Hi Jamie, to reprogram the fob, switch ignition ON (not start) programming mode activated for 30 seconds, press either the lock or unlock button, c/locking operates to confirm reprogramming switch ignition OFF, relacement fobs can only be programmed by using diagnostic kit ie dealers
nigel
May 2008
I can answer this question...
vectra w reg 2.0 sri 140 alarm goes off when i open door?