Why Did The Shop Do This? 2001 Tahoe, Viper 5706, DB3

2001 chevy tahoe 5706 viper Db3 bypass module shop took over installation since I didnt get any feedback on my original thread regarding the wiring schematic I had laid out hoping to get sum feed back after this pic of what the shop did to my tahoe and get to fix it. Quick run down they eliminated the Db3 added 3 relays use tape and butchered my wiring after I had solder, shrink wrapped, and tesa tape my harness.

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Mr.562

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Mr.562

I believe that this write up by kreg357 is the only thing close to my tahoe viper and module except that I run negative MH 5 connection. 2002 Silverado with Viper 5806 and DB-ALL2 flashed with 4.02 GM5 Ver 3.12.106a firmware.

Assumptions : Gasoline engine, factory door locks, going with D2D between Viper & DB-ALL2.
There is no need for the 451M door lock module, the DB-ALL2 will handle the locks and alarm via it's connection to the J1850
Data wire at the OBD2 connector.

          Pin Color          Description     Destination

MH   1 Red      (+)12VDC Constant Input      Red (+) @ ignition harness
MH   2 Black             (-) Chassis Ground      Chassis Ground
MH   3 Brown            (+) Siren Output       Viper siren
MH   4 WHITE/ Brown     Parking light isolation        Not Used
MH   5 White             Parking light output BCM Gray Connector, Brown wire, pin 6 (+)     * Set jumper to (+)
MH   6 Orange          (-)500mA Ground when armed        Not used

DL   1 Blue (-)500mA Unlock output            Not used - handled via D2D

DL   2 EMPTY
DL   3 Green (-)500mA Lock output Not used - handled via D2D

RS   1 NC

RS   2 RED / Black   (+) Fused 12V acc/start input          RED / White (+) @ ignition harness
RS   3 Pink/Black (+) Flex relay input 87a key side     Not used
RS   4 Pink/White (+) Ignition 2/flex relay output        White (+) @ ignition harness
RS   5 Red   (+) Fused 12V Ignition 1 Input      Red (+) @ ignition harness
RS   6 Green   (+) Starter Input (key side)       Yellow (+) @ ignition harness     cut wire
RS   7 Violet   (+)Start output (car side)           Yellow (+) @ ignition harness     cut wire
RS   8 Orange       (+) Accessory output          Orange (+) @ ignition harness
RS   9 RED / White (+) Fused 12V Ignition 2     RED / White (+) @ ignition harness
RS 10 Pink (+) Ignition 1 Input/output Pink (+) @ ignition harness

AST   1 Pink/White   (-) 200mA Ignition 2/flex Output           not used

AST   2 Blue/White   (-) 200mA 2nd Status/rear defog output          not used
AST   3 RED / White    (-) 200mA trunk release output not used
AST   4 BLACK / YELLOW   (-) 200mA dome light output              not used
AST   5 Dark Blue    (-) 200mA status output           Not used - handled via D2D
AST   6 WHITE/ Black   (-) 200mA AUX 3 output        not used
AST   7 WHITE/ Violet   (-) 200mA AUX 1 output        not used
AST   8 ORANGE / Black   (-) 200mA AUX 4 output      not used
AST   9 Gray (-) Hood pin input (NC or NO)             to kit supplied hood pin
AST   10 Blue (-) trunk pin/instant trigger input (NC or NO)      not used
AST   11 WHITE/ Blue   Activation Input        not used
AST   12 Violet/White   Tachometer input Not used - handled via D2D
AST   13 BLACK/ White   (-) neutral safety/parking brake input            Not used - handled via D2D ( E-Brake ? )
AST   14 GREEN/ Black   (-) 200mA Factory alarm disarm output       Not used - handled via D2D
AST   15 Green (-) Door input        Not used - handled via D2D
AST   16 BROWN / Black   (-) 200mA horn honk output optional ( already have Viper siren )
AST   17 Pink (-) 200mA Ignition 1 output     not used
AST   18 Violet (+) Door input           not used
AST   19 Violet/Black   (-) 200mA AUX 2 output      not used
AST   20 Brown (+) Brake shutdown input    White (+) @ brake pedal switch
AST   21 Violet / YELLOW   (-) 200mA starter output    not used
AST   22 Gray/Black   (-) Diesel wait to start input not used
AST   23 Orange (-) 200mA accessory output       to extra relay Pin 85 ( for Brown ACC2 wire )
AST   24 GREEN / WHITE   (-) 200mA factory alarm arm output Not used - handled via D2D

