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Juan Crespo
Juan Crespo, ASE Certified Technician
Category: Chevy
Satisfied Customers: 1526
Experience:  A.S.E. Master Technician, Advanced Level, Emissions - Asian, Domestic, & European
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When I turn on the left turn signal both the left and right

Customer Question

when I turn on the left turn signal both the left and right turn signals on the trailer blink
JA: Have you checked the fuse?
Customer: I checked all four 10 amp fuses on the driver side instrument panel all are good
JA: What is the model of your '10 Chevy?
Customer: 2004 1500 4wd
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: checked the wiring on trailer all good, when I turn on the right side signal the trailer works fine
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 10 months ago.
Category: Chevy
Expert:  Juan Crespo replied 10 months ago.

Hi there.

If turn signals work OK with the trailer disconnected, then the issue is with the trailer connector or trailer wiring. Are you working with the OEM or an aftermarket trailer plug?