The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Cut wires on door

Stormin08 · 09-26-2018, 08:58 PM

i belive your pump should prime for about 3 secs when the key is tuned to on...once the engine fires, the ecm continues the signal ( grounding) of the fuel pump by way of the oil pressure SWITCH to continue running.

there is also an oil pressure sender for the gauge, that is down by the filter.

09-26-2018, 08:58 PM	#7
Stormin08 Registered User Join Date: Sep 2018 Location: Moss Bluff, LA Posts: 381	Re: Cut wires on door - 1992 c1500 i belive your pump should prime for about 3 secs when the key is tuned to on...once the engine fires, the ecm continues the signal ( grounding) of the fuel pump by way of the oil pressure SWITCH to continue running. there is also an oil pressure sender for the gauge, that is down by the filter.