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GM Tech (Cam)
GM Tech (Cam), GMC Mechanic
Category: GM
Satisfied Customers: 27667
Experience:  GM Grand Master Technician 2007. 11 years experience.
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Need a picture and description of the dash warning lights on

Resolved Question:

Need a picture and description of the dash warning lights on a 2007 GM 5500
Submitted: 4 years ago.
Category: GM
Expert:  GM Tech (Cam) replied 4 years ago.
Chat Conversation Started
GM Tech (Cam) :

Welcome

GM Tech (Cam) :

We are in a live chat window now.

GM Tech (Cam) :

Is there a light you are looking for ?

GM Tech (Cam) :

[IMAGE][SRC][/SRC][ALT][/ALT][WIDTH]219.5945945945946[/WIDTH][HEIGHT]100[/HEIGHT][STYLE][/STYLE][/IMAGE]

GM Tech (Cam) :

Sorry, try this.

GM Tech (Cam) :

Full Size Image

Customer :

above the tach gauge, it looks like a guage with a pointer and an arrow pointing down

GM Tech (Cam) :

The one I highlighted or circled?

Customer :

1 light over from the hi beam indicator to the left

GM Tech (Cam) :

Full Size Image

GM Tech (Cam) :

That is a green cruise control light.

Customer :

What is the arrow that points down when comes on. It is comming on without the cruise on and it defaults to a limp home mode?

GM Tech (Cam) :

ok, maybe this is a different light. Does your cluster look exactly like this one.

Customer :

Yup, what would make it come on without the cruise set and go into limp home mode?

GM Tech (Cam) :

That is the strange part. That light should only come on for cruise. It is green? but you say there is another arrow?

Customer :

Forget the arrow, Any ideas why it comes on without the cruise set and when it does it goes to low power?

GM Tech (Cam) :

That sounds like a glitch in the system them. Does the check engine light come on?

Customer :

Yes, when you are at highway speeds and you accelerate hard it the green light comes on first then the check engine light, you stop and idle or shut it off and will reset untill you do it again

GM Tech (Cam) :

OK, that may be the fuel pressure. This is the Duramax?

Customer :

Yes

GM Tech (Cam) :

There is a common issue with these engines. It is the fuel pressure relief valve. This valve is a small plug in the end of the drivers side fuel rail. When they get hot, the start to open a bit too soon and set this code. There is a cheap solution to this. A shim that will hold the pressure back. Here is a website that sells these shims. http://dmaxstore.com/index.php?main_page=product_info&products_id=93

Customer :

Thanks

GM Tech (Cam) :

You are welcome.

GM Tech (Cam), GMC Mechanic
Category: GM
Satisfied Customers: 27667
Experience: GM Grand Master Technician 2007. 11 years experience.
GM Tech (Cam) and 3 other GM Specialists are ready to help you

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GM Grand Master Technician 2007. 11 years experience.