DEI lists this info for your 00 Grand Am.
DIRECTWIRE™ WIRING INFORMATION - PONTIAC / GRAND AM / 2000 / Remote Start
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12volts red + ignition harness
Notes: Remove the radio, without unplugging it, to access the ignition harness.
Starter yellow + ignition harness
Notes: Remove the radio, without unplugging it, to access the ignition harness.
Second Starter
Ignition pink + ignition harness
Notes: Remove the radio, without unplugging it, to access the ignition harness.
Second Ignition dk. green + ignition harness
Notes: Remove the radio, without unplugging it, to access the ignition harness.
Third Ignition
Accessory orange + ignition harness
Notes: Remove the radio, without unplugging it, to access the ignition harness.
Second Accessory brown + ignition harness
Notes: Remove the radio, without unplugging it, to access the ignition harness.
Keysense
Power Lock white - black plug in dkp
Notes: Lock requires a negative trigger, and unlock requires a negative trigger through a 1,500 ohm resistor. Must use relays. Must close doors to lock with a single pulse.
Power Unlock same wire
Lock Motor gray drivers kick panel
Unlock Motor tan drivers kick panel
Parking Lights+ brown passenger kick or column
Parking Lights-
Hazards
Turn Signal(L)
Turn Signal(R)
Reverse Light
Door Trigger -
Notes: The lt. GREEN/ black is located in the drivers kick and catches only the drivers door. The lt. blue is located in the harness coming from the drivers running board going under the drivers seat and it catches all other doors. Use both door trigger wires and diode isolate each. On the 2 door the lt.blue is in the passenger kick.
Dome Supervision white - dash light or column
Trunk/Hatch Pin ORANGE / black - trunk light
Hood Pin
Trunk/Hatch Release BLACK/ white - trunk release switch
Power Sliding Door
Factory Alarm Arm
Factory Alarm Disarm
Disarm No Unlock
Tachometer white or PURPLE / wht ignition coil or ECM
Notes: The ECM is located under the left side of the dash to the left of the column.
Wait to start
Brake Wire lt. blue + at the switch
Parking Brake
Horn Trigger black - steering column
Memory Seat 1
Memory Seat 2
Memory Seat 3
Interface Module: Category:
Immobilizer Bypass Required:
Yes Type:
Passlock II
Part #: 1100F
Alternate Part1 #: 1100X
Alternate Part2 #: 556LW
Alternate Part3 #: 555LW
Alternate Part4 #: DesignTech 20402
Alternate Part5 #: DesignTech 29402
Notes: When using the 1100F or 1100X, a software change to 1100GM is needed.
Interface Module: Category:
Door Lock Interface Required:
Yes Type:
Multiplex
Part #: 456LW
Notes:
Interface Module: Category:
Combo Interface Required:
Yes Type:
Data Bus
Part #: 1700G
Alternate Part1 #: 457GW
Notes: Can use the 1700G or 457GW to bypass the Passlock II, but it will not control the door locks on this model year.
Smart Starter Kill Relays: Not Available
warning
This wiring information is being provided free of charge on an "as is" basis, without any representation or warranty. It is your responsibility to verify any circuit before interfacing with it using a digital multimeter.
Directed Electronics assumes no responsibility with regards to the accuracy or currency of this information. Proper installation in every case is and remains the responsibility of the installer. DEI assumes no liability or responsibility resulting from improper installation, even in reliance upon this information.
As you can see the 457 will work for bypassing the passlock, but will not do the door locks on your vehicle. You can grab the install manual
here.