Park lights tail lights brake lights not working

1994 CHEVROLET SILVERADO
160,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
Avatar
JEFFREY GATOR
  • MEMBER
  • 2 POSTS
On my 1994 Chevrolet 1500 my Park lights tail lights and brake lights are not working or Dash lights. Can anyone please give me some suggestions thank you so much for your time
Jun 7, 2021 at 9:17 AM
Advertisement
Avatar
KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
The most likely cause of this is the multifunction switch as these bulbs are run through the switch. I would suggest starting with checking for power coming out of the switch and if you don't have any then I would replace it and go from there.

https://www.2carpros.com/articles/how-to-check-wiring

It is unlikely that the interior lights are related to this so I would just start with the exterior and if it repairs both then that is a bonus.

Below are the wiring diagrams that we need to test this. Please let us know if you have questions and what you find. Thanks
Images (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Jun 8, 2021 at 10:57 AM
Avatar
JEFFREY GATOR
  • MEMBER
  • 2 POSTS
Okay, thank you. I will give this a try and let you know the outcome of this I really appreciate it.
Jun 8, 2021 at 11:19 AM
Avatar
KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
You are welcome. Yes please let us know as I am curious about it. Thanks
Jun 9, 2021 at 12:47 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.