3rd brake light working but no others - The 1947 - Present Chevrolet & GMC Truck Message Board Network

CaptRMW · 02-21-2012, 11:34 AM

2007 1/2 ton Chevy pickup.The third brake light works and neither of the corner brake lights will work. My guess is the brake light switch is working or I would not have a 3rd brake light. All turn signals, 4 way flashers and tail lights are working. Any and all help appreciated...Roger

**Boog** · 02-21-2012, 01:33 PM

It's been my experience that the fuse in the power control center under the hood has a blown fuse. I had the same symptoms with my 97 GMC.

CaptRMW · 02-21-2012, 02:11 PM

Quote:

Originally Posted by Boog

It's been my experience that the fuse in the power control center under the hood has a blown fuse. I had the same symptoms with my 97 GMC.

I visually checked the fuses and they looked good, I may be wrong but would expect the fuse for the third brake light to be the same as for the corners. Thanks, Roger

**truckdude239** · 02-21-2012, 04:56 PM

bad bulbs

**Boog** · 02-21-2012, 08:12 PM

Quote:

Originally Posted by CaptRMW

I visually checked the fuses and they looked good, I may be wrong but would expect the fuse for the third brake light to be the same as for the corners. Thanks, Roger

Actually they are not on the same fuse. There is a fuse in the cab and a fuse in the power control center under the hood. The 2nd one I think is a 30 amp and powers the corner brake lamps. Do check to see if there is power going to the rear lights and inspect the bulbs. It is doubtful that both sides are blown at the same time though.
Make sure the trailer wiring harness at the bumper isn't damaged, maybe a pinched wire or damaged socket.

**truckdude239** · 02-21-2012, 08:25 PM

hey i've seen it before just saying they both are on the same amount of time

CaptRMW · 02-21-2012, 09:33 PM

Visually checked both fuses today but will test them tomorrow as well as checking for power to the fuses. I will report my findings. Thanks, Roger

CaptRMW · 02-22-2012, 07:06 PM

Both bulbs good just not making contact, what a POS system, glad I drive a 1970 with those horrible old 1157 bulbs that are bright as ever after 200,000 miles.

**Boog** · 02-22-2012, 10:04 PM

That'll do it. Thanks for the update.

02-21-2012, 11:34 AM	#1
CaptRMW Custom Sport W/T Join Date: Nov 2010 Location: Tarpon Springs,Fl & Annapolis,Md. ....................Quaint drinking villages with a fishing problem Posts: 898	3rd brake light working but no others 2007 1/2 ton Chevy pickup.The third brake light works and neither of the corner brake lights will work. My guess is the brake light switch is working or I would not have a 3rd brake light. All turn signals, 4 way flashers and tail lights are working. Any and all help appreciated...Roger Last edited by CaptRMW; 02-21-2012 at 12:10 PM.

02-21-2012, 01:33 PM	#2
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,655	Re: 3rd brake light working but no others It's been my experience that the fuse in the power control center under the hood has a blown fuse. I had the same symptoms with my 97 GMC. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

02-21-2012, 04:56 PM	#4
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: 3rd brake light working but no others bad bulbs __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

02-21-2012, 08:25 PM	#6
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,238	Re: 3rd brake light working but no others hey i've seen it before just saying they both are on the same amount of time __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

02-21-2012, 09:33 PM	#7
CaptRMW Custom Sport W/T Join Date: Nov 2010 Location: Tarpon Springs,Fl & Annapolis,Md. ....................Quaint drinking villages with a fishing problem Posts: 898	Re: 3rd brake light working but no others Visually checked both fuses today but will test them tomorrow as well as checking for power to the fuses. I will report my findings. Thanks, Roger

02-22-2012, 07:06 PM	#8
CaptRMW Custom Sport W/T Join Date: Nov 2010 Location: Tarpon Springs,Fl & Annapolis,Md. ....................Quaint drinking villages with a fishing problem Posts: 898	Re: 3rd brake light working but no others Both bulbs good just not making contact, what a POS system, glad I drive a 1970 with those horrible old 1157 bulbs that are bright as ever after 200,000 miles.

02-22-2012, 10:04 PM	#9
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,655	Re: 3rd brake light working but no others That'll do it. Thanks for the update. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross



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