DB-ALL2

D2D harness to Viper

Blue 14 Pin Plug

Pin 2 Violet / YELLOW to OBD2 Pin 2 Violet

Red 12 Pin Plug

Pin 1 BLACK/ White to Tan (-) @ BCM, purple plug, pin B4
Pins 8 & 9 to Yellow Passlock2 wire at steering column harness

Black 10 Pin Plug

Pin 8 Violet to Viper     RS   Pin 7 thick Violet (+) Start output
Pin 9 Pink to Viper       RS   Pin 10 thick Pink (+) Ignition 1 Input/output

Extra relay ( 8617 ) for ACC2 :

Pin 85 to Viper    AST   Pin 23 Orange (-) 200mA accessory output
Pin 86 and 87 to Red (+) @ ignition harness through 25 amp fuse
Pin 30 to Brown ACC2 @ ignition harness
Pin 87a not used

The DB-ALL2 must be flashed with the above specified firmware. Here is a link to the install guide :

https://www.xpresskit.com/DocumentDownload.aspx?documentid=9294&productid=553&firmwareid=6501
Follow the Type 4 diagram / instructions. You will need an XKLoader2 cable to flash the DB-ALL2.

There will be some programming changes necessary for the Viper. Things like Transmission Type, Engine Checking,

etc.


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Mr.562

OMG. It's work like that that gives the 12 Volt industry a bad reputation.

First question. Does it work?
( the pre-question is why did you bring it to someone? I'm sorry you didn't get a reply from you original post.
   I don't use Directed products and after their recent purge, don't answer too many questions due to lack of
   current knowledge of their products. )

Even if your Tahoe has a Factory Alarm system, you really don't need a full featured bypass module like the
DB-ALLx series. Sure, they make things easier but a simple Passlock2 bypass module is all you need. And that
appears to be what the install shop did. They used the old school "Relay and Resistor" method to bypass the
Passlock2 during R/S. The other two relays are used convert the Vipers (-) Door Lock outputs to a (+) signal
that the Tahoe needs, one for Lock and the other for Unlock.

Don't know what to tell you. I would be very hesitant to bring it back to that shop. If it didn't work
properly, I would ask for a refund. If it works properly, I'd be tempted to clean up the install, getting
rid of the crimp connectors, soldering and heat shrinking everything, etc, making it neat and call it a day.
Remember that the removed curved metal plate has some unfinished edges on it, so make sure the harnesses are
well protected in that area.


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Soldering is fun!

I already had wired up using solder, heat shrink, and Tesa tape all that needed was the programming according to the flashes from the module it wasnt communicating and after reading that this modules dont take on the first try I assumed it needed to be reflashed with the proper software called around only shop that would reprogram it for me.
It locks and unlocks but it doesn't start the tahoe, cranks but doesnt engage. Relays have no resistors from what I see and no they was not payed since they decided to do that work without contacting me and advance they butchered wires that were solder and they left wires without no protection (bare wires).

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Mr.562

Check the instrument cluster to see if the "Security" light is on during R/S cranking.
That would indicate that the Passlock2 is not being bypassed and preventing fuel from
getting to the engine.

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Soldering is fun!

Can't see the wires all that well, but it looks like the Yellow Passlock2 wire has something
connected to it. Guess that the 3rd relay was for the Brown ACC2 wire. If that's the case,
you will need a bypass module for the Passlock2 being as the DB-ALL3 is removed. If you
trust the Viper alarm system to protect the Tahoe, you could do a permanent bypass on the
Passlock2 or get a Fortin Passlock SL2 or a Directed 556 LW bypass module.

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Soldering is fun!

When I use the key it starts up fine when I use the rs it just cranks three times and then everything and the cluster goes dark (no lights).

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Mr.562

Any "Security" light on the instrument cluster during R/S crank attempts?

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Soldering is fun!

