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I installed fog lights on my 2006 Impala and I can’t get…

Customer Question
I installed fog lights...

I installed fog lights on my 2006 Impala and I can’t get them to work..got the whole wiring harness and changed the switch and the fuse is in and still nothing

Mechanic's Assistant: Have you checked the fuses? Do you know what size fuse it needs?

15 and it’s already in

Mechanic's Assistant: Are you fixing your Impala yourself? What have you tried so far?

Do u think I need a relay?like one of those big square fuses?

Submitted: 3 months ago.Category: GMC
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Answered in 6 minutes by:
3/30/2018
GMC Mechanic: Gm Tech (Cam), GMC Mechanic replied 3 months ago
Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 30,400
Experience: GM Grand Master Technician 2007. 14 year experience.
Verified

Hello there, I am Cam.

I am Licensed technician at a GM dealership with more than 16 years experience. 
Like you, I am a user of this website and as such, any billing questions should be sent to customer service.

I ask that you please provide details and communicate with me so we can make your experience here worth 5 stars! I am around most days but not every minute of every day. If you reply while I am offline, I will respond when I am next online. 

I am reviewing your request and will post in a moment.

YEs the fog lights do require the use of a relay, but its internal to the fuse block. What I suspect is causing your issue is a programming issue. the lights do not simply work on a simple circuit, rather the switch sends a signal to the body control module. Then the body control module provides a ground path for the relay to operate it, then power is sent to the lights. If the body control module is not programmed to think it has fog lights, then it won't work.

So your options are to have a dealer try and program the BCM for the fog light usage, or our in your own switch to provide that ground to run the lights.

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