GM ECM TBI Questions

[bruce plecan]

Hook a 12v trouble light at the pump, and when first key on, and 
initial crank should get a 2sec on pulse.  When the light is on
should hear pump run.
  No light, check fuse, and wiring Grk grn/wht pin A1 (24 pin smaller
     of 2 ECM connectors). 
  Light but no noise at all, pump dead or not grounded.
Run a fused wire to pump, and try to start engine, as you connect
wire (with key on) pump should run.  Oil Pump May be circulating
oil, but at less than 4 PSI, and not tripping fuel pump run points
in O/P sender.
  If engine runs, turn off disconnect jumper, and see if it restarts
     if yes fine, if no have sender, wiring problem.
  As always when working with fuel have extinguisher handy.
    HTH Bruce