2002 chevy van
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=6634
Printed Date: September 10, 2025 at 4:24 PM
Topic: 2002 chevy van
Posted By: jimmythegreat1
Subject: 2002 chevy van
Date Posted: December 13, 2002 at 9:36 AM
Hey guys, and gals if any. I am doing a prestige 785 in an astro van full size, custom I will be doing the remote start also the van already has keyless entry can I tap into these somehow? let me know will ya. also another diagram would be nice I also will be using the 55L for the pass lock, question how do I know that the vehicle has the pass lock the key looks normal with no chip in it.
Replies:
Posted By: jimmythegreat1
Date Posted: December 13, 2002 at 9:58 AM
The lady wants the drivers door to unlock when i hit unlock but the other doors to open with like a 2cond option button also the rear door to unlock seperate also.
Posted By: 10nesne1
Date Posted: December 13, 2002 at 10:45 AM
Chevrolet | Astro Van | 1996-2002 |
Remote Starter Wiring Colors and Notes | Function | | | Vehicle Color | Location | Start: | | | YELLOW | IGNITION SWITCH HARNESS ** | Ignition #1: | | | PINK | IGNITION SWITCH HARNESS | Ignition #2: | | | WHITE | IGNITION SWITCH HARNESS | Ignition #3: | | | N/A | IGNITION SWITCH HARNESS | Accessory: | | | ORANGE | IGNITION SWITCH HARNESS | Brake Light: | | | WHITE (+) | AT SWITCH ABOVE BRAKE PEDAL | Tach Signal: | | | WHITE | AT IGNITION COIL * | Parking Lights: | | | BROWN (+) | AT HEADLIGHT SWITCH | Headlights: | | | YELLOW (+) | AT HEADLIGHT SWITCH | OEM Alarm Disarm: | | | N/A | IN SCHEMATICS | OEM Alarm Arm: | | | N/A | NO OEM ALARM PRESENT | Diesel Glow Plug: | | | | | Clutch Bypass Wire: | | | | | Notes: | | * Ignition Coil Located On Top Of Engine Behind Generator.** 1998+ Vehicles Are Equipped With GM's PASSLOCK II Anti-Theft System; See Note #113 - Bypassing GM's PASSLOCK II Passive Theft System Diagram. |
Chevrolet | Astro Van | 1996-2002 |
Alarm and Keyless Entry Wiring Colors and Notes | Function | | | Vehicle Color | Location | Constant +12 Volts: | | | RED (2) | IGNITION SWITCH HARNESS | Starter Kill: | | | YELLOW | IGNITION SWITCH HARNESS ** | Ignition +12 Volts: | | | PINK | IGNITION SWITCH HARNESS | Dome Lights/Superv: | | | PURPLE (-) | AT ANY PIN SWITCH **** | OEM Horn: | | | BLACK (-) | STEERING COLUMN HARNESS | Power Lock: | | | L BLUE | DRIVER'S KICK PANEL***** | Power Unlock: | | | WHITE | DRIVER'S KICK PANEL***** | Trunk Release: | | | L GREEN (-) | AT REAR WINDOW RELEASE SWITCH | Alarm Input Wire: | | | PURPLE (-) | AT ANY PIN SWITCH **** | Notes: | | **** WHITE (-) At Courtesy Light Can Also Be Used For Door Trigger.***** See Note #202 - Positive Pulse Door Lock Diagram. |
The driver's door unlock first, you will have to cut the driver door motor unlock wire and hook up a relay to it. Then the connect the door lock and unlock wire from the switch to the alarm system with positive switching. Have fun
Posted By: jimmythegreat1
Date Posted: December 13, 2002 at 2:15 PM
I really need to know how to hook up the door locks using a 785 prestige alarm people can ya help... The Van has Keyless entry and you must hit the unlock twice to open all of the doors once for the drivers door are there relays and were and hell how do i hook into them?
Posted By: Velocity Motors
Date Posted: December 13, 2002 at 4:58 PM
- The RED unlock wire goes to the Driver's MOTOR wire ( TAN at the driver's kick panel ) and this connection is a + trigger .
- Now the second unlock wire from the 785 RED / BLACK go to the WHITE wire in the driver's kick panel .
- The lock on the 785 GREEN goes to the LIGHT BLUE wire on the van.
- Check this link out https://www.velocitymotorsport.com/install_notes/Converting_Outputs.jpg and use the NEGATIVE------>POSITIVE OUTPUT diagram.
------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: dcash18
Date Posted: December 13, 2002 at 5:39 PM
There is not a chip in the key. This car uses a resistance type bypass. The 555L will work.
Posted By: jimmythegreat1
Date Posted: December 16, 2002 at 9:32 AM
Jeff were are these wires located at and do I need relays? or does the 785 handle this for me?
Posted By: Velocity Motors
Date Posted: December 16, 2002 at 12:04 PM
All these wires can be found at the driver's kick panel. You will need a relay for the RED unlock wire so you can convert the current from a (-) to a (+) in order to actuate the priority door lock.
-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: jimmythegreat1
Date Posted: December 16, 2002 at 12:15 PM
So Jeff you are saying this is sorta like a toyota or a nissan the groung thrown by the alarm will lock and unlock the doors?
