Vanning.com logo
Boxdin
Site Navigation


Advertisements
Recent Posts
Slippery tires
by Scrojira. February 26th 2020 9:58 pm
New to here but not new to vans
by captainchrysler. February 26th 2020 9:53 pm
Another Dajiban build.
by Eunospeed. February 26th 2020 7:05 pm
1998 ram van 1500 swb hightop 17241 Newville PA
by Dw89xj. February 26th 2020 7:03 pm
Looking for my 77 chopped van
by Astrocreep66. February 26th 2020 6:29 pm
Van Life!
by newkirkinc1. February 26th 2020 4:02 pm
1965 Ford Econoline
by Deathorvictory. February 26th 2020 3:51 pm
Front Air Dam off 1979 Dodge Van- $75
by Deathorvictory. February 26th 2020 3:34 pm
Flares for 01 ford
by VANMANED. February 26th 2020 2:24 pm
Extra Rolling Heavy Back Issues?
by Charlie99909. February 26th 2020 12:28 pm
Featured Links
Vanning.Com is a an authorized Amsoil Dealer


Previous Thread
Next Thread
Print Thread
Rate Thread
GMC Vadura 2500 brake light issue #749355
June 08th 2019 10:55 am
June 08th 2019 10:55 am
Joined: Jun 2019
Posts: 1
Madison, Ms, USA
M
MattyG Offline OP
stranger
MattyG  Offline OP
stranger
M
Joined: Jun 2019
Posts: 1
Madison, Ms, USA
When I turn on my parking lights/headlights both filaments of the rear tail light bulb ignite. This makes the brakes useless if the headlights are on. A more simple way of putting it is the brake lights don’t work when I turn the headlights on. but like I said above, actually what is happening is the brake light and the tail light are ignited together when you turn on the parking lights/headlights. Any suggestions on how to fix this? Thanks in advance

Last edited by MattyG; June 08th 2019 10:56 am.
Re: GMC Vadura 2500 brake light issue [Re: MattyG] #749357
June 08th 2019 2:56 pm
June 08th 2019 2:56 pm
Joined: Sep 2005
Posts: 8,859
Hickory Flat, Jawga
CatFish Offline
carpal tunnel
CatFish  Offline
carpal tunnel
Joined: Sep 2005
Posts: 8,859
Hickory Flat, Jawga
You didn't say what year model you have.
1. If you have pre 1996 then it sounds like a bad ground connection on the rear lights or perhaps some past bad wiring repairs. The parking lights are possibly reaching ground thru the brake light side of the bulbs. If this is the case then the brake light filament will glow with the parking light side because current is flowing back thru it.
If you happen to have a 4-way trailer plug that a previous owner perhaps "wired" in, that would be a good place to start. rolleyes Otherwise start checking for a bad ground. You can remove one bulb at a time and check to see if it's related to one side or the other.

2. Many of the later models (1996 thru about 2000) GM's had rear wiring harness problems from the factory. My company had GM service vans during that time period and almost all of them had problems to some degree. They would exhibit the same problems you relate.

My2%

Last edited by CatFish; June 08th 2019 3:10 pm. Reason: kant spel good

Moderated by  Astro 

Donate


Upcoming Events
Vanfest 2020
06-12-2020
discovery
Who's Online Now
0 registered members (), 6 guests, and 2 spiders.
Key: Admin, Global Mod, Mod
Newest Members
CherryBomb, Jarwood, Corts91, captainchrysler, ConradK
11343 Registered Users
Top Posters(30 Days)
kursed 63
Wedgy 46
frscke1 45
Lee7673 32
Forum Statistics
Forums68
Topics36,913
Posts528,262
Members11,344
Most Online177
May 8th, 2013

Powered by UBB.threads™ PHP Forum Software 7.6.1.1