In a 2001 Bravada, the security light may come on and prevent the vehicle from starting due to issues with the vehicle's anti-theft system. This can occur if the ignition key is not recognized, often due to a malfunction in the key's transponder or the ignition system itself. Additionally, a drained battery or faulty wiring within the security system could also trigger the light. To resolve this, you may need to reset the system or have the key and ignition checked by a professional.
if you have a "chipped " key, the security system is not recognizing the signal. Have you tried a spare key.?
if the light goes off it's probably the starter...
If the Bravada is not starting but the engine turns over, check for spark at the plugs. If there is no spark the ignition system will need troubleshooting to find the problem.
security light on 1998 s10 start but cut off
Its an Oldsmobile
ANWSER
Not enough information regarding why the car won't start but as to he security light; it's always blinking when the engine is off.
The red light indicates a failure in the security system. It will not start with a failure.
security light keep flashing put new starter on still will not crank
Popping noice on my 97 bravada
is your security light flashing? turn the key on, leave on for 10 mins, turn key off let it sit for 2 mins, start car
probably your security system . Search google for "Bypass GM Vats Security"