BrianBrianBrian
TYF Newbie
- Joined
- May 30, 2016
- Posts
- 10
- Reaction score
- 1
I've copied the title of this thread from another thread with almost the identical problem. Not that it really matters, but mine is a 98 2 dr. My reason for the new thread is that the other thread is pretty old and the ultimate answer to solve their issue has not solved mine?
99 Tahoe weird tail light/brake light/hazard light/blinker problem NEED HELP
So I'm at a loss as to what is happening with my tail lights. To bring everyone up to speed, here are the things I've done so far to try and fix this craziness.
Please watch the video I’ve included, it pretty much sums it up.
When the headlights are set to OFF, and DRL active:
Things to note:
While many others have reported similar problems, the answers that solved their issue I’ve tried and to no avail. Some have mentioned the MULTI-Switch. Are there ways to test the MULTI-Switch without tearing everything a part? The way I see it, there’s obviously power going to the taillights but the synchronization is funky, which leads me to think wires are crossed. That thought however has holes in it because the wires have never been spliced or messed with other than the time a trailer brake harness was installed and the lights have worked just fine for many years after any of that was done. Someone mentioned the ground wires, well cleaned the grounds and said a prayer...NOPE.
Anywho….I appreciate anyone’s help or suggestions on this
-Brian
99 Tahoe weird tail light/brake light/hazard light/blinker problem NEED HELP
So I'm at a loss as to what is happening with my tail lights. To bring everyone up to speed, here are the things I've done so far to try and fix this craziness.
- All six bulbs replaced
- New taillight housing
- New taillight circuit boards
- Used a wire brush to clean the ground connection
Please watch the video I’ve included, it pretty much sums it up.
When the headlights are set to OFF, and DRL active:
- Everything seems semi normal.
- Passenger taillight goes out when the brake is applied
- Passenger taillight blinker blinks rapidly like when you have a blown bulb
- In REVERSE and DRIVE, passenger taillight turns OFF when brake is applied
Things to note:
- There is a trailering wire setup. Installed a long time ago before this problem occurred. I checked over the wires and didn’t notice any loose wires. Everything seemed to be wrapped up pretty tight.
- Not sure if it matters, ABS light is on and has been on for a long time. Pretty sure that’s related to something else but who knows at this point. Just thought I’d point that out.
- Main battery terminal wires are all new
- Alternator is new
While many others have reported similar problems, the answers that solved their issue I’ve tried and to no avail. Some have mentioned the MULTI-Switch. Are there ways to test the MULTI-Switch without tearing everything a part? The way I see it, there’s obviously power going to the taillights but the synchronization is funky, which leads me to think wires are crossed. That thought however has holes in it because the wires have never been spliced or messed with other than the time a trailer brake harness was installed and the lights have worked just fine for many years after any of that was done. Someone mentioned the ground wires, well cleaned the grounds and said a prayer...NOPE.
Anywho….I appreciate anyone’s help or suggestions on this
-Brian