Buick 24221125 Switch,Parking/Neutral Position & Back Up Lamp

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Start by ensuring that the engine only starts in Park or Neutral. The switch is located inside the vehicle at the bottom of the steering column. Apply the parking brake and place the gear selector in Neutral. Rotate the switch clockwise to the Low position and then move the gear selector to Park, which will ratchet the switch to the correct position.

Remove the manual lever nut and the manual lever itself.

The Park/Lock system is designed to prevent the shift lever from being moved out of Park unless the brake pedal is depressed simultaneously, and to prevent the ignition key from being removed from the ignition switch unless the shift lever is in the Park position. To remove the actuator, the vehicle should be parked with the shift lever in Neutral, the parking brake set, and the airbag system disabled. The wiring should be disconnected, and the actuator pried off of the cable shift cam and steering column. The actuator should then be snapped onto the cable shift cam and steering column cover, and the wiring reconnected. The adjuster block should be pressed to disengage the internal teeth of the mechanism, and then slid away from the actuator as far as possible. To install the actuator, the tab should be pushed in to lock it in place, and the battery reconnected. The operation of the actuator should be checked by making sure that the lever can only be moved out of Park when the brake pedal is depressed, and readjusted if necessary. Finally, the knee bolster should be reinstalled.

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.

For adjustment on 1995 and later models, move the shift lever to the Park position, allowing the main housing and housing back to ratchet the switch to the correct position.

The ignition key should come out only in the Lock position.

The Park/Lock system is a safety feature in a car that prevents the shift lever from being moved out of Park unless the brake pedal is depressed. It also prevents the ignition key from being removed unless the shift lever is in the Park position. When the car is started, a solenoid is activated, locking the shift lever in Park. When the brake pedal is pressed, the solenoid is deactivated, allowing the shift lever to be moved into other gears. In the event of an electrical failure, there is a manual override that can be used to shift the transmission out of Park. This involves removing the shift lever trim boot and locating the override lever on the upper right side of the shift lever bracket, then moving it towards the front of the vehicle. If the shift lock control solenoid needs to be replaced, the steering column covers need to be removed and the electrical connector disconnected. The solenoid can then be pried from the column using a flat-bladed screwdriver. Installation is the reverse of removal.

To adjust the switch, you need to loosen the mounting bolts and slightly turn it until the engine only starts in park or neutral, then tighten the bolts.

The Park/Neutral Position switch is located on the side of the transmission over the manual shaft.

Remove the manual lever retaining nut and remove the manual lever from the manual shaft.

The intake air temperature (IAT) sensor acts as a thermistor. To check it, you can measure its resistance at different temperatures to ensure it changes as expected. Additionally, you should monitor the IAT sensor using a scan tool to verify its performance.

The Park/Neutral Position switch, also known as the transmission range switch, is located on the side of the transmission over the manual shaft. It serves as an information sensor for the Powertrain Control Module (PCM) and performs functions such as preventing the engine from starting in any gear other than park or neutral, and activating the back-up lights when the shift lever is in reverse. To adjust the switch, loosen the mounting bolts and slightly turn it until the engine only starts in park or neutral, then tighten the bolts. For replacement, disconnect the battery cable, apply the parking brake, and put the shift lever in neutral. Remove the shift cable and electrical connector from the switch, as well as the manual lever. Then, remove the switch retaining bolts and detach it from the transmission. To install a new switch, align the slots on the switch with the notch on the switch body and install it onto the shaft. If using the old switch, align the flats of the manual shaft with the flats of the switch. Install the switch mounting bolts, tighten them to the specified torque, and reinstall the manual lever. Finally, attach the shift cable and reconnect the electrical connectors.

Remove the TR switch mounting bolts and the TR switch.

To replace the shift lock control solenoid, the steering column covers need to be removed and the electrical connector disconnected. The solenoid can then be pried from the column using a flat-bladed screwdriver. Installation is the reverse of removal.

The operation of the actuator should be checked by making sure that the lever can only be moved out of Park when the brake pedal is depressed, and readjusted if necessary.

To remove the Park/Neutral switch on 1994 models, unplug the electrical connector and pull the switch straight out of the steering column. Align the actuator with the holes in the shift tube, press down on the front of the switch until the tangs snap into the rectangular holes in the steering column jacket.

Remove the TR switch mounting bolts and the TR switch.

Finally, the knee bolster should be reinstalled.

Align the slots on the switch with the notch on the switch body and install it onto the shaft.

Verify that the engine will start only in PARK and NEUTRAL.

The operation of the actuator should be checked by making sure that the lever can only be moved out of Park when the brake pedal is depressed, and readjusted if necessary.

Installation involves pressing the switch onto the steering column, connecting the electrical connectors, and adjusting the switch.

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

Try to start the engine in each gear. The engine should crank only in Park or Neutral. Make sure the steering column lock allows the key to go into the Lock position only when the shift lever is in Park. The ignition key should come out only in the Lock position.

Apply the parking brake and put the shift lever in NEUTRAL.

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 manifold absolute pressure (MAP) sensor monitors intake manifold pressure changes and varies its voltage output accordingly. To check it, you should check the reference voltage and signal voltage with the ignition on and engine off, and observe voltage changes as the engine's vacuum changes.