How Do you Turn Off the CEL Light

Hi,
2003 GXE
There was a low fuel pressure code and i have replaced the fuel pump.
The CEL light is still on....
What is the procedure for getting that lifht off?
Really don't want to go to Auto Zone. I'd rather do it myself.
Thanks in advance for the help.
Steve

i believe you need a scanner to reset

you need a scan tool. if you know anywhere a mac tools distributor is, you can buy a simple little tool thing for around 60 bucks that reads and clears codes. its mucho coolio.