i checked my code and came up 43, which translates to fuel supply system, does this neccessarily mean i need a new fuel pump, or could there be cheaper alternatives to attempt first? also could a O2 sensor somehow set that code off? thanx in advance

 

first off what year is your GSR?
what did you read the code with?
there is no code 43 on the code list in the servic manual.

 

i got a 94...i checked on a couple different websites