Seems that they connected the orange from Rs to my brown ignition harness the black/white rap off to my passlock and no it doesnt show security it does show my battery when I start using the Rs.

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Mr.562

Does your Tahoe have the Factory Alarm?
What exact Viper model are you using?
Anything connected to the Tahoe's Yellow Passlock2 wire?

It might help if you listed all the actual connections.

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Soldering is fun!

Yes factory alarm
Viper 5706v
Passlock to db3 rap off output
I can try to look for all the connections but might take me a while since I have to go through the diagrams and harness to make sure since they extended wires using pieces and also clipped wires I had already ran

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Mr.562

"Passlock to db3 rap off output" ???   Thought the DB3 was removed.

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Soldering is fun!

The module was removed but they left all the harness attach including the one to the brake and obd 2. I think at this point I'm better off removing everything and starting all over again.

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Mr.562

If you do that, you should plan now on what type of Passlock2 bypass module to use.
As you already found out, going with any type of module that requires a special firmware
flash prior to use is a bad choice for DIY'ers. Too many hurdles to jump and issues to
get around. There are a few "full featured" modules available that are ready to go
right out of the box.   Of course these modules probably won't be able to handle the DBI
D2D comm so they would be hardwired between the Viper and the bypass module. If
you want to hardwire the door locks, etc, you could go with a basic Passlock2 module
as mentioned above.   It would appear that is what you currently have from the local
12 Volt installer. Anyway, let me know what bypass module you plan to go with and I
will either supply you with a wire chart or review the one you propose. (I did not find the
earlier post you mentioned with that info that no one responded to.)

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Soldering is fun!

If you start with the key and then engage the RS does the vehicle remain running when you turn the key off?

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Steve G

When I start it with the key then use the rs the motor turns as if it was starting but also the starter keeps cranking as if it hasn't started.

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Mr.562

Please verify which color wire in the vehicle is connected to the Solid Pink Ignition 1 input/output wire from the Viper. I can not tell from the photo if it is connected to the vehicle Pink or White.

Are you using tach or virtual? Has that been set properly in Menu 3?

Is this an automatic transmission? I see a labeled wire for e-brake and I’m wondering what it is for? If automatic was this properly changed from default manual to automatic in Menu 3?

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Steve G

Pink to pink ign.

Virtual tech I dont see no actual wire to either my cluster or ECM.

The vechile is automatic

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Mr.562

Is there any specific bypass modules you recommend besides the db3 from what I'm gathering calling this shops today that's what they are selling for the viper alarm. I will continue to call see if I can find another option.

As off right now I will run the viper as alarm and the db3 as the bypass module hopefully this reflash I got done works and it all goes well apparently my local shops dont carry any other bypass or they just really wanna push the db3 out. So with no luck for other options I must proceed to get my vechile up and running this is how I presume the wiring should go.

Mh.
Red 12v. =red ignition
Black =ground
Brown =viper siren
White/brown =?
White =brown bcm light blue plug pin b6
Orange =?
Dl.
Blue =n/a
Empty
Green =n/a
Aux.
Pink/white =n/a
Blue/white =n/a
Red/white =n/a
Black/yellow =n/a
Dark blue =n/a
White/black =n/a
White/violet =n/a
Orange/black =n/a
Gray =hood pin
Blue =n/a
White/blue =n/a
Violet/white =n/a
Black/white =n/a
Green/black =n/a
Green =n/a
Brown/black =black bcm brown plug pin a9
Pink =n/a
Violet =n/a
Violet/black =n/a
Brown =white wire switch above pedal
Violet/yellow =n/a
Gray/black =n/a
Orange =n/a
Green/white =n/a
Db3.
Violet/yellow =violet pin 2 obd
Black/white =tan bcm purple plug pin B4
Violet/white =white wire behind cluster ecm
Violet/green, violet/brown = yellow passlock
Violet =violet rs pin 9
Pink =pink rs pin 10

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Mr.562

Still cleaning up wiring solder and shrink wrapped working with what I got colors dont match but gauge size does.

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Mr.562

As far as bypass modules go, the DB series is the designed to go with the Viper.
That being said, there are other options out there.

First a few questions need to be answered.

Do you want a full featured bypass module like the DB3 that does more than the Passklock2 bypass function?

