No Rear Brake Lights.... Third Brake Light Works.

[Cadrian]

My Rear brake Lights aren't working... But my cab brake light is. On my 2003 Silverado

 

So far I have replaced the Brake Switch, and the Brake Switch Harness (3 wires were broken on it so I replaced it.... I gained my cruise control back but no Brake lights) of course I changed out the brake bulbs themselves.

 

Today I replaced the rear tail light circuit board but still didn't do anything.

 

O ya I have checked all the fuses plus the lights light up when I turn the hazard lights on.

 

What else can I check?

 

Thanks ahead of time.

[govtech]

all that could have paid for diagnoses Josh,my god ,hind site ..i know

 

,do you have a schematic ? and understand how to follow it ? and by the process of elimination you will find the problem,

 

some electrical experience is needed also ....

 

maybe someone here can fire off a schematic for you

[ryank1]

Usually the turn signal switch causes the issue that you are describing. The brake lights feed through that switch and are seperate from the 3rd brake light.

[govtech]

i was thinkin the same but was unsure ...thats why a schematic would help ya know

[absinthminded]

Hey, did you ever find the fix for this? I'm having the same issue.