When I turn my headlights on my brake lights turn on as well?

Asked by Dwayne Feb 10, 2022 at 09:13 PM about the Chevrolet Silverado 3500

Question type: General

Searched For: When I Turn The
Headlights On The Brake Lights Come
On To 1998 Chevy Silverado 3500

4 Answers


Could be a grounding problem with the bulb socket in the back . The running lights don't have a good ground so they go through the brake light , I think . A multi meter is useful to find what has power/ground and what don't .

1 people found this helpful.

Pickup trucks have a particular problem with this. They collect mud/dirt in the back and it corrodes electrical stuff. You've had twenty-four years of this; expect it to get worse.

1 people found this helpful.

It's shorting out the positive wire, check under the bed for smashed wires thatvare touching together


As you didn't state the year I'm going to give you all that I know about. Older one had a circuit board that would mess up and cause wrong bulbs to light, bad light bulb sockets they will show burnt ma arks usually inside the plastic and where the ground wire would attach, cross circuited trailer plugs, damaged rear harness due to accident or hitting something on the road. Hope this helps.

Your Answer:

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