Oldsmobile 15027967 Switch,Clutch Pedal Position

To check the Park/Neutral switch, first, ensure that it prevents the engine from starting in any gear other than Park or Neutral. Raise the vehicle and securely place it on jack stands, then unplug the electrical connector from the Park/Neutral switch. Use an ohmmeter to check continuity across the indicated switch terminals. There should be continuity with the shift lever in Park or Neutral, and no continuity in any other position. If the switch doesn't operate as described, try adjusting it before retesting, and if it still fails, replace it. For removal, apply the parking brake, place the shift lever in Neutral, disconnect the battery cable, raise the vehicle on jack stands, remove the nut and manual lever, unplug the electrical connector from the switch, and remove the switch retaining bolts. Slide the switch off the manual shaft. Installation involves using a special adjustment tool, aligning the switch with the manual shaft flats, sliding it onto the manual shaft, and securing it with mounting bolts. Remove the adjustment tool and complete the remaining installation steps, tightening the manual lever retaining nut to the specified torque.

The Park/Lock system prevents the shift lever from moving out of Park without depressing the brake pedal and the ignition key from being removed unless the shift lever is in Park. To remove the actuator, park the vehicle in Neutral, set the parking brake, and disable the airbag system. Disconnect the wiring and pry off the actuator from the cable shift cam and steering column. Snap the actuator onto the cable shift cam and steering column cover and reconnect the wiring. Press the adjuster block to disengage the internal teeth and slide it away from the actuator. To install the actuator, push the tab to lock it in place and reconnect the battery. Check the operation by ensuring the lever can only move out of Park when the brake pedal is depressed and readjust if needed. Finally, reinstall the knee bolster.

Before checking the Park/Neutral switch, ensure that it prevents the engine from starting in any gear other than Park or Neutral. Additionally, on 1995 and later models, check if it activates the backup lights when in Reverse.

Make sure the steering column lock allows the key to go into the Lock position only when the shift lever is in Park.

The wiring should be disconnected, and the actuator pried off of the cable shift cam and steering column.

The knock sensors detect engine knock. To check them, you should check for reference voltage and resistance.

The oxygen sensor in the exhaust monitors oxygen content. To check it, you can check its millivolt signal while the engine warms up. It is also important to inspect the oxygen sensor heater and ensure it receives proper voltage.

Before checking the Park/Neutral switch, ensure that it prevents the engine from starting in any gear other than Park or Neutral. Additionally, on 1995 and later models, check if it activates the backup lights when in Reverse.