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Username Post: 2005 Silverado brake light problem        (Topic#190958)
catchatoad 
Newbie
Posts: 4

Reg: 06-01-08
06-01-08 05:16 PM - Post#1446188    

I have a 2005 Silverado that has a short in the electrical system somewhere that effects the drivers side brake light. The truck is out of warranty.
The brake light is not out all the time (sometimes it works and sometimes it doesn't) and once in a while when I start it up (or shortly after) you can hear a clicking noise near the console between the drivers and passengers seat.

Anyone else here of this or is there a quick fix?

Thanks - Terry



 
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sierra_5.3 
Contributor
Posts: 455
sierra_5.3
Loc: South Louisiana
Reg: 03-29-07
06-01-08 05:41 PM - Post#1446217    
    In response to catchatoad

My buddy had the same problem with the same year truck on the DS too. He brought it to the dealership and the found that the wiring harness under the bed had a short in it due to the way they routed the wires from the factory. I would start there and also check the harness going into the light. As for as the clicking noise I am not sure. hope this helps
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catchatoad 
Newbie
Posts: 4

Reg: 06-01-08
06-01-08 05:43 PM - Post#1446223    
    In response to sierra_5.3

Thanks... A appreciate it.

 
recover 
Newbie
Posts: 1

Reg: 06-18-08
06-18-08 03:06 PM - Post#1459099    
    In response to catchatoad

I have the same problem with the same model on the DS too. But, my stop light comes on when I turn my headlights on, but when I hit the breaks, the light does not get brighter. Any solutions?

 
wolfz23 
Forum Newbie
Posts: 95

Reg: 03-28-08
06-22-08 06:08 PM - Post#1461804    
    In response to recover

GM trucks/suv's are notorious for loose brake switches. Meaning that the switch itself gets loose/out of place and causes intermintent brake light issues. however, this would affect BOTH brake lights.
Only 1 side going in and out, is most likely a plug/socket problem.

I believe (THINK) that the brake circiut on GM trucks is a single wire, from front the BCM to the rear and its split - right/ Left under the truck in the harness/plug near the or above the spare tire.. closer to the drivers side frame rail.

The plug most likely has 1 wire on the foreward side of it and 2 wires @ 1 terminal on the tailgate side.

I wolud check there.

If you cant find or dont have this type of setup, I would get a digital multi meter, pull out both brake light assemblys, and meter the brake light wire (most likely its a Light green,light blue, or white wire) and see what your voltage is. It should read 12V + when the brake pedal is being pushed. If it doesnt read AT LEAST 11 volts while the brake pedal is pushed, you have a wiring issue somewhere. If it DOES read 11+ then you have a lightbulb/ socket issue.

The aboove test is the best way to narrow down the issue, but may require a 2nd person to push the pedal, as well as you would HAVE to test it, while you are having the problem. (if its working properly, then you wont be able to test it)

On wiring issues....99% of GM trucks/SUV the wiring for the brake lights,park lights, turn signals, and Reverse will ALWAYS be in the drivers kick panel, behind and to the left of the brake pedal. There is a junction box there, in which you would add trailer brake control wiring, and trailer wiring (if not pre wired).
These wires run along the drivers side of the vehicle INSIDE under the sill plate towards the rear of the cab. Near the seat the Wires will go through a grommet in the floor, and come out under the truck. Once under the truck they will be loomed, and mounted to or inside the frame rail running towards the rear.

the noise you hear/ clicking in between the front seats is probably not related to your brake light issue, for I have never seen a GM truck/suv have ANY of its wires that run outside, anywhere near the center of the vehicle. (drive shaft needs clearance, and gets hot, both of which are really bad for wires)

good Luck

Matt


Edited by wolfz23 on 06-22-08 06:10 PM. Reason for edit: No reason given.

 
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