brake light - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1983shorty · 06-26-2007, 04:28 PM

the brake light is on on my 83 . every once in awhile the pedal goes down a little farther than normal and the brake light comes on . stays on until the next time the pedal goes down farther than normal , then it goes out. new pads and rotors . brakes work " good " . never have worked "great" since i had the truck. i suspect the master cyl may have an internal seal going bad ? what do you guys think ?

Bus Ted Knuckle · 06-26-2007, 06:01 PM

If your not loosing fluid, it is probably the MC.

1983shorty · 06-26-2007, 07:14 PM

nope , not losing a drop of fluid. i am pretty sure its the MC i guess i just want a little validation before i spends the $$$

gchemist · 06-26-2007, 07:40 PM

I have the same problem with my 83. Happens only then I hit the brakes really hard. Truck stops on a dime!!

Yankeelights · 06-26-2007, 10:46 PM

Yup, sounds like an internal seal in the master.

bigblock79 · 06-26-2007, 11:28 PM

MC it sounds like to me

xtreme80 · 06-27-2007, 02:12 AM

Definately a master cylinder. Mine did the same thing. Only problem is my brake light never went out.

Front to back, my entire brake system is brand new. Still the light on the dash wouldn't go out.

I took out the bulb

**Captkaos** · 06-27-2007, 05:04 PM

Quote:

Originally Posted by xtreme80

Front to back, my entire brake system is brand new. Still the light on the dash wouldn't go out.

I took out the bulb

You can adjust the tab that holds the plunger to make it not stay on. Just screw it up onto the bracket.

xtreme80 · 06-27-2007, 07:52 PM

Quote:

Originally Posted by Captkaos

You can adjust the tab that holds the plunger to make it not stay on. Just screw it up onto the bracket.

Sweet! Didn't know that! I'll give it a try tonight and let you know.

06-26-2007, 04:28 PM	#1
1983shorty Registered User Join Date: Nov 2005 Location: sterling heights , michigan Posts: 208	brake light the brake light is on on my 83 . every once in awhile the pedal goes down a little farther than normal and the brake light comes on . stays on until the next time the pedal goes down farther than normal , then it goes out. new pads and rotors . brakes work " good " . never have worked "great" since i had the truck. i suspect the master cyl may have an internal seal going bad ? what do you guys think ?

06-26-2007, 06:01 PM	#2
Bus Ted Knuckle Son of a gun Join Date: Jan 2007 Location: Hot Springs, Arkansas Posts: 1,636	Re: brake light If your not loosing fluid, it is probably the MC. __________________ Bill BEATERS ARE NEATER

06-26-2007, 07:14 PM	#3
1983shorty Registered User Join Date: Nov 2005 Location: sterling heights , michigan Posts: 208	Re: brake light nope , not losing a drop of fluid. i am pretty sure its the MC i guess i just want a little validation before i spends the $$$

06-26-2007, 07:40 PM	#4
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: brake light I have the same problem with my 83. Happens only then I hit the brakes really hard. Truck stops on a dime!! __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

06-26-2007, 10:46 PM	#5
Yankeelights Registered User Join Date: Jun 2007 Location: NW Pennsylvania Posts: 92	Re: brake light Yup, sounds like an internal seal in the master.

06-26-2007, 11:28 PM	#6
bigblock79 67 Chevy Stepside Join Date: Mar 2007 Location: Jonesville NC Posts: 836	Re: brake light MC it sounds like to me __________________ 1967 Chevy stepside 1976 BIG DOOLEY 454 turbo 400 4:11

06-27-2007, 02:12 AM	#7
xtreme80 Wishin' I had more money! Join Date: Feb 2007 Location: Eugene, OR Posts: 1,242	Re: brake light Definately a master cylinder. Mine did the same thing. Only problem is my brake light never went out. Front to back, my entire brake system is brand new. Still the light on the dash wouldn't go out. I took out the bulb



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