Do you want the bypass module to be capable of D2D communications with the Viper?

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Soldering is fun!

Kreg357 in honesty I have no idea what the bypasses are capable of doing. My idea was to get a alarm that would be able to unlock,lock and start my truck for those cold early mornings maybe later on have window roll down and up option. Since my factory alarm controls broke and I assume it would be better to upgrade the factory the alarm.

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Mr.562

Knowing everything possible for your project is very important. There are no plug-n-play
options for your Tahoe out there. Knowledge is power. And as you found out, good and
knowledgeable installers are worth their weight in gold.

For your truck there are two types of bypass modules. The basic bypass module will only handle
the Passlock2 engine immobilizer system. The second class of bypass modules ( full featured ), will
handle the Passlock2 plus perform other functions like handle the trucks door locks, alarm system,
provide a Tach signal and the front doors status signal. According to the DB3 install guide, it can
perform all those extra functions. Directed is the only company with a full featured bypass module
for that year Tahoe. All other manufacturers produce basic Passlock2 bypass modules for that year.
Some of these can also provide a Tach signal. What this means is that with a Passlock2 only bypass
module, the Viper will have to directly interface the Tahoe to perform certain functions ( locks and alarms )
and obtain various necessary signals ( Brake, Door Status, etc ).    Making all the vehicle connections
isn't too bad. Here is a link to a Pictorial to your class vehicle with most of the necessary wires
shown :       https://www.the12volt.com/installbay/forum_posts.asp?tid=135786        The only wires
missing are the door pin status wires for the Vipers alarm system.

You have the ability to solder and make good wire connections. You will also need a Digital Multi
Meter and the ability to use it. A bad connection can kill the BCM, ECM, door lock switches, etc.
The Pictorial provides an example of the R/S, relays, bypass module inter-connections. While you are
using a different R/S system, you can apply that info to your chosen system.

Personally, for your Tahoe, I would use a Directed 451M door lock module and a Fortin INT-SL+
for the Passlock2 bypass module. You would have to hardwire the INT-SL+ to the Viper, but that
is only 4 wire connections.

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Soldering is fun!

After the cleaning of the harness I have figure out that the reason they didnt use the db3 was that they yanked on the harness so bad that the main obd wire pin was pulled out of it. I dont mind taking my time soldering and testing but after reading on the db3 and what I went through I will look into the components you have suggested and avoid any other problems.

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Mr.562

I will have to order them and maybe finalize installation next week on my time off thanks for the info kreg357

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Mr.562

The Fortin PASSLOCK-SL2. v.2 is slightly different in the way it handles the Tahoes
Passlock2 system from the INT-SL+ but less expensive. A couple more wires to connect
but it should work well. The PASSLOCK-SL2. v.2 does its' job directly on the Passlock2
wires via resistance while the INT-SL+ does it through Data at the J1850 wire.

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Soldering is fun!

Seems like I found the correct one does time.

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Mr.562

Viper 5706 db3 was reflash n repin I solder all the wires electrical tape and tesa tape to finish up the job doors lock n unlock rs works only thing I didnt do was add the relay.. any reason for the relay besides using it as a kill switch?

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Mr.562

Looks much better!

I believe the two relays are for the (-) to (+) conversion on the lock wires.
The other relay might have been for the Brown ACC2 wire. I'm pretty sure that
the Viper has an internal relay for Starter Kill and Anti-Grind. It uses the
thick Green and Violet wires to accomplish this and a cut on the trucks Yellow
Starter wire.

If your lock and unlock work OK from the Viper, you don't really need the
Directed 451M module.

Not sure if a Fortin INT-SL-PL is the same as the Fortin INT-SL+ bypass module.

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Soldering is fun!

This is the write up I followed to install the viper and db3 of course I rechecked with my wiring diagrams and it's the same the relay I was asking about was the 8617 at the bottom of this write up. Btw thanks kreg 357 you been a great help.

2002 Silverado with Viper 5806 and DB-ALL2 flashed with 4.02 GM5 Ver 3.12.106a firmware.

Assumptions : Gasoline engine, factory door locks, going with D2D between Viper & DB-ALL2.

