brake light problems

gjd99tahoe · 05-24-2007, 08:57 PM

I have a gmc ext. cab 1/2 ton and the brake lights go out when the pedal is pushed but the signal light and regular lights still work .

mrjohnwayne · 05-25-2007, 07:54 AM

might be a bad switch. Have you checked the bulbs?

03chevy · 05-25-2007, 12:43 PM

i sec that mrjohnwayne

75K30 · 05-25-2007, 01:25 PM

Read that again.
The brake light goes out when the pedal is pushed, and the other lights remain the same. If I recall the 99 truck has independant bulbs for the turn signals, and of course the running light is a seperate element, so that is working fine. If the brake lights are working the opposite way, the switch is wired backwards, it is wired normally closed instead of normally open.

mudseeker · 05-25-2007, 01:53 PM

i dunno, to me it sounds like the taillights are on and when he hits the brake pedal, then the tail lights go out and the brake lights don't come on. kinda confusing.

gjd99tahoe · 05-25-2007, 07:41 PM

Thanks for the info guys. I checked the bulbs and they are ok. Sorry for the confusion but what I meant is that when I push the pedal down the lights come on then they go off even though the pedal is still pushed. And this happens everytime I push the brakes.

mudseeker · 05-26-2007, 04:35 PM

probably the switch then.

05-24-2007, 08:57 PM	#1 (permalink)
gjd99tahoe Junior Member Join Date: May 2007 Posts: 2	brake light problems I have a gmc ext. cab 1/2 ton and the brake lights go out when the pedal is pushed but the signal light and regular lights still work .

05-25-2007, 07:54 AM	#2 (permalink)
mrjohnwayne Moderator Join Date: Apr 2005 Location: Texas Posts: 2,867	might be a bad switch. Have you checked the bulbs? __________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4

05-25-2007, 12:43 PM	#3 (permalink)
03chevy Senior Member Join Date: Dec 2006 Location: jax,fl Posts: 794	i sec that mrjohnwayne __________________ A dirty mind is a terrible thing to waste!

05-25-2007, 01:53 PM	#5 (permalink)
mudseeker Moderator Join Date: Feb 2006 Location: michigan Posts: 3,079	i dunno, to me it sounds like the taillights are on and when he hits the brake pedal, then the tail lights go out and the brake lights don't come on. kinda confusing. __________________ proud member of the 200k mile club http://s89.photobucket.com/albums/k2...eeker/smilies/ boys never stop playing with toys

05-25-2007, 07:41 PM	#6 (permalink)
gjd99tahoe Junior Member Join Date: May 2007 Posts: 2	brake light problem Thanks for the info guys. I checked the bulbs and they are ok. Sorry for the confusion but what I meant is that when I push the pedal down the lights come on then they go off even though the pedal is still pushed. And this happens everytime I push the brakes.

05-25-2007, 01:25 PM	#4 (permalink)
75K30 Senior Member Join Date: Jul 2006 Posts: 2,256	Read that again. The brake light goes out when the pedal is pushed, and the other lights remain the same. If I recall the 99 truck has independant bulbs for the turn signals, and of course the running light is a seperate element, so that is working fine. If the brake lights are working the opposite way, the switch is wired backwards, it is wired normally closed instead of normally open.

05-26-2007, 04:35 PM	#7 (permalink)
mudseeker Moderator Join Date: Feb 2006 Location: michigan Posts: 3,079	probably the switch then. __________________ proud member of the 200k mile club http://s89.photobucket.com/albums/k2...eeker/smilies/ boys never stop playing with toys

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