Basically, the remote start / keyless entry install is the same as others you have done. The only difference is the additional wiring for the bypass module for the vehicles Passlock2 system. It's just a few extra wires to connect. The Viper controls the bypass module and the bypass module does what it has to do when commanded by the Viper. Don't over think the install. After making the connections and programming the modules everything happens automatically.
On a 2001 Chevrolet Suburban, the bypass modules mentioned above only perform the Passlock2 bypass function.
There are some bypass modules from XpressKit, like the DB-ALL, that will do other functions. I am not a DB-ALL user
and am not familiar with that application. IMHO, the truck is very easy to do, with all the necessary wires available right
under the steering column and BCM, that a less expensive basic Passlock2 bypass module is all I use. There are two
general type of Passlock2 bypass modules. The first, older type makes direct wire connections to the vehicles Passlock2
wires. The newer Data style bypass modules ( mentioned previously ) only require one connection to the Violet wire
at Pin 2 of the OBD2 connector. With either type of bypass module, the vehicles Passlock2 immobilizer system will still
provide theft protection and the vehicle will still function / start normally with a key. ( Remember that the actual resistance
is inside the ignition cylinder, not on the key like the VATS system ).
Lets assume an install using the Viper 5101 and a Fortin INT-SL+ bypass module.
The Viper 5101 is a remote start with keyless entry system. It uses 5 button, one way remotes. With a basic install you
will control the vehicles power door locks, Factory alarm and be able to remote start the engine.
The Viper 5101 will be directly connected to the vehicles BCM wires to control the Parking Lights, horn and Factory alarm.
The Viper 5101 will be directly connected to the vehicles Tach wire at the back of the instrument panel and the Brake wire
at the pedal switch connector.
The Viper 5101 will control the power door locks through a DEI 451M door lock module that is connected to the correct
wires at the BCM.
The Viper 5101 will be connected to the vehicles thick ignition wires at the steering column to allow a remote start.
The Viper will control the Fortin INT-SL+ bypass module ( using the Dark Blue (-) Status Output wire ) to bypass the
Passlock2 immobilizer system during a remote start.
The Fortin INT-SL+ will be connected to the vehicles Purple J1850 Data wire at Pin 2 of the OBD2 connector to perform
the Passlock2 bypass function.
The Fortin INT-SL+ has some other wire connections that are made directly to the Viper 5101.
Rather that spend a lot of time on "what-ifs", you should decide on the exact modules / equipment that you want to use
and make up a wire connection chart like the one in the Pictorial. The Pictorial used a Avital 4101 and it's wire names /
terminology is similar to the Viper 5101. Post the chart and the Forum members can look it over and provide some sage
input.
Soldering is fun!