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Pass lock light stays lit whils driving is this serious 2002 impala?
Wiki User
∙ 16y ago
My understanding is that this indicates the BCM has detected an incorrect voltage signal from the Passlock sensor (part of the ignition lock cylinder) at some time after you started the engine. This is a situation that must be corrected to prevent a similar incorrect voltage being read during starting, which would cause the car to non start.
It is very common for this to happen on these cars. To fix the problem, you will need to replace the lock cylinder. Your GM dealer parts department and many mechanics and locksmiths can set up (code) the new lock cylinder to your existing key so that you do not need a new key.
I strongly recommend replacing the ignition switch whenever it is necessary to replace the lock cylinder.
It is possible, but very rare, for corrosion at the BCM wiring connector to cause the same symptom, as can a fault inside the instrument panel cluster itself.
Instruction for replacing the lock cylinder and ignition switch are available on this web site as part of answers to previously asked questions.
Wiki User
∙ 16y ago
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