For 1990-2009 cars

### Changing VTD Components

Important: Due to component variability, the vehicle theft deterrent (VTD) system must have the learn procedure performed regardless, if the vehicle starts on the first ignition cycle after a VTD repair.

All codes in the theft deterrent module must be cleared for a relearn.

If various theft deterrent parts are changed the PASSLOCK™ System is designed to prevent theft. Parts that cannot be changed without the possibility of going into a tamper mode are:

• | PASSLOCK™

• | Instrument Cluster

• | Powertrain Control Module (PCM)

If any of these parts are replaced, the vehicle may start and stall for 10 minutes (Long Tamper Mode). If this occurs, the system MUST go through a Long Tamper Mode cycle. The THEFT indicator will be flashing for 10 minutes. The instrument Cluster and Powertrain Control Module (PCM) require the 10 minutes to complete a learn cycle. The ignition switch MUST remain in the RUN position until the indicator stops flashing or the cycle will have to be repeated.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Replace the failed component. Are all of the connections plugged in? | -- | Go to Step 2 | --
2 | Start the vehicle. Did the vehicle continue to run? | -- | Go to Step 3 | Go to Step 4
3 | Did the Theft telltale turn off (may take 10 seconds)? | -- | System OK | Go to Step 7
4 | Is the Theft telltale flashing? | -- | Go to Step 5 | Go to Step 2
5 | Is the Theft telltale flashing for longer than 10 seconds? | -- | Go to Step 6 | Go to Step 7
6 | Leave the key in the run position until the telltale turns on solid--takes approximately 10 minutes. | -- | Go to Step 2 | --
7 | Replace the vehicle Theft Deterrent Component. Is the repair complete? | -- | System OK | --