How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Jared D Your Own Question
Jared D
Jared D, ASE Certified Technician
Category: GMC
Satisfied Customers: 1914
Experience:  Shop Supervisor at County Fleet
Type Your GMC Question Here...
Jared D is online now
A new question is answered every 9 seconds

Ran my 2003 Duramax through a puddle and it stalled out.

Customer Question

Ran my 2003 Duramax through a puddle and it stalled out. Engine will now turn over but not crank up.
JA: Does the engine spark at all? Is there a trouble code or is your "check engine light" on?
Customer: It's a diesel, no spark. Codes came back as "injector circuit malfunction" on all 8 cylinders
JA: Are you hoping to fix this yourself?
Customer: Yes
JA: Great! What have you tried so far?
Customer: Bleeding the fuel filter, continued cranking & hand priming the fuel system has led to a few seconds of running but it just shuts off again
JA: Is there anything else the GM Mechanic should be aware of about your GM?
Customer: Not that I know off
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the GM Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: GMC
Expert:  Jared D replied 1 year ago.


How long has it been since the puddle? Has everything had a chance to dry out?

Expert:  Jared D replied 1 year ago.

Have you attempted to pull the connector on the FICM and see if there is water intrusion?

Customer: replied 1 year ago.
About 7 hrs ago & no water intrusion that I can tell
Customer: replied 1 year ago.
Fuel tank is full, but gauge is reading empty
Expert:  Jared D replied 1 year ago.

Do you have dual tanks or single?

Customer: replied 1 year ago.
Expert:  Jared D replied 1 year ago.

It sounds like the fuel pump connector came loose or a connector between the fuel pump and the engine compartment is loose or corroded.

When you turn the key to the run position can you hear the fuel pump make a brief buzz?

Expert:  Jared D replied 1 year ago.

I would check the connector on the top of the fuel pump (probably have to lower the tank a little), and then the ground shown in this diagram.

Expert:  Jared D replied 1 year ago.

Please don't forget to rate.

Let me know if you need additional info.