Can't find fuel pump connector

[GoToGuy]

The turn signal/ brake, fuel pump, fuel level, inside left frame rail.

 

[MrOverCast]

The turn signal/ brake, fuel pump, fuel level, inside left frame rail.

What harness is that apart of?

 

[GoToGuy]

Do you have a truck now? Look where the fuel filter is located. Did you get the service manual pdf's in this forum, there free. You'll see it all the manuals. GM has no harness.