2002 Chevy Impala
3.4 v6
Security light
tip/donation yes
GM tech = jk
question = 2002 chevy Impala Auto 3.4L Car sometimes will not crank
over when you turn key to start. Everything comes on as normal but engine
will not turn over. I can rock the car back and forth move the gearshift
up and down and mess with the battery cables and out of the clear blue
it will start. It may not happen again for a couple of months. I am
thinking maybe neutral safety switch but not for sure. BCM was replaced a
couple of years ago. If switch is it under dash or on trans. Thanks
JK:
Thank you for your tip/donation.
If after it does not start, the theft/security light is on when it wont start and the
key is still on, you have a security problem. The most common cause of this is
a faulty ignition cylinder. I will send you the repair procedure if you want to do
this yourself. Just let me know.
There is also a CRANK RELAY in the underhood fuse block. May want to
swap it with another one of same type from that block, or just replace it- they
are pretty inexpensive. Do this before
replacing the Passlock cylinder, and let me know what happens.
Chevrolet Impala Theft learn Procedure
3.4 v6
Security light
tip/donation yes
GM tech = jk
question = 2002 chevy Impala Auto 3.4L Car sometimes will not crank
over when you turn key to start. Everything comes on as normal but engine
will not turn over. I can rock the car back and forth move the gearshift
up and down and mess with the battery cables and out of the clear blue
it will start. It may not happen again for a couple of months. I am
thinking maybe neutral safety switch but not for sure. BCM was replaced a
couple of years ago. If switch is it under dash or on trans. Thanks
JK:
Thank you for your tip/donation.
If after it does not start, the theft/security light is on when it wont start and the
key is still on, you have a security problem. The most common cause of this is
a faulty ignition cylinder. I will send you the repair procedure if you want to do
this yourself. Just let me know.
There is also a CRANK RELAY in the underhood fuse block. May want to
swap it with another one of same type from that block, or just replace it- they
are pretty inexpensive. Do this before
replacing the Passlock cylinder, and let me know what happens.
Chevrolet Impala Theft learn Procedure
Chevrolet Impala theft / security problem.
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.
This warning could be on when the engine is running, indicating a fault has been detected in the
system. If left un repaired, there is a good possibility that the car will eventually not start.
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.
This warning could be on when the engine is running, indicating a fault has been detected in the
system. If left un repaired, there is a good possibility that the car will eventually not start.
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.
