2001 Suburban Alarm/remote start

I am installing a Commando 5005 remote start/keyless entry/paging system.  Power door lock relays are built into the unit and it has 2 auxillary channels w/selectable output types.  Auto activation w/Aux 2 and auto disarm w/Aux 1. 

Several questions?

The main unit has a 3-pin door lock port: Blue (-) unlock output, red (+) trigger, green (-) lock output.  The 20-pin harness has door trigger input (+) and door trigger input (-).  In order for door locks to operate properly and open driver side alone, then all other doors will I still need to add a relay or relays.  If so, how?

The unit came with a 2-stage shock sensor and has a 4-pin port for it. It also came with an additional microwave sensor, however there is no port.  If I want to use both, will I have to run them from the same port using diodes? Or can one of the auxillary channels be used?  If so, which, and is wiring it this way difficult?

I have the 555L for the bypass and wanted to know if it matters whether it is hooked up between the ignition and starter defeat anit-grind relay?  I believe I'll be using some of the same wires. Not sure?

Lastly, the main harness has a tach input to connect to tach wire or fuel injector wire if tachless mode does not provide satisfactory operation.  Manual goes onto say that tachless mode is not compatible w/all vehicles or in severe temperatures.  Does any one know if tachless is compatible w/2001 Suburban or have any advice on this?

Sorry for all the questions and thanks for your assistance in advance.

your tach wire is at the PCM under the hood white wire

I don't believ this truck has a drivers door priority unlock wire.

your door trigger is NEG(-) theres a tan wire in the purple plug of the keyless module

Installed Commando 5005 in '01 Suburban.  Several issues. 

Remote start won't work. When I attempt to activate I get 4 chirps from alarm and can hear a relay under the dash.  Have armed output (-) 500mA alarm wire connected to relay for starter defeat and anit-grind protection.  Almost positive 555L wiring is correct.  Found yellow, ORANGE / black, and RED / white wire from Ignition to ignition harness above BCM. Connected yellow to yellow toward passlock key cylinder, BLACK / YELLOW to yellow toward BCM, and black passlock ground input to ORANGE / black ground reference wire.  Do I have the wrong ground reference wire? Is the 555L not learning the correct code? Crazy thing is, the vehicle starts with the key but not if the alarm is unarmed.  I have to arm the alarm to start and drive vehicle.  Upon stopping and turning off ignition, I have to unarm the alarm to get out or the alarm will sound.  Is this caused by improper wiring of factory disarm or factory rearm outputs from alarm?  I connected factory disarm output to light green (-) factory disarm wire in purple plug of BCM and factory rearm output to white alarm input wire at plug in convenience center.  I've read some literature indicating there is no factory rearm wire as it is controlled by the door locks.

When activating alarm door locks do not lock/unlock. Alarm has internal relays for door locks w/dedicated 3 pin door lock connector.  As driver priority unlocking not important to me, hooked negative unlock output 500mA to light blue door lock wire at brown plug and neg. lock output 500mA to white unlock wire for a positive trigger setup.  I initially had it hooked up for negative trigger setup, but that didn't work either.  Alarm also has a passenger unlock output for connecting to a relay to unlock passenger doors when set up for driver priotity unlocking which I'm not using.  Alarm can be programmed for 1 or 2 pulse operation. Does this matter?

Dome light operates when unarming alarm and all 4 doors trigger alarm when armed as I diode isolated driver trigger (tan) and blue/white (-) at BCM, light blue plug, for all other doors.  However, opening rear door or window does not trigger alarm.  Is the rear door on a separate trigger which I did not see on any wiring charts? Anybody know which wire? 

Parking lights do not operate or flash when arming and unarming.   Hooked parking light output (+/-) relay wire to brown wire which showed +12V when the parking lights are on at light blue plug in BCM.  Should parking light relay be set to positive or negative polarity?

Sorry for all the detail, just didn't know what might be usefull to know.  Willing to work through it, just need some help.  Thanks

Confused.......

Thanks for the info found the Tach wire. Tried getting it all installed this weekend but not working properly. Parking ligths flash upon arming and unarming.  Siren works as well as valet switch.  However, doors won't lock or unlock.  Hooked up negative unlock ouput and negative lock output to white and light blue wires in brown plug at BCM.  Don't want driver priority unlocking so not using passanger unlock output from main unit.  I thought the units internal relays would be all needed so did not use external relays.  Alarm can be programmed for 1 or 2 pulse operation. Does this matter? 

Remote start won't work. When I attempt to activate I get 4 chirps from alarm and can hear a relay under the dash.  Have armed output (-) 500mA alarm wire connected to relay for starter defeat and anit-grind protection.  Almost positive 555L wiring is correct.  Found yellow, ORANGE / black, and RED / white wire from Ignition to ignition harness above BCM. Connected yellow to yellow toward passlock key cylinder, BLACK / YELLOW to yellow toward BCM, and black passlock ground input to ORANGE / black ground reference wire.  Do I have the wrong ground reference wire? Is the 555L not learning the correct code? Crazy thing is, the vehicle starts with the key but not if the alarm is unarmed.  I have to arm the alarm to start and drive vehicle.  Upon stopping and turning off ignition, I have to unarm the alarm to get out or the alarm will sound.  Is this caused by improper wiring of factory disarm or factory rearm outputs from alarm?  I connected factory disarm output to light green (-) factory disarm wire in purple plug of BCM and factory rearm output to white alarm input wire at plug in convenience center.  I've read some literature indicating there is no factory rearm wire as it is controlled by the door locks.

Dome light operates when unarming alarm and all 4 doors trigger alarm when armed as I diode isolated driver trigger (tan) and blue/white (-) at BCM, light blue plug, for all other doors.  However, opening rear door or window does not trigger alarm.  Is the rear door on a separate trigger which I did not see on any wiring charts? Anybody know which wire? 

Sorry for all the detail, just didn't know what might be usefull to know.  Willing to work through it, just need some help.  Thanks

Confused.......

Might sound dumb, but R U sure the YELLOW wire from555L is going to cut half of Yellow wire that goes to Ignition Switch?.... & BLACK / YELLOW is going to other half of cut Yellow wire that goes to BCM? 

Should be POSITIVE Pulse for Lock / Unlock

<<<<  Parking lights do not operate or flash when arming and unarming.   Hooked parking light output (+/-) relay wire to brown wire which showed +12V when the parking lights are on at light blue plug in BCM.  Should parking light relay be set to positive or negative polarity   >>>>

POSITIVE output to Parking Lights

<<<<<<< I have to arm the alarm to start and drive vehicle.>>>>>>>>>

R U sure the wire U R using for the "Status Input" (Blue/Black) on 555L is the correct wire for Remote Start or is this a Negative Output from your RS only when ARMED??

Can anybody tell me if door locks in 2001 Chevy Suburban are a 5 wire positive pulse setup?  Tech help indicated I should wire them for reverse polarity, but it didn't work?