"BRAKE!" light stays on!! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-21-2006, 02:41 AM   #1
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Default "BRAKE!" light stays on!!

93 ssei...

Once in a while, the brake light on the dash comes on, even when the parking brake isn't touched. usually i fix it by applying the brake, then releasing it. sometimes i even have to reach down and pull it up a little while pulling the brake release

well, today it goes on when i hit the gas hard. and no matter what i do/did, i cant get it to go off. so its dinging non stop, for the 45 minute drive home.

anyone know if there'* a wire i can cut, or ground, to make the car think the parking brake is always disabled? its not like i need it, its pretty obvious when the parking brake is on...
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Old 04-21-2006, 02:46 AM   #2
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Just a question, but are you sure that you're not just low on brake fluid? That'* always ended up being the solution to a constant brake light. If it ends up that you're full of brake fluid and it'* definetly the e-brake pedal causing the light, there'* a single spade connector you can disconnect to prevent the brake light to ever come on when the e-brake is set.
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Old 04-21-2006, 03:11 AM   #3
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If it isn't the brake fluid level, sometimes the e-brake pedal will either get bumped or work itself down so that it'll trip the sensor, but not actually apply the e-brake. Just reach down and pull it up. Has happened to me a few times.
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Old 04-21-2006, 03:45 AM   #4
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The brake switch/sensor is probably confused. Is the ABS part of it lit or just the brake...if it is just the brake probably sensor on the e-brake as mentioned.
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Old 04-21-2006, 08:31 AM   #5
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There should be an adjustment on the e brake switch. If the issue is not fluid, then we need to get the adjustment procedure for you. Should be a snap to fix w/o disconnecting or circumventing.
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Old 04-21-2006, 12:13 PM   #6
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thanks for the responses guys. i feel like kind of a idiot, i never checked the brake fluid. i thought there was a seperate light for brake fluid, my other cars had a seperate one (if i recall right). and everyother time this has happened, i would just pull up on the parking brake pedal and it would go away. i did find that single spade connector down by the pedal last night, and when i pulled it it still stayed on, so it must be brake fluid! lol. ill go check it now, then go to the parts store, ill let you know!

thanks again
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Old 04-21-2006, 12:38 PM   #7
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If that doesn't cure the problem, look at the point where the Master Cylinder and the Brake Booster meet... If its wet at all you'll know the whole story..

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Old 04-22-2006, 02:58 AM   #8
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My wife'* 2001 Grand Prix GT (NA 3800) had this *exact* same problem: Brake light came on when you'd accelerate, go off when you'd apply the brake. Turns out it was low on fluid. Because it had a rusted, leaking brake line. Which had a recall notice (but only if you actually have it fail). So my dealership fixed it for free.

So don't screw around with this one, get it inspected and fixed.
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Old 04-22-2006, 04:37 PM   #9
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With the two bonnevilles i've owned, i have put a total of 5 master cylinders in them. All of them failed in the same way; brake fluid leaking out of the rear seal (where it bolts to the brake booster).
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Old 04-23-2006, 12:11 PM   #10
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Quote:
Originally Posted by CSFiend
With the two bonnevilles i've owned, i have put a total of 5 master cylinders in them. All of them failed in the same way; brake fluid leaking out of the rear seal (where it bolts to the brake booster).
Yes Master Cylinders on the 92-99 C and H bodies are a very common failure point in the brake system as well as the Rear wheel cylinders...


Mikey,
Any word on what was wrong with the car?

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