Question about 1999 GMC Yukon Denali

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Dont know how to get to the brake light switch on 99 yukon denali

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Hi to locate the brake light switch you need to have a very close look at the brake pedal (now this is where you need to be a contortionist) if you follow the brake pedal right to the top just before it goes through the bulk head, now at the very top of the pedal if you have a close look you will see the brake light switch its actually located at the very back and very top of the brake pedal.

its a bit hard to get to but if you slide the drivers seat right back and you sort of break your neck twisting round to have a close look at the brake pedal you should just about see the brake light switch its at the very back of the pedal and will have a couple of wires going to it.

now if you have got big hands your in trouble as its very hard to get to so you may struggle.

let me know if you have any problems ok

plz rate this solution as i have a whole page of unrated posts, thanks

Posted on Aug 29, 2010

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  • d1andonlyrip Aug 29, 2010

    my son is trying to help me and is complaining his hands are too big. thought maybe there was some other way to get to it.

  • paul proctor Aug 29, 2010

    Hi no its the only way you can get to it you could remove the pedals but its just as hard to get them off and to put them back, i know is a tight space but its the only way you can get the switch replaced,

  • d1andonlyrip Aug 30, 2010

    so had to take car in and have brake switch replaced. Now car wont come out of park. WOW! now they say its my transmission so i have to go to a transmission shop. HELP

  • paul proctor Aug 30, 2010

    hi, what a nightmare, i take it you drove the car to them with no problems, getting the switch replaced wont of affected the transmission, you must be unlucky as it seems strange this would happen strait after getting the switched replaced.

    are the brake lights now working, you need to put your foot on the brake pedal so you can take it out of park dont you, im trying to think is their anything they could have knocked or bust that would have caused this problem.

    i dont think its a tranny problem i would say its either a sensor or loose wire, ill ask a few people what they think then ill get back to you, but off the top of my head i cant think why the switch would affect the tranny like that

    i would check the brake light switch is working before you pay for tranny work as the brake light switch needs to be working to change out of park and as you drove it their it must have been working to let you to drive the car so the tranny side of the switch must have been working,

    let me have an ask around, im as confused as you, its either a seperate problem that has just happened due to no fault of anybody or it could be something that has got knocked or not put back correctly, ill let you know if i find anything out ok



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