There is no need for the 451M door lock module, the DB-ALL2 will handle the locks and alarm via it's connection to the J1850

Data wire at the OBD2 connector.

          Pin Color          Description     Destination

MH   1 Red      (+)12VDC Constant Input      Red  (+)  @ ignition harness

MH   2 Black             (-) Chassis Ground      Chassis Ground

MH   3 Brown            (+) Siren Output       Viper siren

MH   4 WHITE/ Brown     Parking light isolation        Not Used

MH   5 White             Parking light output BCM Gray Connector, Brown wire, pin 6 (+)     * Set jumper to (+)

MH   6 Orange          (-)500mA Ground when armed         Not used

DL   1 Blue (-)500mA Unlock output            Not used - handled via D2D

DL   2 EMPTY 

DL   3 Green (-)500mA Lock output Not used - handled via D2D

RS   1 NC 

RS   2 RED / Black   (+) Fused 12V acc/start input          RED / White  (+) @ ignition harness

RS   3 Pink/Black  (+) Flex relay input 87a key side     Not used

RS   4 Pink/White  (+) Ignition 2/flex relay output         White (+) @ ignition harness

RS   5 Red   (+) Fused 12V Ignition 1 Input      Red  (+) @ ignition harness

RS   6 Green   (+) Starter Input (key side)       Yellow (+) @ ignition harness     cut wire

RS   7 Violet   (+)Start output (car side)           Yellow (+) @ ignition harness     cut wire

RS   8 Orange       (+) Accessory output          Orange (+) @ ignition harness

RS   9 RED / White  (+) Fused 12V Ignition 2     RED / White  (+) @ ignition harness

RS  10 Pink  (+) Ignition 1 Input/output  Pink (+) @ ignition harness

AST   1 Pink/White   (-) 200mA Ignition 2/flex Output           not used

AST   2 Blue/White   (-) 200mA 2nd Status/rear defog output          not used

AST   3 RED / White    (-) 200mA trunk release output not used

AST   4 BLACK / YELLOW   (-) 200mA dome light output              not used

AST   5 Dark Blue    (-) 200mA status output           Not used - handled via D2D

AST   6 WHITE/ Black   (-) 200mA AUX 3 output        not used

AST   7 WHITE/ Violet   (-) 200mA AUX 1 output        not used

AST   8 ORANGE / Black   (-) 200mA AUX 4 output      not used

AST   9 Gray (-) Hood pin input (NC or NO)             to kit supplied hood pin

AST   10 Blue (-) trunk pin/instant trigger input (NC or NO)      not used

AST   11 WHITE/ Blue   Activation Input         not used

AST   12 Violet/White   Tachometer input                 Not used - handled via D2D

AST   13 BLACK/ White   (-) neutral safety/parking brake input            Not used - handled via D2D ( E-Brake ? )

AST   14 GREEN/ Black   (-) 200mA Factory alarm disarm output       Not used - handled via D2D

AST   15 Green (-) Door input        Not used - handled via D2D

AST   16 BROWN / Black   (-) 200mA horn honk output optional ( already have Viper siren )

AST   17 Pink (-) 200mA Ignition 1 output     not used

AST   18 Violet (+) Door input           not used

AST   19 Violet/Black   (-) 200mA AUX 2 output      not used

AST   20 Brown (+) Brake shutdown input    White (+)  @ brake pedal switch

AST   21 Violet / YELLOW   (-) 200mA starter output    not used

AST   22 Gray/Black   (-) Diesel wait to start input not used

AST   23 Orange (-) 200mA accessory output       to extra relay Pin 85 ( for Brown ACC2 wire )

AST   24 GREEN / WHITE   (-) 200mA factory alarm arm output Not used - handled via D2D

DB-ALL2

D2D harness to Viper

Blue 14 Pin Plug

Pin 2 Violet / YELLOW to OBD2 Pin 2 Violet

Red 12 Pin Plug

Pin 1 BLACK/ White to Tan (-)  @ BCM, purple plug, pin B4

Pins 8 & 9 to Yellow Passlock2 wire at steering column harness

Black 10 Pin Plug

Pin 8 Violet to Viper     RS   Pin 7  thick Violet (+) Start output

Pin 9 Pink to Viper       RS   Pin 10  thick Pink  (+) Ignition 1 Input/output 

Extra relay ( 8617 ) for ACC2 :

