brake pedel makes stuff act weird??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ocbaud · 03-14-2004, 05:53 PM

okay, now that my guages are working again, anytime i press on the brake pedal, its like its sucking the power out of it. the parking brake light goes really dim and my voltmeter gets really low.

when i let off the brake, it goes back to normal

Russell · 03-14-2004, 05:59 PM

Sounds like a short on your brake switch... Pull the access panel off thats under the steering column and pull wires until you figure it out.

Destructo · 03-14-2004, 06:00 PM

or just disconnect or replace your brake switch, maybe it has a poor ground?

*1FaastC10* · 03-14-2004, 07:40 PM

its a given that your truck is not running. you may want to just hold off on replacing anything until your engine is in and running. may just be an issue of a low battery. when you've got it running, the alternator may very well solve the problem by supplying more voltage.

ocbaud · 03-14-2004, 07:59 PM

Quote:

Originally posted by 1FaastC10
its a given that your truck is not running. you may want to just hold off on replacing anything until your engine is in and running. may just be an issue of a low battery. when you've got it running, the alternator may very well solve the problem by supplying more voltage.

i've got it hooked up to a charger rightnow, suppling a full 12volts.

it is the brake switch though, everytime i let off of the switch, the power is drained, but it comes back when i push the switch back in

NeCrOmAnCeR · 03-14-2004, 11:41 PM

Check the brake lamps as well. A short in the sockets could cause a drain also. I agree with 1fastC10, hold off on it till you get the truck running. I don't know what size charger you are using but a small 10 amp charger will drop substantial voltage with a current draw such as the brake lights. Try turning on the headlights and see if the same thing happens.

ocbaud · 03-14-2004, 11:42 PM

headlights work fine. it only happens with the brake switch

NeCrOmAnCeR · 03-15-2004, 12:16 AM

Also check the cab grounds (for dash electrics), make sure the mounting points are nice and clean.

ocbaud · 03-15-2004, 02:24 AM

okay, it does drain it with the headlights... and anything else electrical. it drains the power when the brake lights, headlights, dashlights, blower motor, etc. comes on

03-14-2004, 05:53 PM	#1
ocbaud Garage Queen Material Join Date: Oct 2002 Location: USA Posts: 4,129	brake pedel makes stuff act weird??? okay, now that my guages are working again, anytime i press on the brake pedal, its like its sucking the power out of it. the parking brake light goes really dim and my voltmeter gets really low. when i let off the brake, it goes back to normal

03-14-2004, 05:59 PM	#2
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Sounds like a short on your brake switch... Pull the access panel off thats under the steering column and pull wires until you figure it out. __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

03-14-2004, 06:00 PM	#3
Destructo Registered User Join Date: Sep 2003 Location: Lewisville, NC Posts: 1,836	or just disconnect or replace your brake switch, maybe it has a poor ground? __________________ 1985 Scottsdale Shortbed 4x4 Stout 350 with some "upgrades"-700r4-33x12.5" Mud Tires, Warn 8274-50 winch. 2005 Chevrolet Colorado Regular Cab 2wd 4-banger, 5 speed, Street Pack with 3.73 axle.

03-14-2004, 07:40 PM	#4
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,400	its a given that your truck is not running. you may want to just hold off on replacing anything until your engine is in and running. may just be an issue of a low battery. when you've got it running, the alternator may very well solve the problem by supplying more voltage.

03-14-2004, 11:41 PM	#6
NeCrOmAnCeR Registered User Join Date: Feb 2004 Location: Hodgenville, Ky Posts: 735	Check the brake lamps as well. A short in the sockets could cause a drain also. I agree with 1fastC10, hold off on it till you get the truck running. I don't know what size charger you are using but a small 10 amp charger will drop substantial voltage with a current draw such as the brake lights. Try turning on the headlights and see if the same thing happens.

03-14-2004, 11:42 PM	#7
ocbaud Garage Queen Material Join Date: Oct 2002 Location: USA Posts: 4,129	headlights work fine. it only happens with the brake switch

03-15-2004, 12:16 AM	#8
NeCrOmAnCeR Registered User Join Date: Feb 2004 Location: Hodgenville, Ky Posts: 735	Also check the cab grounds (for dash electrics), make sure the mounting points are nice and clean.

03-15-2004, 02:24 AM	#9
ocbaud Garage Queen Material Join Date: Oct 2002 Location: USA Posts: 4,129	okay, it does drain it with the headlights... and anything else electrical. it drains the power when the brake lights, headlights, dashlights, blower motor, etc. comes on



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