Question about 1999 Chevrolet Silverado 1500
I am loosing my prime after truck sits . Any suggestions?
In my experience, if the fuel system is loosing pressure after sitting, then the internal check valve in the fuel pump is to blame. This essentially can only be remedied by replacing the fuel pump. Your pump is an in-tank unit that can only be serviced by dropping the tank and replacing the pump. My recommendation would be to replace the complete fuel pump module. (one piece unit including pump and fuel level sending unit) You may consider purchasing only the electric pump motor to replace within the module, but that typically involves taking the module apart, splicing wires, and risking damage to the housing and level sender unit in the process. I have found that replacing the whole module and the "sock" on the pump, although more pricey, is the best answer due to said issues and usually a better parts warranty coverage. You should also replace the fuel filter at that time or shortly thereafter. The reason being, that when you drop the tank to service the pump, you can stir up sediments that may have settled in the tank over time. They'll collect in the filter and may stop up the system if in excessive amounts. I hope this helps.
Posted on Nov 14, 2008
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Posted on Jan 02, 2017
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