hummung noise

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humming noise coming from underneath cab

jesse1055 in Gallup NM

May 30, 2010

1 Reply

Popular Answer

sixty6chevyon Feb 10, 2011

it is usually the electric fuel pump. try to listen near the fuel tank under the truck and have someone else turn the key on without starting the truck.

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What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 2003 GMC Sierra 2500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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1 Reply

Popular Answer

sixty6chevyon Feb 10, 2011

it is usually the electric fuel pump. try to listen near the fuel tank under the truck and have someone else turn the key on without starting the truck.

Join the conversation!

What are the best GMC repair shops?

RepairPal Certified shops can diagnose and repair your 2003 GMC Sierra 2500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.