ilmk123
Member
I have a 96 GMC Yukon Suburban with fuel pump problems. I have some questions. The problem is electrical. I have 12 volts at the pump for only a few seconds. I know that it is suppose to pump up for a few seconds and then shut off. The problem is that the pump never comes on. We have checked the ground and re and re checked everything. Have replaced the pump. Hooked the old pump to battery and it runs. So Is there a pressure shut of for the pump? Is it just a check valve type of system and does not shut off the pump? Does the pump run all the time the burb is running? Thinking of just running a igntion on hot wire back to the pump. I know that it means the pump would still be running in case of accident. If any buddy has a schematic of fuel pump system that would be great! I hope somebody can answer my questions. Thanks in advance! Scott