Pin 85 to Viper    AST   Pin 23 Orange (-) 200mA accessory output

Pin 86 and 87 to Red  (+) @ ignition harness through 25 amp fuse

Pin 30 to Brown ACC2 @ ignition harness

Pin 87a not used

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Mr.562

Please remember that that Pictorial and write-up was specific to a R/S system and the
bypass module used. While there are many similarities, there are significant differences.
4806 with DB2 vs 5706 with Fortin INT-SL+

Correct me if I'm wrong but beside using a Viper 5706 instead of a Viper 4806, you are
going to use a basic Passlock2 only bypass module instead of a full featured bypass
module.

The 5706 is an alarm system and will need to monitor the trucks doors and hood to
provide the alarm functions. The DB2 was capable of handling the trucks factory
alarm system. For your install you will have to hardwire the Viper Door Trigger
inputs directly to the trucks door pins.

If your truck has a factory alarm system additional wires must be run to control
the factory alarm.   

Lastly, the DB2 was directly handling the door locks while your install will use
relays and direct connections to the (+) lock / unlock wires. I believe you have
that aspect covered but I'm not positive.

I really don't have a good grasp on where you are at right now to be sure how to
advise you. My first thought would be for you to provide the actual wire connections
made using the real Viper 5706 plugs and wire colors.

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Soldering is fun!

Sorry about the confusion kreg357 my current wiring for the 5706 goes as follows:
MH 1 Red to ignition red
MH 2 black to chassis ground
MH 3 brown to viper siren
MH 4 white/brown not used
MH 5 white to brown wire at BCM also went on +
MH 6 orange not used

DL 1 blue not used
DL 2 empty
DL 3 green not used

RS 1 empty
RS 2 red/black to red/white ignition
RS 3 pink/black not used
RS 4 pink/white to white ignition
RS 5 red to red ignition
RS 6 green to yellow ignition
RS 7 violet to yellow ignition
RS 8 orange to orange ignition
RS 9 red/white to red white ignition
RS 10 pink to pink ignition

AST 1 pink/white not used
AST 2 blue/ white not used
AST 3 red/white not used
AST 4 black/yellow not used
AST 5 dark blue not used
AST 6 whute/black not used
AST 7 white/violet not used
AST 8 orange/black not used
AST 9 gray to hood pin
AST 10 blue not used
AST 11 white/blue not used
AST 12 violet/white not used
AST 13 black/white to white brake pedal
AST 14 green/black not used
AST 15 green not used
AST 16 brown/black to black wire at bcm
AST 17 pink not used
AST 18 violet not used
AST 19 violet/black not used
AST 20 brown to white brake pedal
AST 21 violet/yellow not use
AST 22 gray/black not used
AST 23 orange not used
AST 24 green/white not used

DB3 d2d
Blue plug violet/yellow to violet obd

Red plug black/white to tan wire bcm
Violet/green to yellow passlock
Violet/brown to yellow passlock

Black plug violet to RS violet wire
Pink to RS pink ignition

You have to connect the db3 as follows black plug first red plug second blue plug third and d2d last

So now my question is do I need a acc2 relay?

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Mr.562

First, AST 13 goes to Chassis Ground for an Auto Trans vehicle that passes the NSS safety tests.
I would also hardwire AST 12 to the DB3's Tach Output as shown in their diagram.

Second, the DB3 should be flashed with the 403.GM5 Ver 4.10 firmware.

Make sure that the DB3 vehicle programming procedure completes successfully and follows the guide exactly.

Set the Viper to Auto Trans and Tach Mode. Perform a Tach Learn. Verify that the jumper
fuse is set to (+) Parking Light Output.

While I believe that the ACC2 Brown wire is not mandatory for your vehicle, I always add that
relay and power all the ignition wires just like a normal key startup would.

Again, I've never used a DB3. The modules I use for that vehicle only do the
Passlock2 bypass function. There is a list of the functions supported by the DB3 om
Page 4 of the install guide. I would definitely check out everything after the
install, especially the rear door triggers for the 5706 alarm system.

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Soldering is fun!