This "erasing remote" instructions might help, not sure...

PROGRAMMING INSTRUCTIONS
VEHICROSS: 99-01
Remote added or replaced/system malfunction

ERASING REMOTE:
NOTE: THIS ERASES ALL PREVIOUSLY PROGRAMMED REMOTES
-ACCESS THE PROGRAMMING BUTTON ON THE REMOTE ALARM/CENTRAL LOCKING CONTROL MODULE LOCATED ABOVE THE LH KICK PANEL
- TURN IGNITION TO ON

NOTE: IT MAY BE NECESSARY TO DISARM REMOTE ALARM.CENTRAL LOCKING SYSTEM BY EITHER PUSHING A REMOTE BUTTON TO UNLOCK THE DOORS OR BY TURNING THE IGNITION TO ON, OFF, THEN ON

1. PUSH & HOLD THE PROGRAMMING BUTTON FOR 2 SECONDS
2. THE SYSTEM WARNING LAMP WILL ILLUMINATE FOR 5 SECONDS
3. WHILE THE SYSTEM WARNING LAMP IS LIT UP: - PRESS & HOLD THE PROGRAMMING BUTTON FOR OVER 2 SECONDS
4. THE SYSTEM WARNING LAMP WILL FLASH 3 TIMES
5. AN ACOUSTIC SOUND IS EMITTED 3 TIMES & THE PARKING LAMPS WILL FLASH 3 TIMES
6. TURN IGNITION SWITCH TO OFF