The steering column needs to be disassembled to determine whether the ignition tumbler or the column rack assembly is faulty. Also check the shift lockout system, including a sticking lockout solenoid and the electrical switch that controls it, since a similar Grand Prix was fixed by replacing that switch. Repair cost depends on which part is actually at fault.
A 2002 Pontiac Grand Prix starts normally, but the key often will not return fully to lock or come out, sometimes only after 20–30 minutes. The expert said the column must be taken apart to check for a broken ignition tumbler or rack assembly, and that cost depends on the fault. On a similar 2000 Grand Prix, using the transmission lock override produced a click above the column and then allowed the key to lock; the expert suspected a sticking shift lockout solenoid or related lockout problem. That owner reported fixing it by replacing the electrical switch controlling the lockout solenoid.
