Engine-CodesGMC – P0808 2017 GMC Sierra

P0808 2017 GMC Sierra Code - Clutch Pedal Position Sensor Circuit High Voltage

Quick Answer

The P0808 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the clutch pedal position sensor circuit registering high voltage. Common causes include Faulty clutch pedal position sensor, Wiring issues such as shorts or open circuits in the sensor circuit, Corrosion or poor connections in the sensor circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0808 2017 GMC Sierra indicates Clutch Pedal Position Sensor Circuit High Voltage.
Common causes
Common causes include Faulty clutch pedal position sensor, Wiring issues such as shorts or open circuits in the sensor circuit, Corrosion or poor connections in the sensor circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P0808 2017 GMC Sierra Description

The P0808 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a problem with the clutch pedal position sensor circuit registering high voltage. The clutch pedal position sensor is a crucial component that detects the position of the clutch pedal and relays this information to the engine control module (ECM). This data is used by the ECM to determine the appropriate fuel delivery and ignition timing for optimal engine performance.

OBDII Code P0808 2017 GMC Sierra - Clutch Pedal Position Sensor Circuit High Voltage
P0808 2017 GMC Sierra Code - Clutch Pedal Position Sensor Circuit High Voltage

Common Causes of P0808 2017 GMC Sierra

  1. Faulty clutch pedal position sensor
  2. Wiring issues such as shorts or open circuits in the sensor circuit
  3. Corrosion or poor connections in the sensor circuit
  4. ECM software or hardware issues
  5. Mechanical problems with the clutch pedal assembly

Symptoms of P0808 2017 GMC Sierra

  1. Engine stalling or hesitation when shifting gears
  2. Difficulty engaging or disengaging the clutch
  3. Check Engine Light illuminated on the dashboard
  4. Reduced fuel efficiency
  5. Rough idling

How to Fix P0808 2017 GMC Sierra

  1. Begin by diagnosing the issue using a scan tool to retrieve the DTC and check the clutch pedal position sensor's voltage readings.
  2. Inspect the sensor circuit wiring for any damage, corrosion, or loose connections. Repair or replace any faulty wiring.
  3. Test the clutch pedal position sensor for proper operation and replace it if necessary.
  4. Clear the DTC from the ECM's memory and perform a road test to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to pinpoint the exact cause of the high voltage in the sensor circuit.

Cost to Fix P0808 2017 GMC Sierra

The cost of repairing a clutch pedal position sensor circuit high voltage issue can vary depending on the specific cause of the problem and the labor rates in your area. In general, the cost of parts for a new clutch pedal position sensor can range from $50 to $150, while labor costs can range from $100 to $200. Overall, you can expect to pay anywhere from $150 to $350 for this repair. Keep in mind that these are rough estimates, and actual costs may differ based on your location and the repair shop you choose. It's recommended to obtain quotes from multiple auto repair shops to find the best price for your specific situation.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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