Turn signal problems

Turn signal: Lights that indicate the direction of the turn the car that is still moving will take.
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Brake lights

Chevrolet Express 2001 Express  250000 miles
There's random clicking under the dash like a turn signal click at random times but nothing is on till I turn it on. And when the headlights are on the brake lights don't work. But when the headlights are off the brake lights work. What causes this and how do I fix it?
Wingnut from United States 2 years ago  
WI
5 reports 
Wingnut from United States 2 years ago
I'm still trying to figure this out. Anyone?
Timothy hufferd from United States 2 years ago
After market radio by chance
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No right rear brake or turning signal

Chevrolet Express 2009  466781 miles
The right rear brake reverse and turn signal aren’t working, so I checked the fuse box and where you can put a fuse in there’s no wiring the fuses just drop in so there’s no plug for the fuse for the right rear
1
Mike from United States a year ago  
MI
5 reports 
Roc504 from United States a year ago
Check the ones under driver sear
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Troubleshoot lights

Chevrolet Express 2013 2500 230735 miles
Stop light and hazardous and blinkers aren’t working
RonDon from United States 5 years ago  
RO
15 reports 
Felicia from United States 2 years ago
I'm having the same issue after installing wiring harness for trailer. Not sure what happened.
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Electric problem

Chevrolet Express 1999 Boxtruck  85000 miles
I have a 99 Chevy express 3500 5.7 Boxtruck have a problem with blowing fuses disconnect battery replace fuse when reconnect the battery abs fuse blow under hood when u turn switch on turn signal fuse blow under dash
LoveBullmastif from United States 2 years ago  
LO
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