Dash Brake Light On - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ToonMan · 03-01-2005, 12:40 AM

My 78's Dashboard Brake light came on about 2 weeks ago. I didn't even know it worked!!!!!! Any Idea why it has come on now and won't go off???
I looked for a switch on the E Brake handle and components under the dash, and saw nothing. And my brakes don't have sensor wiring run to them, so I am at a loss.
Any Ideas would be appreciated.
THANKS!!!!!!!!!!

Rob

**Phuloi68** · 03-01-2005, 09:01 AM

You sure there is not a wire to your proportioning valve? When brake light goes on, it normally lets you know there is some kind of issue with either front or rear brakes. Ckeck brake line for rust-leaks. Especially line going back to rear brakes along frame where they usually rust out.

beaterC10 · 03-01-2005, 09:16 AM

The switch for the e-brake is not real visible. You might try pushing the e-brake lever all the way up by hand and see if that solves the problem. I have had the same issue and most times it was the e-brake.

TrainD5115 · 03-01-2005, 10:36 AM

Well, have you checked the fluid level? You didn't mention it in your post so I thought I would ask. Thats what it was on my vehicle.

alpha_male0203 · 03-01-2005, 10:43 AM

The springs in the break could be locked up. I know that does happen if its not use for a long time then it gets all lock up.
I am not a machanic so i dont know just what i know can happen.

Also the level of the fluid can do that to i knwo that. If it gets like bright to dim. i think. but maybe check the level

RockHQ · 03-01-2005, 12:50 PM

Hands down the most common reason for the lit brake warning marker in this era of GM vehicles is leaking rear wheel cylinder(s). The second is a leak in the rear brake lines. And the third is seized up automatic adjusters which leave the brake shoes too far from the drums.

03-01-2005, 12:40 AM	#1
ToonMan Registered User Join Date: Nov 2002 Location: Oregon Posts: 575	Dash Brake Light On My 78's Dashboard Brake light came on about 2 weeks ago. I didn't even know it worked!!!!!! Any Idea why it has come on now and won't go off??? I looked for a switch on the E Brake handle and components under the dash, and saw nothing. And my brakes don't have sensor wiring run to them, so I am at a loss. Any Ideas would be appreciated. THANKS!!!!!!!!!! Rob __________________ Rob the ToonMan 56 Chevy Cameo----Custom, [Turquoise] 67 Chevy C10 Short Fleetside (Black & White) 63 Trailorboat-------Teardrop Style Trailer 69 Honda CM90

03-01-2005, 09:01 AM	#2
Phuloi68 Senior Member Join Date: Dec 2003 Location: Valparaiso, In Posts: 1,114	You sure there is not a wire to your proportioning valve? When brake light goes on, it normally lets you know there is some kind of issue with either front or rear brakes. Ckeck brake line for rust-leaks. Especially line going back to rear brakes along frame where they usually rust out. __________________ Phuloi68 Indy survivor Norwood survivor Big Sandy survivor for those who fight for it... F R E E D O M has a price the protected will never know.

03-01-2005, 10:36 AM	#4
TrainD5115 North Coast, baby! Join Date: Jun 2004 Location: Toledo, OH Posts: 437	Well, have you checked the fluid level? You didn't mention it in your post so I thought I would ask. Thats what it was on my vehicle. __________________ Brad 79 Scottsdale C20 350/350 3.73's Still running full CA smog gear!

03-01-2005, 10:43 AM	#5
alpha_male0203 95 extended cab sportside Join Date: Jul 2004 Location: Clinton, Iowa western. Posts: 895	The springs in the break could be locked up. I know that does happen if its not use for a long time then it gets all lock up. I am not a machanic so i dont know just what i know can happen. Also the level of the fluid can do that to i knwo that. If it gets like bright to dim. i think. but maybe check the level __________________ 95 Chevy k 1500 00 Chevy Silverado 1500 07 cobalt Old ladies car]

03-01-2005, 12:50 PM	#6
RockHQ ROCKET POWER! Join Date: Feb 2003 Location: Finland, Europe Posts: 509	Hands down the most common reason for the lit brake warning marker in this era of GM vehicles is leaking rear wheel cylinder(s). The second is a leak in the rear brake lines. And the third is seized up automatic adjusters which leave the brake shoes too far from the drums. __________________ What did i do last nite? I had a wonderful time, That's what they tell me What did i do last nite? 1979 C-10 shortfleet: Olds 350, Th400, 12 bolt Current project: 1969 Olds 455 W-30, needing a rebuild

03-01-2005, 09:16 AM	#3
beaterC10 Senior Member Join Date: Jul 2003 Location: Indianapolis, IN Posts: 1,277	The switch for the e-brake is not real visible. You might try pushing the e-brake lever all the way up by hand and see if that solves the problem. I have had the same issue and most times it was the e-brake.



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