There may be a short circut in the wiring, which will be difficult to trace down. I would recommend taking the vehicle to an automotive electrical shop, where they have the specialized equipment and knowledge for solving this kind of problem quickly and completely. If you let someone mess around with it, you could end up with the wiring harness burned up, which is very expensive to fix.
There are a few reasons why your daytime running lights are flashing. Your wiring could be messed up or your lights might be burning out.
It could be because its running out of battery
Check the daytime running lights module. This has failed with other manufactures resulting in lights that stay on, or are very dim while the vehicle is running.
The lights are computer controlled. The under hood computer can set codes and keep the lights from working.
If you brake lights are not working on your trailblazer it could be due to a number of reasons. Your fuse could be blown, or your light may no longer work.
It could be a number of things. First check all of the fuses. It could be the module which controls the lights but it needs to be checked out. There is also a relay for the daytime running lights on your car i would check into that if all fuses are good.
To fix or disconnect the daytime running lights on a 1999 Grand Prix, you could begin by checking the running light fuse. If the fuse is damaged or blown, you can replace it to fix the lights. Remove the fuse if you want to disable to the lights.
it could be a faulty alternator bring on all lights
When daytime running lights do not work, it means the bulbs may have burned out. It could also mean the fuses have failed or there is a short in the wiring.
the fuse that controls the interior lights, running board,an rear wiper is blown. it is a 15amp fuse in the panel. Also,try the cluster dimmer position since it controls the running board lights and exterior mirror lights as well.This dimmer is located next to the headlight switch.Good luck!
If the running lights won't go off on a 1997 Cadillac Seville, it could indicate a problem with the wiring. Check to ensure all wires are intact.
It could if it was built for the Canadian market. If built for the USA, no.