Don't know anything about cars, but I'm learning after I bought this one lol I just replaced the fuel filter, pump spark plugs, wires, n cap, just finished the pump. Now my car starts but loses power once I put it in grea an give it gas.... Someone told me my car has 3 fuel filters???? It's a 4.3 Vortec... Can someone tell me what I'm doing wrong please??

 

Welcome to the group.

First thing would be to check your work; no leaks at the fuel filter, fuel pressure at he engine.

 

Sounds like a fuel pressure issue. What brand of fuel pump did you put in? I have heard of pumps being bad right out of the box. But so as not to guess, you need to do a fuel pressure/leakdown test. In my signature block is a link to a thread that will take you through the process. You can get a loaner fuel pressure test kit from an auto parts store. That's where you need to start.

 

Welcome to the forum. There are two fuel filters. One in the tank in front of the pump and one in the line on the frame by the transfer case. Are there any codes?