2002 Blazer 4x4 has a weird issue. If I lock the doors with the KeyFob or Pushing the driver do lock panel to look all doors, about an hour later, the alarm starts going off. However, If I lock them, by just pushing down, each lock one by one(no setting the alarm, or using the keyfob). The alarm obviously doesn't engage, so it can't go off. Any thoughts?

 

Bump.