When I release my parking brake my daytime running lights Flicker and go off

KJONESY

MEMBER
2002 PONTIAC SUNFIRE
2.4L
4 CYL
2WD
MANUAL
323,375 MILES

But when I turn my headlights on to dim my dim lights and fog lights work but my brights won't work they just flicker then go off. When the lights flicker off and on the relay in the fuse box clicks, but I had replaced that and it still does the same thing.

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
42,904 POSTS

Hello,

It sounds like the BCM is going out. To be sure here is a guide to help you test the wiring and the DRL wiring diagrams with eh BCM location below:

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

If the BCM is bad it will need to be programmed in should cost about $130.00. You might want to unplug the BCM and then plug it back in to help clean the connections. Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.

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Tuesday, April 2nd, 2019 AT 11:40 AM

KJONESY

MEMBER
2 POSTS

Hey thanks for the reply, there was another person who replied back bur for some reason I had to go to Facebook to reply and I don't have Facebook. Anyways when the car is running and I release the park brake all my lights flash and go out. But if I turn my lights to dim all my front lights work but I won't have bright lights. And I did change all my headlights just to make sure. So when I release the park brake there is a clicking in the relay that's located in the fuse box

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Tuesday, April 2nd, 2019 AT 5:09 PM

JOETECHPRO

MECHANIC
705 POSTS

Hey KJONESY,

The relay you are pointing at should be the daytime running light relay.

With your vehicle with the headlights completely off the daytime running lamps should come on when you release the parking brake. This is normal. With the ignition on/vehicle running the park brake turns the daytime running lights on and off.

When you switch the headlights on the daytime running lamps that were on will be switched off and you will then have low beam headlights. You should then be able to switch between low and high beam and flash the high beams.

Can you please retest your lights to be sure which do not work and that the operation is abnormal.

This is best done with two people, one to operate the lights and one to watch which lights come on outside the vehicle.

If you find anything please take a video if you can it may explain a little better the problems you are having.

When did you get this vehicle?

Regards, Joe

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Wednesday, April 3rd, 2019 AT 8:39 AM