Posted By: jimmythegreat1
Date Posted: December 16, 2002 at 12:22 PM
oops ground not groung
Posted By: Velocity Motors
Date Posted: December 16, 2002 at 12:23 PM
Not like the Imports, but the 785 has alternating polarity door locks so that it can support both a (-) and a (+) door lock system. The driver priority system from the 785 is only a (-) trigger type, but the Astro Van requires a (+) trigger to actuate the driver door only, so you need a relay to convert the 1 wire, but no other relays are necessary for the other doors because the unit will take care of that for you.
-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: jimmythegreat1
Date Posted: December 16, 2002 at 12:34 PM
The more I use this alarm the more I like it it seems to making the installs easier every year. is there any programing I will need to do or is it self sensing? dont wanna send a - when I need a + . sorry to sound so much like an rookie but when I quit last time I was using the 750 and most of the cars the people didnt want all of the extras so I am really rusty, that and it is a pain in the butt, installing with a screw driver and pliers because all of my good stuff was stolen.
Posted By: Velocity Motors
Date Posted: December 16, 2002 at 12:41 PM
OUCH !! Installing with a screwdriver : ) The diagram tells you what wire to use if it's a (+) or a (-) polarity wire. All you need to do is alternate the wire between the lock and unlock for either polarity. Check out the wiring diagram and check out the lock plug and you'll see what I mean.
-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: jimmythegreat1
Date Posted: December 16, 2002 at 12:57 PM
Yeah sucks I also am using a multi meter instead of my test light , I know it is suposed to be better but I really enjoyed those damn holes I poked in my fingers...hehehe.
Posted By: jimmythegreat1
Date Posted: December 16, 2002 at 4:08 PM
Hey Jeff, I got another problem... the red from the 785 unlock stays 12 v+ all the time I got the group locks and group unlocks but the unlock for the driver only, is not working? any ideas? When I unlock with the keyless entry the unlock wire hits but the alarm seems to be backwards on this one wire help if ya can
Posted By: Velocity Motors
Date Posted: December 17, 2002 at 1:46 AM
This is what it says in the manual: 3 Pin Door Lock/Unlock Harness: (White Connector) The Red and Green wires will provide either a pulsed ground output to the factory door lock control relay, or a pulsed + 12 volt output to the factory door lock control relay. In either case, the maximum current draw through these outputs must not exceed 300mA. The Red w/Black trace wire will provide a pulsed ground only, and will only provide an output when the unlock button of the transmitter is pressed a second time after a first unlock command was issued. This is used for second step unlock or all doors unlock in a two step circuit. In this arrangement, Red is used to control the drivers door unlock relay, and the RED / Black will be used to control unlock of all other doors. You will probably need to program the wire for priority door unlock . ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: jimmythegreat1
Date Posted: December 17, 2002 at 2:53 PM
I need some assistance here in the next 30 minutes if possible this damn van is blowing my mind help. ok here is the situation I have an aps 785 from prestige the red wire from the alarm for unlock is 12+ and when I hir the button it goes to 0V I am trying to hook up a drivers unlock in a 2002 chevy van astro full size i have the doors locking wiht the green wire and when I hit the unlock nothing but I do have were it will unlock all when unlock/disarm is hit twice. just cant seem to get the damn drivers door to unlock by itself, this is getting hard because she is getting pissed at me for not finishing yet.
Posted By: Velocity Motors
Date Posted: December 17, 2002 at 3:57 PM
You need to attach the single pulse for the priority door lock to the unlock MOTOR wire of the driver's door. This will require a (+) pulse to actuate just the driver's door. Find this MOTOR wire TAN at the driver's kick panel and test it before attaching anything to it. After you have verified that this is the target wire, you must ensure that the RED wire is outputing a (+) pulsed signal. If it is not, then you must use a relay to convert the polarity.
-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: jimmythegreat1
Date Posted: December 17, 2002 at 4:27 PM
Jeff I have tryed that but when I hook up to the relay the wire goes like dead and reads 0V really has me confussed
Posted By: Velocity Motors
Date Posted: December 18, 2002 at 12:58 AM
Does this wire have to be programmed for Priority door lock output ? ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: jimmythegreat1
Date Posted: December 18, 2002 at 7:54 AM
I see nowere in th einstalation manual to program the wire to be a priority unlock output
Posted By: Velocity Motors
Date Posted: December 18, 2002 at 9:33 AM
Tell me what the wire tested ( RED one ) when you press the button once and also what you soldered to what pin on the relay. I will verify this whenyou post your response. ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: jimmythegreat1
Date Posted: December 19, 2002 at 12:57 PM
Well come to find out from audiovox that the alarm is suposed to sit at neutral and throw a + or a - when switched this one I have is + at all times and go to neutral only when I hit the unlock button. has anyone seen this before.
Posted By: Velocity Motors
Date Posted: December 19, 2002 at 1:02 PM
Did Audiovox tell you that you may have a bad CPU then if yours is not alternating polarity ?
-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: jimmythegreat1
Date Posted: December 19, 2002 at 1:07 PM
yes I have to go swap the damn brain
Posted By: jimmythegreat1
Date Posted: December 19, 2002 at 1:10 PM
That sucks I have been killing myself for 3 days trining to get this the lady is a pain in the a** and only lets me work on it for a little bit at a time she always has to run erands and then more aarrrrrrrrrrrrggggggggggg!!!!!!!!!!!!!!!!!!!!! there I have vented
Posted By: Velocity Motors
Date Posted: December 20, 2002 at 1:27 AM
Welcome to the wonderful world of customer service  ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: jimmythegreat1
Date Posted: December 20, 2002 at 10:26 PM
Jeff please read my new subject. 2002 chevy express custom
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