2003 GMC Envoy Q&A

2003 GMC Envoy Question: WHY DOES MY SECURITY LIGHT FLASHES AND IT WANT CRANK WHEN FLASHING

IT CRANKS WHEN ITS NOT FLASHING BUT WHEN IT FLASHES IT WANT DO NOTHING -
Answer 1
there maybe a problem with the onboard security system... -
Answer 2
Do you use the same key every time? -
Answer 3
scan anti theft for codes and post so we can adv -