Going to replace mechanical lift pump on my 6.2 Jimmy with a electric fuel lift pump. I replaced the mechanical lift just a month a or two ago, and it appears to have stopped working, not sure why. When I replaced the old mechanical lift pump it appeared to damaged, and not working. The new seemed to work fine for a while, and then the other day I was at work and it kept stalling. I thought it was the fuel filter, or maybe that I had run the fuel tank to empty (guage does not read right, think it maybe sender in tank having the problem. When I replaced the primary fuel filter, I noticed that the filter was not all the way full. Tried the turning the engine over with the the fuel filter removed (to check the pump) no joy. Added 8 gallons of diesel and repeated, still no joy. Decided instead of going through the painstaking reinstall of another mechanical, just replace with an electric. Got a generic lift pump from NAPA, says its good for gas or diesel. I looked under the Jimmy tonight and and was looking for a good place to mount. Looking for suggestions on why mechanical lift failed, and thought about the electric and where to install. Instructions say mount in the back near fuel tank.