GM 22670487 Switch Assembly, Ignition & Start (W/ Lock Cyl Control So

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As a precaution against theft of the vehicle, the ignition switch is located inside the channel section of the brake pedal support and is remotely controlled by a rod and rack assembly from the ignition lock cylinder. For models from 1974 to 1976, the steering column must either be removed or lowered and well supported to access the ignition switch, which can be removed by unscrewing two screws after setting it to the 'LOCK' position. If the lock cylinder and actuating rod have already been removed, the 'LOCK' position can be determined by inserting a screwdriver in the actuating rod slot and moving the switch slide until a definite stop is felt, then moving it down one detent. Installation involves reversing the removal process while ensuring the switch is in the 'LOCK' position and that the original or identical type securing collapsible design of the steering column is inoperative. For models from 1977 onward, the switch should be set to the 'OFF-UNLOCKED' position before removal, and if the lock cylinder has been removed, the switch actuating rod should be pulled up until a definite stop is felt and then pushed down two detents. Before installing the switch, it should be set to the 'OFF-UNLOCK' position with the gearshift lever in neutral, moving the switch slider two positions to the right from 'ACCESSORY' to 'OFF/UNLOCK', fitting the actuator rod into the slider hole, and assembling it to the steering column using two screws, with only the lower one tightened to 35 lbf in torque.