F09 Alarm On/Off Switch on 1977-82 vehicle does not arm in the proper position. Why not?
We have been made aware that occasionally customer’s experience a problem when installing our reproduction (and even NOS GM) Alarm On/Off Switches. After a new alarm switch is installed, when the door is locked and the key removed, the alarm should be turned-on. But some customers state that while turning the key to lock their car everything works properly (alarm has turned-on) until the final fraction of a turn – when the key is in the position to be removed – that the alarm turns off again. Our research has found no documentation as to what the GM assembly line workers did to correct this problem. But we do have a possible solution that can be found in the inner piece of the switch (yellow part on our switch below) that goes over the lock cylinder shaft. To modify this switch, using an Exacto knife or small blade to carefully remove (shave-off) a very small amount of the plastic in the area(s) shown below in red. Should you modify your switch? If so, from which side should you remove
