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Tool Hut
Tool Hut, ASE Certified Technician
Category: Chevy
Satisfied Customers: 494
Experience:  Owner of a mobile diagnostics company assisting auto technicians with difficult vehicles
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I have a 2003 C4500 with an 8.1L. When the front tank is

Customer Question

Hello I have a 2003 C4500 with an 8.1L. When the front tank is empty the secondary pump on the frame is not turning on to transfer fuel from the rear tank & need a wiring schematic to find out why its not getting power.
Submitted: 1 year ago.
Category: Chevy
Expert:  Tool Hut replied 1 year ago.

I attached a schematic earlier

Expert:  Tool Hut replied 1 year ago.

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