Big request. First let me emphatically state that DEI is not my primary brand and I have never used a DB3
bypass module. Most of the info you need is in the DB3 w/GM5 firmware guide. Here is a link to that guide
for your truck :
https://directechs.blob.core.windows.net/ddt/403-GM5-4.10-ORI_2002-Chevrolet-Silverado_IG_EN_20181207.pdf
The rest of the info for the trucks wires can be found in this Pictorial :
https://www.the12volt.com/installbay/forum_posts.asp?tid=135786
Important info :
1. The DB3 install guide lists its supported features on Page 4. Basically it will take care of the trucks locks, alarm
and Passlock2 system. It will also supply a Tach signal and provide an output that will handle the RAP shutdown.
2. Your Viper 4105 is a R/S w/RKE system. It does not have any alarm functions. Additionally, it has a DBI data
port that will allow you to go D2D between the Viper 4105 and the DB3.
3. You should check to see if your truck has "one touch starting". That is where a momentary turn of the ignition
key to the START position and release will get the engine started under the ECM's control. This feature would
allow for Tachless Mode engine starting and no need for a Tach signal.
Viper 4105 with DB3 to 2002 Chevrolet Silverado with gas V8, PDL, Auto Trans & Factory Alarm.
Main 9 Pin
1 LIGHT GREEN/BLACK FACTORY ALARM DISARM................ Not used
2 GREEN/WHITE FACTORY REARM...................................... Not Used
3 YELLOW (+) IGNITION OUT (TO ALARM)............................. Not Used
4 WHITE/BLUE (-) ACTIVATION INPUT................................. Not Used
5 ORANGE (-) GROUND WHEN LOCKED...............… ................ Not Used
6 BROWN (-) HORN OUTPUT............................................. Black (-) BCM, brown plug, pin A9
7 RED/WHITE (-) TRUNK RELEASE OUTPUT.............................. Not Used
8 BLACK GROUND........................................................... Chassis Ground
9 WHITE (+/-) LIGHT FLASH...... set jumper to (+) ................ Brown (+) BCM, lt. blue plug, pin B6
R/S 5 Pin
1 BLACK/WHITE (-) NEUTRAL SAFETY SWITCH INPUT........... Chassis Ground
2 VIOLET/WHITE TACHOMETER INPUT WIRE............................ DB3, Red 12 Pin Plug, Pin 5 Violet/White
3 BROWN (+) BRAKE SWITCH SHUTDOWN WIRE...................... White (+) brake switch
4 GRAY (-) HOOD PINSWITCH SHUTDOWN WIRE....................... to kit supplied hood pin
5 BLUE/WHITE (-) 200mA 2ND STATUS/REAR DEFOG................ Not Used
4-pin satellite harness diagram
1 BLUE STATUS OUTPUT.............................. Not Used
2 ORANGE (-) ACCESSORY OUTPUT........ To Extra Relay Pin 85 for Brown ACC2 wire
3 PURPLE (-) STARTER OUTPUT............... Not Used
4 PINK (-) IGNITION OUTPUT...................... Not Used
Heavy gauge 6 Pin
1 RED (+) (30A) HIGH CURRENT 12V INPUT..................................... Red (+) ignition harness
2 PINK/WHITE (+) PROGRAMMED to IGN......................................... White (+) ignition harness
3 RED (+) (30A) HIGH CURRENT 12 INPUT........................................ Red/White (+) ignition harness
4 ORANGE (+) (30 AMP) OUTPUT TO ACC CIRCUIT....................... Orange (+) ignition harness
5 PURPLE (+) (30 AMP) OUTPUT TO STARTER CIRCUIT.............. Yellow (+) ignition harness ( also has DB3 Violet wire )
6 PINK (+) (30 AMP) OUTPUT TO IGNITION CIRCUIT.................... Pink (+) ignition harness ( also has DB3 Pink wire )
Door lock harness, 3-pin connector
1 BLUE (-) UNLOCK OUTPUT......... Not Used
2 EMPTY NOT USED
3 GREEN (-) LOCK OUTPUT............ Not Used
Follow the DB3 install guide for the remaining DB3 wires as follows :
Violet/Yellow J1850 goes to Violet wire at Pin 2 of OBD2 connector
Black/White RAP wire goes to BCM, purple plug, Tan wire at pin B4 ( Drivers door trigger )
Violet/Green and Violet/Brown get combined and connected to the Yellow Passlock2 wire
Tach, IGN and Starter wires already mentioned above
Think that about does it aside from the extra 30/40 amp SPDT relay for the trucks
Brown ACC2 wire. The relay wiring is listed in the Pictorial.
There will be some Viper programming required.
Follow the DB3 module to truck programming steps listed on Page 12.
Do the Viper Tach Learn.
Soldering is fun!