Hummer Forums by Elcova - Is there a factory alarm?

I found a facory Security Enhancement System. It is great. It adds shock/motion sensing without having to replacing the entire system. It is only about $25. Here is the Ebay listing for it:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5811...ReBay_Pr4_PcY_B IN_IT

Here is the wiring info for the BCM (Body Control Module)
DIRECTWIRE™ WIRING INFORMATION - HUMMER / H3 / 2006 / Remote Start

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12volts white/black to orange (10A) + ignition harness
Starter yel/blk (not for remote start) - PCM, blue plug, pin 48
Notes: The PCM (Powertrain Control Module) is on the passenger side firewall under the hood.

There is a white/blue (to white) wire and a white/yellow (to white/black) wire at the ignition harness, or the BCM, gray plug, pins A14 and A42, that performs the following: key sense, second ignition, starter, and Passlock resistance. Refer to DirectFax document 1603 for remote start interface information.

The BCM (Body Control Module) is in the passenger kick panel.
Second Starter N/A
Ignition white/green to dk. blue + ign harn or BCM, gray plug, pin B8
Notes: The BCM (Body Control Module) is in the passenger kick panel.
Second Ignition see starter wire notes
Third Ignition N/A
Accessory white/red to brown + ign harn or BCM, gray plug, pin B7
Notes: The BCM (Body Control Module) is in the passenger kick panel.
Second Accessory N/A
Keysense see starter wire notes
Power Lock lt. blue - either kick or BCM, blk plg, pin A11
Notes: The BCM (Body Control Module) is in the passenger kick panel.
Power Unlock dk. blue - either kick, door harness
Notes: To unlock just the driver door use white (-) at the BCM, black plug, pin A12.

The BCM (Body Control Module) is in the passenger kick panel.
Lock Motor gray 5wi door lock switch in driver door
Unlock Motor tan 5wi door lock switch in driver door
Parking Lights+ brown + driver kick or BCM, blk plg, pin A48
Notes: The BCM (Body Control Module) is in the passenger kick panel.
Parking Lights- brown/white - switch or BCM, gray plug, pin A7
Notes: The BCM (Body Control Module) is in the passenger kick panel.
Hazards white - switch or BCM, gray plug, pin A48
Notes: The BCM (Body Control Module) is in the passenger kick panel.
Turn Signal(L) lt. blue (F), yellow (R) + BCM, black plug, pins A3, B1
Notes: The BCM (Body Control Module) is in the passenger kick panel.
Turn Signal(R) dk. blue (F), dk. green (R) + BCM, black plug, pins A19, B2
Notes: The BCM (Body Control Module) is in the passenger kick panel.
Reverse Light lt. green + driver kick, harness to rear
Door Trigger see notes - BCM, black plug
Notes: The LF door is gray/black in pin A32, the RF door is lt. green/black in pin A38, the LR door is black/white in pin A39, and the RR door is lt. blue/black in pin A44. Use all four wires and diode isolate each.

The BCM (Body Control Module) is in the passenger kick panel.
Dome Supervision white - BCM, black plug, pin A46
Notes: The BCM (Body Control Module) is in the passenger kick panel.
Trunk/Hatch Pin common with RR door trigger
Hood Pin N/A
Trunk/Hatch Release N/A
Power Sliding Door N/A
Factory Alarm Arm
Factory Alarm Disarm
Disarm No Unlock with ignition and Passlock
Tachometer NOT pink or black ac any ignition coil or fuel injector
Wait to start N/A
Brake Wire lt. blue + switch or BCM, black plug, pin A37
Notes: The BCM (Body Control Module) is in the passenger kick panel.
Parking Brake lt. blue - switch or BCM, black plug, pin A31
Notes: The BCM (Body Control Module) is in the passenger kick panel.
Horn Trigger green to black - switch or BCM, gray plug, pin A25
Notes: The BCM (Body Control Module) is in the passenger kick panel.
Memory Seat 1 N/A
Memory Seat 2 N/A
Memory Seat 3 N/A
Interface Module: Category:
Immobilizer Bypass Required:
Yes Type:
Passlock
Part #: 556LW
Notes: See DirectFax document 1603 for wiring information.

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, 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.