Problem with my 2000 Oldsmobile Alero
Engine size = 3.4l v6
dash lights = security
GM Computer codes = no
Repair work done prior = just tried to start it.
tip/donation yes
GM tech = jk
question = I just changed the ignition cylinder tumbler because i could not turn
the key to start my Olds Alero. The security light is flashing the dash. Why is the
light on. I have read in other forums that i need to re-learn the theft code. How
do i do that fix. Is it easy or do i need to go to the dealer. How much would it cost
for this repair.
JK:
This is a common problem on this and many other GM vehicles.
Perform this relearn procedure below. It will get the car to start.
Engine size = 3.4l v6
dash lights = security
GM Computer codes = no
Repair work done prior = just tried to start it.
tip/donation yes
GM tech = jk
question = I just changed the ignition cylinder tumbler because i could not turn
the key to start my Olds Alero. The security light is flashing the dash. Why is the
light on. I have read in other forums that i need to re-learn the theft code. How
do i do that fix. Is it easy or do i need to go to the dealer. How much would it cost
for this repair.
JK:
This is a common problem on this and many other GM vehicles.
Perform this relearn procedure below. It will get the car to start.
Oldsmobile Alero Theft system re-learn procedure.
Attempt to start the engine, then release the key to ON, vehicle will not start.
Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
Turn OFF the ignition, and wait 5 seconds.
The vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next
ignition switch transition from OFF to CRANK.
Start the engine, the vehicle has now learned the Passlock Sensor Data Code and/or password.
Best to have a battery charger on during this time to avoid a weak battery.
A very weak battery can cause programming failure.
Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
Turn OFF the ignition, and wait 5 seconds.
The vehicle is now ready to relearn the Passlock Sensor Data Code and/or passwords on the next
ignition switch transition from OFF to CRANK.
Start the engine, the vehicle has now learned the Passlock Sensor Data Code and/or password.
Best to have a battery charger on during this time to avoid a weak battery.
A very weak battery can cause programming failure.
Theft / Security Light
The security system on todays cars and trucks prevents the vehicle from being stolen. There are many
variations of the system going back to the early 1990's. Systems have been called Theftlock, passlock,
PK3.
This warning could be on when the engine is running, indicating a fault has been detected in the system.
There are several different possibilities for the cause of the warning, depending on the make / model / year
of the vehicle. Anything from a bad ignition cylinder wire, to a bad cylinder to a dad Body Control Module
(BCM).
After market (non-factory) alarm and remote start systems can cause havoc with the factory theft system,
causing this warning light, or a no start.
The security system on todays cars and trucks prevents the vehicle from being stolen. There are many
variations of the system going back to the early 1990's. Systems have been called Theftlock, passlock,
PK3.
This warning could be on when the engine is running, indicating a fault has been detected in the system.
There are several different possibilities for the cause of the warning, depending on the make / model / year
of the vehicle. Anything from a bad ignition cylinder wire, to a bad cylinder to a dad Body Control Module
(BCM).
After market (non-factory) alarm and remote start systems can cause havoc with the factory theft system,
causing this warning light, or a no start.
1996 Oldsmobile Achieva. Check engine and security light.
I have put in 2 sets of gauges and a new AC Delco lock cylinder. My keys have no chip in them.
The gauges worked after repairs then when I went to pick it up from the mechanic no gauges
worked. I drove the car home. I just started the car and the check engine and security lights stayed
on and the gauges seem to be working again.
Question = The gauges were replaced twice, the first set the speedometer did not work in the set
so I got another set, and my mechanic put in a new AC Delco lock cylinder. When I picked up the
car the gauges did not work and I drove home. I just started the car and the gauges seem to be
working in park (I did not try to drive to see if the speedo works, but the tach does now, seems like
the gas and coolant too) and the check engine and security light stay on. How can I clear the
computer and turn off the check engine and security lights? My car does not use a chip in the key.
I have put in 2 sets of gauges and a new AC Delco lock cylinder. My keys have no chip in them.
The gauges worked after repairs then when I went to pick it up from the mechanic no gauges
worked. I drove the car home. I just started the car and the check engine and security lights stayed
on and the gauges seem to be working again.
Question = The gauges were replaced twice, the first set the speedometer did not work in the set
so I got another set, and my mechanic put in a new AC Delco lock cylinder. When I picked up the
car the gauges did not work and I drove home. I just started the car and the gauges seem to be
working in park (I did not try to drive to see if the speedo works, but the tach does now, seems like
the gas and coolant too) and the check engine and security light stay on. How can I clear the
computer and turn off the check engine and security lights? My car does not use a chip in the key.
Answer: You would need a proper scanner to clear any codes and turn
off the check engine light and security light. You probably still have a
problem or two since the lights are on, they are usually on for a
reason. The instrument cluster could be causing problems, since it
seems to work intermittently. Your vehicle should have the ignition
keys that have a chip in them. That's how it would have come from the
factory. I'd get the car looked at again and make sure the right parts
on the car. If someone has modified the security system, it would need
to be put back to factory spec. If there's an alarm or remote starter on
the vehicle, that can cause security issues as well.
off the check engine light and security light. You probably still have a
problem or two since the lights are on, they are usually on for a
reason. The instrument cluster could be causing problems, since it
seems to work intermittently. Your vehicle should have the ignition
keys that have a chip in them. That's how it would have come from the
factory. I'd get the car looked at again and make sure the right parts
on the car. If someone has modified the security system, it would need
to be put back to factory spec. If there's an alarm or remote starter on
the vehicle, that can cause security issues as well.