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I had a bad left rear tail light harness but could not get…

Customer Question
I had a bad...

I had a bad left rear tail light harness but could not get the but could not get the correct bulb configuration in a new harness SO I decided to clip off and try to replace just the bad bulb socket. It did not work. I went back to the drawing board and ordered a matched set of tail lights and tail light harnesses. However, once I changed them out, The drivers side does not flash. I may have shorted something out when I tried to rig it.

Mechanic's Assistant: Have you checked the bulbs? Have you checked the connection?

The bulbs are all brand new and the connection is good, the lights all come on when I unlock the vehicle it just does not work when I use the turn signal or the flashers.

Mechanic's Assistant: What is the model/year of your Chevy?

2011 Silverado 1500

Mechanic's Assistant: Are you fixing your Silverado 1500 yourself? What have you tried so far?

Yes, if I can. I checked the fuses on the engine but besides changing out the harness that is all so far.

Submitted: 3 months ago.Category: Chevy
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Customer reply replied 3 months ago
that is all the info I have right now
Answered in 9 minutes by:
3/21/2018
Chevy Mechanic: Jerry Newton, Chevy Technician replied 3 months ago
Jerry Newton
Jerry Newton, Chevy Technician
Category: Chevy
Satisfied Customers: 5,666
Experience: ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.
Verified

You only have this problem on the left rear side? All other lights work?

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Customer reply replied 3 months ago
Left side does not flash both front and rear
Chevy Mechanic: Jerry Newton, Chevy Technician replied 3 months ago

The lights come on but don't flash?

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Customer reply replied 3 months ago
correct, they come on when I unlock the car, etc but will not work in flashing mode
Customer reply replied 3 months ago
still with me?
Chevy Mechanic: Jerry Newton, Chevy Technician replied 3 months ago

Yes, sorry, had to take a phone call. Working with multiple people at once.

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Customer reply replied 3 months ago
Understood, any thoughts?
Chevy Mechanic: Jerry Newton, Chevy Technician replied 3 months ago

Yes, let me look at some schematics on this, bear with me.

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Chevy Mechanic: Jerry Newton, Chevy Technician replied 3 months ago

The LT STOP TURN fuse is good, yes?

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Customer reply replied 3 months ago
where is that fuse located?
Customer reply replied 3 months ago
under dash or on top of engine?
Chevy Mechanic: Jerry Newton, Chevy Technician replied 3 months ago

This will be under the dash.

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Customer reply replied 3 months ago
I do not know, I only checked the ones above the engine, let me check
Chevy Mechanic: Jerry Newton, Chevy Technician replied 3 months ago

OK

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Customer reply replied 3 months ago
looks to be OK, need to end our chat, have to go to a meeting
Chevy Mechanic: Jerry Newton, Chevy Technician replied 3 months ago

OK, the answer here is short, though. The BCM controls these light functions, including the flashing, so if it's not doing what it's supposed to do, the BCM is at fault.

This will probably need a new BCM.

Please take a moment to rate my answers by clicking on the stars at the top of the page, that's how I get compensated. If you need more help, just let me know, I am happy to follow up.

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Chevy Mechanic: Jerry Newton, Chevy Technician replied 3 months ago

Did you get this worked out?

Please take a moment to rate my answers using the stars at the top of the page, that's how I get compensated. Let me know if you need anything else, I am happy to follow up.

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