2000 pont, montana keyless upgrade

I don't know where it is, but I hope this wire diagram will be helpful to you. DIRECTWIRE™ WIRING INFORMATION - PONTIAC / MONTANA / 2000 / Keyless Entry [PRINT THIS PAGE] 12volts red & RED / white   +   ignition harness Starter yellow   +   ignition harness Ignition pink   +   ignition harness Power Lock RED / black   -   BCM, to right of glove box Notes: The door lock wires will only meter when turning the key in either door key cylinder. Also have to program the door lock pulse duration for 3.5 seconds to unlock the doors. On vehicles without the factory alarm, use lt. blue for lock and white for unlock. Find the wires in either kick panel. Power Unlock ORANGE / black   -   BCM, to right of glove box Notes: The door lock wires will only meter when turning the key in either door key cylinder. Also have to program the door lock pulse duration for 3.5 seconds to unlock the doors. On vehicles without the factory alarm, use lt. blue for lock and white for unlock. Find the wires in either kick panel. Lock Motor gray      BCM, to right of glove box Unlock Motor tan      BCM, to right of glove box Parking Lights+ brown      drivers kick or light switch Parking Lights- BROWN / white      BCM, to right of glove box Hazards           Turn Signal(L)           Turn Signal(R)           Door Trigger gray/black   -   BCM, to right of glove box Notes: To avoid the domelight delay use tan for the drivers door, blue for the passenger door and the liftgate, and orange for the sliding doors. All wires are negative trigger, located at the BCM and all need to be diode isolated from eachother. Dome Supervision use door trigger        Trunk/Hatch Release           Power Sliding Door lt. blue   -   pass. kick, harness to rear Factory Alarm Arm arms w/ lock        Factory Alarm Disarm disarms w/ unlock        Disarm No Unlock           Notes: To disarm the factory alarm without unlocking the doors, use a 0.8 second pulse on the unlock wire. Horn Trigger black   -   BCM, to right of glove box Memory Seat 1           Memory Seat 2           Memory Seat 3           Immobilizer Bypass Module: Required: Yes Type: Passkey 3 Part #: 457G, 555G, 556U, or 555U Notes: When using the 555U, use the lt. green (-) key sense wire at the ignition harness to interrupt the blue wire on the 555U so that when the key is inserted to do take over the vehicle does not see two transponders at the same time. Refer to DirectFax document 1079 for wiring information.        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, Inc. 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. Be careful whose advice you buy, but be patient with those who supply it.

The keyless module as I know it, is inside the BCM so no it will not plug in.  Someone correct me if I'm wrong.