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Hello, Ja sets up different promos at times, you select which you want so,, with that said? usual is a deposit, then we work the problem, Give and answer then? you accept/rate us then? most important.. even after rating or accepting our answer the post does not close , You can still come back to same post with any followups at no add'l charge so if you decide to proceed? i would need all the question details etc to see if I can help, Let me know, Thanks
odd so you are saying with vehicle turned off, keys out all brake lights work ok but they dont work when you turn headlights on? or something different?
how about just parking lights and,, do NONE of the brake lights work as well as the 3rd high mount brake lights?
this one ? I am unsure of. brake lights use different grounds etc so best I opt out and open the post to the other experts
good afternoon my name is ***** ***** I will assist
the first thing that comes to mind is the bulbs. have they been changed and has any wiring been done? I wonder if the brakes are the dull side and park lights are the bright side of the bulbs
just to check, remove the socket and bulb assembly and have someone work the lights for you and see if the other filament comes on with the brake lights when the parks are on
ok, without being there and testing my self, I cannot continue on this forum. I will open it up to the other guys to see if they have any ideas
I am surprised no one has given you a wiring diagram as of yet. Here is it,
The taillight and the brake lights share the same ground, so a ground wouldn't be the issue.
The stop and taillights also share the same feed wire, so that wouldn't be it either up to the b4 splice.
You could possibly have a shorted relay so, remove the tail relay and/or the tail fuse to eliminate that taillight circuit for right now, then turn the headlights on park and press the brake pedal and let me know if the brake lights work now.
try a new tail relay.
Drivers side junction box, the same box that fuse was.
If that fixes it don't forget to rate me well, if it doesn't fix it let me know so we can continue.
Do you still have an owners manual?
There is a short in the tail lamp circuit. Try leaving that tail fuse out and feel if that relay still gets hot.
What amp fuse is in it? It's supposed to be a 15 amp.
Anyhow, stick an ammeter in that fuse's socket and measure the amperage while the relay is back in and see what is going on. You will have to turn the light switch on. Make sure that isn't a harbor freight fuse cause GM had a tsb out on their fuses saying they could short them fuses out across the battery and they still wouldn't blow. Just put in a new 15a fuse after checking the ammeter draw.
Then if the ammeter draw is over 15 amps, pull both front parking light bulbs one at a time and read the ammeter after removing each bulb. Then start disconnecting or removing each bulb listed at the bottom of that wiring diagram where C comes in, starting with the stop fuse, then the license bulbs and checking the ammeter after removing or disconnecting each one.