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I have a 2003 Yukon. My right turn signal fuse keeps on

Customer Question
Good morning Kevin....

Good morning Kevin. I have a 2003 Yukon. My right turn signal fuse keeps on blowing. Have changed the front right turn signal bulb, the rear turn signal bulb, and checked the wiring around the bulbs for any shorts. I have also checked the trailer connector for any frayed wires or shorts. No luck. Fuse still blows.

Mechanic's Assistant: Do all the fuses have the correct amperage for the circuits they're in?

Yes. They are 10A

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

I am doing this myself. The right front turn signal bulb was blown and I have replaced it. The rear turn signal bulb looked good, but I switched it with another bulb from the rear assembly. When I turn on my hazzards, the right turn signal in the side mirror is very faint.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

That's all.

Submitted: 5 months ago.Category: GMC
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Answered in 18 minutes by:
11/16/2017
GMC Mechanic: Pete, GMC Mechanic replied 5 months ago
Pete
Pete, GMC Mechanic
Category: GMC
Satisfied Customers: 31,730
Experience: GM training and dealer tech for 14+ years. Diagnostics
Verified

Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.

Can you tell me what liter engine is in your model as well as the fuse amperage and location just so I look this up properly?

Let me know,thanks Pete

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Customer reply replied 5 months ago
5.3 liter engine and it’s a 10 amp fuse.
GMC Mechanic: Pete, GMC Mechanic replied 5 months ago

Can you open your glove box door and check to see if on the code label chart on the inside of the door if you have code Z75 or X88 on it for me?

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GMC Mechanic: Pete, GMC Mechanic replied 5 months ago

O.k.,at the rear of your vehicle under it on the frame rail usually next to or behind the spare tire is a wiring junction block.There should be several connectors plugged into this flat or square box on the frame rail itself.Disconnect the connectors and check for any wiring damage or corrosion in the connectors or wires as well as the junction block.If nothing is seen as an issue with these disconnected put in a new fuse and try the turn signal again and let me know if it shorts out again.I have had to replace connectors at this block as well as the junction block itself for this issue so lets start there and see if any issues are seen and let me know.

https://www.dropbox.com/s/552g5mcz4oewuqo/jb-11-16.gif?dl=0

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service,your 5 star rating is appreciated ( should be a link to click on here or above).You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.

Thanks Pete

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