No power to Fuel Pump. NOT IGNITION SWITCH

Intermittently when I go to start my 1997 Blazer, The fuel pump does not kick on. I changed the ignition switch because I read in this forum that it causes this problem frequently. However I drove it to work the next day and when I went to leave, it would not start. (Fuel pump not kicking on) I towed it home with a dolly and as soon as I rolled it off the dolly, i tried it and it worked fine. My plan is to wait till its not working again and see if there is power getting to the fuel pump before i replace the fuel pump. (Relays are working)

Any other suggestions?

Intermittently when I go to start my 1997 Blazer, The fuel pump does not kick on. I changed the ignition switch because I read in this forum that it causes this problem frequently. However I drove it to work the next day and when I went to leave, it would not start. (Fuel pump not kicking on) I towed it home with a dolly and as soon as I rolled it off the dolly, i tried it and it worked fine. My plan is to wait till its not working again and see if there is power getting to the fuel pump before i replace the fuel pump. (Relays are working)

Any other suggestions?

Probably the fuel pump is on it's way out. That's exactly what mine did (a 1 year old Carter replacement pump-ended up buying a Delphi pump assembly).

Sometimes it worked, sometimes it didn't. Just for the heck of it, swap the pump relay with the A/C unit next to it so you can be sure that's not the cause.

A relay may operate, but not necessarily close the load contacts fully. If the pump relay contacts are pitted/damaged, it might not even matter if they DO close - the pump may not get power.

Before dropping the tank, I'd advise verifying that the pump has no power right at the connector in front of the tank. I'd also make sure the ground for the tank was intact. It would be a shame to go through the task of replacing a pump only to discover the new pump still doesn't work. There is a fuse in the circuit, and are at least three connectors.