No taillights or parking lights?

2009 CHEVROLET IMPALA
3.5L • AUTOMATIC
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BIGEDOGG37
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  • 3 POSTS
Parking lights and tail lights not working turn signal works brake lights work parking lights flash when locking and unlocking car replaced the headlight switch replaced the 2 parking lights fuzes
Sep 20, 2026 at 8:50 AM
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STRAILER
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  • 55,540 POSTS
It could be a BCM problem but I would swap out the Park LP PCB relay in the fuse panel under the hood. Please check out the image below.
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Sep 20, 2026 at 9:56 AM
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BIGEDOGG37
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That is not the right image for my car I do not have a park LP pcb that is changeable I have to replace the whole fuze box to replace that
Sep 21, 2026 at 4:28 PM
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STRAILER
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  • 55,540 POSTS
Hmm, with the running lights on, see if the LT and RT fuses get power. Also, the white wire to the fuse panels should go to ground. Here are wiring diagrams so you can see how the system works. This guide can help check for power and ground.

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

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Sep 22, 2026 at 7:58 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,540 POSTS
Also, we should do a CAN scan to see if there are any codes for the BCM, this video will help

https://www.youtube.com/watch?v=u-4syLc-ifQ&pp=0gcJCSAMAYcqIYzv

Sep 22, 2026 at 8:09 AM
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