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

95 S_Trucker · 09-27-2018, 06:47 AM

The fuel pump will prime for 2 seconds, then the ECM/PCM will provide a ground for the fuel pump relay.

Can we stop telling the op that the oil pressure switch supplies power to the fuel pump? It is a back up only when the relay fails!

09-27-2018, 06:47 AM	#10
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,179	Re: Cut wires on door - 1992 c1500 The fuel pump will prime for 2 seconds, then the ECM/PCM will provide a ground for the fuel pump relay. Can we stop telling the op that the oil pressure switch supplies power to the fuel pump? It is a back up only when the relay fails!