2002 grand am passlock

Passlock II is not a transponder type immobilizer, so no chip in the key.  I did a 2003 Grand AM a little while ago.  It was Passlock II.  The 2002 Grand AM should be the same.

You can check by pulling the radio and looking for the Passlock II wires in the ignition switch harness.  Here is a picture of the Passlock II wires:  http://www.bulldogsecurity.com/diagrams/Images.asp?ImageID=706&link=Bulldog

The Bulldog Security web site has the wire listing, instructions, and more pictures at:   http://www.bulldogsecurity.com/bdnew/vehiclewiringdiagrams.asp

It is a Ready Remote Model 24927 remote starter. It also has the door lock and unlock feature. I have read somewhere that i may need a special relay for the door lock to work also. something about it uses negative impulses to lock and unlock the doors. Of course also the gm passlock 2

Your 2002 Grand AM has a one wire door lock system.  You will need 2 relays and a 1500 ohm resistor.  Here is a diagram for it:  http://www.bulldogsecurity.com/diagrams/extrainfo/diagrams/15941_GRAND-AM_GRAND%20AM%201%20WIRE%20JBS%20UNITS.pdf   The top diagram should be correct for the 24927.

You could save youself some time and trouble and use an iDatalink bypass like the ADS DL with the ADS DL GM1 firmware.  It will do the Passlock II, the doors and the alarm (if factory equipped).

  Do you think that the idatalink would be the easiest way to go?  I have put in 2 remote starters before but they were both VERY easy.

The Grand AM should be pretty easy too.  The hardest part is getting good access to the ignition wires. 

The iDatalink does a lot with just it's 2 connections to the car.  On the 2003 I did, it even did the trunk release although it wasn't listed.   It will also supply your door/trunk status signal for the alarm and a Tach signal so you don't have to run another wire into the engine compartment.  Your main problem would be getting the iDatalink module with the correct firmware flashed on it.  The firmware download is free but the special USB cable costs about $60.

If you have a DMM and are good with soldering and relays, you can do everything with 4 relays and 2 resistors.  ( Unless you find a third ignition wire.)

Here is the relay and resistor method to bypass the Passlock II.   http://documents.audiovox.com/700054.pdf

WHY WHY spend $50 or $60 bucks on an I DATA LINK module if you only need a couple of relays, resistors or diodes on any car???

Good question.  Most cars use a transponder key based immobilizer system and with those cars a bypass module is the best solution.  Passlock II is resistive based and can be bypassed with relays and a resistor.  The main concerns there are the reliability of the relays and the many wire connections.  The accuracy of the resistor value and cold weather play a part in overall reliability too.

Time and ease of install are a concern for professional installers.  A do it yourselfer might be willing to spend 6 hours or more installing a remote start and then possibly some more time "working out the bugs".  A professional wants to do it in 3 hours and not have any "come backs".   Time is money.

On your car, the install without the idatalink module would include finding and verifing the cars Arm, DisArm, Lock, UnLock, Trunk, Tach and Passlock II wires (above and beyond the brake, parking light & necessary ignition wires).  Then you would need to use  your DMM and correctly test the car to determine the Passlock resistor value and wire up the two relays to bypass it.  Then a couple more relays wired up properly with the 1500 ohm resistor for the door locks.  Then neatly running all those wires / relays & the remote starts ignition wires and making good connections under the dash.

Or you could mate the remote start brain to the idatalink module at the work bench, then connect the remote starts ignition wires, brake & parking light wires and the bypasses one wire to the OBDII connector to the car. 

Bottom line, for a do it yourself type that is comfortable with a soldering iron and a DMM, spend the $20 dollars on the relays and a pack of resistors.  It will make for a rewarding weekend project and save an additional $30.

Arm, Disarm not applicable to this vehicle

I DATA LINK Modules cost 50-60 bucks wholesale.

radio shack retail resistor cost 99 cents average relay cost $1.25 so for less than 5 bucks

and about 5 minutes more install time accomplishes the same.

In todays economy Money is Money.

here is the diagram its super simple even for a professional installer!

http://documents.codesystems.com/700055.pdf

in addition you dont need any relays for the door locks only 2 diodes and 1 resistor

bottom line. if you dont install these often it gonna take you all day anyway

if you a pro it gonna take you about 3 hours either way you do it.