we put in a new engine and are haveing problems with the fuel pump. the pump works. the pump primes when the ingnition is on but does not run when we try to start the car. the wirnign diagram in hayns in wrong for my car. i need to know which wire it is going to the pump that tells the pump to pump fuel while the car is running (pink black and gray). also were is the relay for the fuel pump to prim. we disconnected the fuel pump relay and it still primed.

 

Go to the link below. Find you model and wahla!
GMECM's