys have you going right on most of the big stuff. Your lack of radio display is a bad bulb. Its in the radio and possible to change. I typically pick up a fresh one on ebay

  19. #19
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    Default Re: Just bought a 98 gtp and can't figure out what's wrong with it

    I'll be replacing the radio with one with a aux outlet on it so im not to worried about the radio.

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