Drivers side taillight, brake light and turn signal not working

2007 CHEVROLET EXPRESS

224,000 MILES • 4.3L • V6 • 2WD • AUTOMATIC

WES MITCHELL

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Tailight does not work at all when running lights are on. Brakelight does not work at all either. Blinker works seldom but seems to work when steering wheel is in certain position. When turn signal does work tailight does not. Switched bulb made no difference.

Dec 17, 2019 at 4:30 PM

STRAILER

CERTIFIED EXPERT
53,854 POSTS

Hello,

It sounds like the flasher module is out. to be sure let's check the fuses because there are many that run the system here is a guide to help and the fuse location with the blinker wiring diagrams to show you how the system works.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

Images (Click to enlarge)

Dec 19, 2019 at 12:55 PM