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2009 2500 hd duramax, Sometimes on start-up inst cluster is…

2009 2500 hd duramax, ...

2009 2500 hd duramax,

Mechanic's Assistant: Are you fixing your 2500 yourself? What have you tried so far?

Sometimes on start-up inst cluster is inop no gauges work but truck starts and runs fine. Lights and turn signals work but turn signal sound does not.

Mechanic's Assistant: Have you checked the fuse?

Fuse seems fine and some times working the power cable and adjusting the main fuse box and re-starting the truck all is well for weeks at a time

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

That's it

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Answered in 6 minutes by:
3/7/2018
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 30,401
Experience: GM Grand Master Technician 2007. 14 years experience.
Verified

Hello there, I am Cam.

I am Licensed technician at a GM dealership with more than 16 years experience. 
Like you, I am a user of this website and as such, any billing questions should be sent to customer service.

I ask that you please provide details and communicate with me so we can make your experience here worth 5 stars! I am around most days but not every minute of every day. If you reply while I am offline, I will respond when I am next online. 

I am reviewing your request and will post in a moment.

So when this happens, is the radio and heater out as well?

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Customer reply replied 4 months ago
I don't recall specificity but they may be

The system sounds are generated through the radio so it would make sense that it was.
how often does it seem to happen?

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Customer reply replied 4 months ago
couple times a quarter not every month but often enough to be unnerving at times
If you don’t have any other symptoms and it only does it occasionally, I would be suspecting an issue with one of the relays underneath the hood or perhaps even a software issue in the computer. The relays you can try moving around yourself for replacing, but the software is not something you can update yourself. With it not acting up consistently, I’m very hesitant to suggest any repairs. It would be like searching for a needle in a very large haystack.
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Customer reply replied 4 months ago
are these the relays on the main power fuse block under the hood?
Even just rotate them around and see if that makes a difference.
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 30,401
Experience: GM Grand Master Technician 2007. 14 years experience.
Verified
GM Tech (Cam) and 87 other Chevy Specialists are ready to help you
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Customer reply replied 4 months ago
k thanks
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