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I have a 2012 gmc 6.6 duramax cranks but it won't start.I…

Customer Question
I have a 2012...

I have a 2012 gmc 6.6 duramax cranks but it won't start.I already change the fuel filter housing and the fuel filter.

Mechanic's Assistant: Is the fuel filter an external one, or is it inside the tank?

External one.

Mechanic's Assistant: What is the model of your '12 GMC?

2012 gmc Sierra 2500

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

Yes.I change the fuel filter,filled with diesel and truck just cranks but no start.already check all fuses and relays.also I disconnected the lines coming from the fuel tank and ur a gallon of diesel with a pair of fuel lines to see if my pump was week.

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

How can I check the ficm and my fuel pump.

Submitted: 2 months ago.Category: GMC
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Answered in 2 hours by:
5/29/2018
GMC Mechanic: Gm Tech (Cam), GMC Mechanic replied 2 months ago
Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 1,815
Experience: GM Grand Master Technician 2007. 14 year 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.

Are there any codes set?

Ask Your Own GMC Question
Customer reply replied 2 months ago
There is not codes at all.
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