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HDGENE
HDGENE, ASE Master Tech
Category: Chevy
Satisfied Customers: 5132
Experience:  25 years Auto experience, Ford, GM, Chrysler, Asian & European
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I do not have any brake lights or blinkers on my left side

Customer Question

I do not have any brake lights or blinkers on my left side of my trailer. 2004 chevy silverado
JA: Have you checked the brake light switch? How about the fuses?
Customer: where is the brake light switch? yes checked the fuses
JA: What is the model of your '04 Chevy?
Customer: Silverado 1500 z71
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: yes. new fuses and flasher control switch
JA: Anything else you think the mechanic should know?
Customer: not that I can think of off hand
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Chevy Mechanic about your situation and then connect you two.
Submitted: 9 months ago.
Category: Chevy
Expert:  HDGENE replied 9 months ago.

Hello, only on the trailer or the truck isnt working either, you checked the trailer supply fuses as well as the regular fuses?

Customer: replied 9 months ago.
only on the trailer. yes we checked the fuses
Expert:  HDGENE replied 9 months ago.

Ok long as you have power coming in from the trailer plug on the truck the issue would have to be with the trailer wiring or the lights on the trailer, Inspect for power and ground to the inoperative lights. If the bulbs are blown, replace the bulbs, if the sockets have corrosion the sockets would need to be replace.d The main ground should be good for the trailer with the other side lights working. Inspect all splice points or scotch locks for the left side and wiggle the harness to see if its a wiring issue.

Customer: replied 9 months ago.
inspected all of them and still not working on left side
Customer: replied 9 months ago.
could it be a problem with my factory plug?
Expert:  HDGENE replied 9 months ago.

That would be what to check with a voltmeter to see if there is a voltage drop or short in the plug.

Expert:  HDGENE replied 9 months ago.

here is the schematic for your trailer circuit

Expert:  HDGENE replied 9 months ago.

Hello, do you need more help with this concern?

Expert:  HDGENE replied 9 months ago.

Hello, do you need more help with this concern? The question remains open until it is rated