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

el curioso · 12-15-2006, 01:58 AM

I recently swapped out the drums to disk in the front end and after changing the complete spindles, proportioning valve, MC and booster, the brake light in the dash stays lit. I have bleed the brakes 3 times, the pads are brand new and the MC is also new. What the heck gives ???

gringoloco · 12-15-2006, 05:37 AM

Oh, in the dash. NM... What 68c10 said.

sixty8c10 · 12-15-2006, 07:01 AM

It sounds to me like you need to reset or hook up the switch in your prop valve

el curioso · 12-15-2006, 06:12 PM

It has the wire connected to it. How do you reset.

braggwood · 12-16-2006, 07:57 AM

I may be wrong, but it sounds as if your master cylinder is off center. To center it, have someone pump the brakes and watch the light, bleed it slowly at the line on the master cylinder, when the light goes out tighten the line. Hope this works for you. Greg

12-15-2006, 01:58 AM	#1
el curioso Registered User Join Date: Dec 2004 Location: El paso, Tx. Posts: 428	Brake light lit I recently swapped out the drums to disk in the front end and after changing the complete spindles, proportioning valve, MC and booster, the brake light in the dash stays lit. I have bleed the brakes 3 times, the pads are brand new and the MC is also new. What the heck gives ??? __________________ 1969 Chevy C-10 350/700r4 Last edited by el curioso; 12-15-2006 at 02:07 AM.

12-15-2006, 05:37 AM	#2
gringoloco A guy with a truck Join Date: Sep 2005 Location: Germany, for now Posts: 5,921	Re: Brake light lit Oh, in the dash. NM... What 68c10 said. __________________ -Chris Instagram _elgringoloco_ '70 Short-Wide How to: Ruin a perfectly good C10 ‘70 Blazer ConversionHow To: Ruin a Perfectly Good 4wd '72 Highlander How To: Ruin a Perfectly Good K/5 (SOLD) '72 Blazer 2WD How to: Ruin a perfectly good Blazer (SOLD) '05 Yukon Daily Driven (not so stock) Yukon (SOLD) ‘07 Yukon Denali (daily) Members met list: SCOTI, darkhorse970, 67cheby, 67cheby'sGirl, klmore, porterbuilt, n2billet, Fastrucken, classicchev, Col Clank, GSFMECH, HuggerCST, Spray-Bomb, BACKYARD88, 5150, fine69, fatbass, smbrouss70, 65StreetCruiser, GAc10boy Last edited by gringoloco; 12-16-2006 at 03:10 AM.

12-15-2006, 07:01 AM	#3
sixty8c10 MY EX DRIVES A BROOM Join Date: Nov 2003 Location: Herington, KS Posts: 869	Re: Brake light lit It sounds to me like you need to reset or hook up the switch in your prop valve __________________ They say nobody's perfect. I'm a nobody, so I must be perfect. Building Nemo -1968 C10 Long Bed FRED -1947 KB-2 International

12-15-2006, 06:12 PM	#4
el curioso Registered User Join Date: Dec 2004 Location: El paso, Tx. Posts: 428	Re: Brake light lit It has the wire connected to it. How do you reset. __________________ 1969 Chevy C-10 350/700r4

12-16-2006, 07:57 AM	#5
braggwood Registered User Join Date: Apr 2006 Location: Grandview WV Posts: 41	Re: Brake light lit I may be wrong, but it sounds as if your master cylinder is off center. To center it, have someone pump the brakes and watch the light, bleed it slowly at the line on the master cylinder, when the light goes out tighten the line. Hope this works for you. Greg



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