| Subject: | Programming Vehicle to Accept Additional/Replacement Key(s) . |
| Models: | 1999-2000 Chevrolet Trans Sport (Export Only) |
| 1998-2000 Cadillac Seville (Export Only) |
| Attention: | U.S. and Canadian Dealers are not authorized to utilize this Service
Bulletin. |
The models described above are shipped from the assembly
plants with two (2) sets of ignition keys.
If service of the vehicle results in the replacement of the Powertrain
Control Module (PCM), or the Theft Control Module, perform the procedure below.
This will allow the vehicle to accept the ignition keys used in the vehicle.
If the Theft Control Module is replaced, the control module will learn
the keys immediately. However, the fuel control continue password from the
theft control module will be different. The PCM will not recognize the password
and the PCM will disable the fuel delivery.
| • | The PASS-Key® III system must always know at least two keys. |
| • | The vehicle may be programmed to accept up to ten keys total. |
| • | The key re-learn procedure will require the use of a Tech 2 scan
tool and a Techline terminal . |
Key Re-Learn Procedure with No Good Key or One Good Key (Model Year
1998-2000)
Important: When reprogramming a key using the Tech 2, all previous learned keys
will not be valid. All existing keys will have to be programmed to re-learn
the new key.
- Turn the ignition ON with the new key.
- Install a Tech 2 scan tool to the vehicle and power the tool ON.
- From the main menu of the Tech 2, select Service Programming System
(SPS) or the F1 key.
- Select the correct model year and vehicle type.
- Select reprogram existing module.
- Press the " Request Info" key (VIN and PCM calibration
ID numbers should display)
- Verify the correct VIN and press the YES key.
- Follow the instructions on the Tech 2 to turn it off, then disconnect
the Tech 2 from the vehicle.
- Connect the Tech 2 to a Techline terminal that is powered ON.
- On the Techline terminal, select "Service Programming System"
(SPS).
- Select programming method, "Terminal to Tech 2".
- Select "Done" and then follow the on screen procedure.
- Select "Theft Module Re-Learn". The Techline terminal
will download to the Tech 2.
- Follow the instructions on the Tech 2 to power down and disconnect
the Tech 2 from the Techline terminal.
- Reconnect the Tech 2 to the vehicle and power the Tech 2 ON.
- Turn the ignition ON with the engine OFF.
- From the main menu of the Tech 2, select Service Programming System
(SPS) or the F1 key.
- Press the "VTD Learn" soft key. If the VTD soft key
is not present, the Tech 2 is not programmed correctly.
- The Tech 2 will begin a 10 minute countdown. Observe the security
telltale lamp on the instrument panel. After 10 minutes the telltale lamp
will turn off.
Important: For the 1999 Chevrolet Trans Sport, the "security telltale"
lamp on the dash may stay illuminated until a second key is programmed.
- When finished, turn the vehicle ignition switch OFF and wait 5
seconds (leave the key in the ignition).
- Turn the ignition key ON and the key will be learned.
- Reprogram the second key using the same steps above.
Reprogramming Additional Keys with Two Known Good Keys
(Model Year 2000 Only)
Important: For the 2000 Cadillac Seville, the black master key must be used for
this procedure. The grey valet key will not allow additional keys to be learned.
- Insert one of the two known good keys into the ignition.
- Turn the ignition key to the ON position for 5 seconds.
- Turn the ignition key OFF, then remove the key.
- Insert the second known good key into the ignition.
- Turn the key to the ON position for 5 seconds. The telltale lamp
will illuminate momentarily. After 5 seconds the programming is complete.
- A total of 10 keys can be learned using steps 1-3 above.
