1998-2002 GMC Savana, Chevrolet Express

Locate the TDM and install the PRO Bypass

The TDM (or passlock control module) is in the dash behind the radio area and you can get at it above the fuel pedal.


  1. Push the tab (3) at the rear of the Passlock™ control module in order to release the module from the Passlock™ control module bracket (4).

  2. Slide the Passlock™ control module (2) out of the Passlock™ control module bracket (4).

  3. Disconnect the electrical connector (5) from the Passlock™ control module (2).



There is 1 electrical connectors on the TDM (or Passlock control module).



If the enclosure of your NEWROCKIES PRO Module is green and blue, please setup the switches as following (if enclosure is black, please submit a request to our support team for correct switch configurations): 


Open the NEWROCKIES PRO Module's cover (this will NOT void the warranty) by removing the 2 screws on the bottom. Inside there are 2 sets of switches.


Set SW1 (8 switches) as following:

1 2 3 4 5 6 7 8
on off off off off on on off


Set SW2 (10 switches) as following:

1 2 3 4 5 6 7 8 9 10
off off off off off off off on off off


To install the NEWROCKIES PRO Module, connect it as following:


Pro Bypass

Car Wires

RED & WHITE wires      

Splice to Pink wire in TDM Connector Pin B3.


Splice  into Black/White wire in Pin B1.






Cut the yellow wire in Pin B7 and attach the YEL wire of the Pro module to it towards the TDM. Tape the other side.


Splice into the orange/black wire in Pin B5


ImportantMake sure the TDM is plugged back in and the 1 wires are taped to the harness out of the way.



Perform the re-learning procedure

  1. Turn ON the ignition, with the engine OFF.
  2. Attempt to start the engine, then release the key to ON (vehicle will not start).
  3. Observe the SECURITY light, after approximately 11 minutes the light will turn OFF.
  4. Turn OFF the ignition, and wait 10 seconds.

Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes ( the vehicle is now ready to relearn the Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK).


Important: The vehicle relearns Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

Start the engine (the vehicle has now learned the Sensor Data Code and/or password).

If the engine runs but the security light remains on after this, cut the Yellow wire in TDM location B2 and tape the ends to the side.



IMPORTANT: If your car still does not start, please follow the troubleshooting directions for Passlock 1/2 Systems before contacting our support team. This will make it easier and faster for us to handle your support questions and will enable us to serve you better.


The installation is completed.

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