P0808 GMC Code - Clutch Pedal Position Sensor Circuit High Voltage
Quick Answer
The Clutch Pedal Position (CPP) sensor is a three-wire sensor, connected to a 5 V reference circuit, a low reference circuit, and a signal circuit. Common causes include Faulty Clutch Pedal Position (CPP) Sensor, Clutch Pedal Position Sensor harness is open or shorted, Clutch Pedal Position Sensor circuit poor electrical connection. 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 GMC indicates Clutch Pedal Position Sensor Circuit High Voltage.
- Common causes
- Common causes include Faulty Clutch Pedal Position (CPP) Sensor, Clutch Pedal Position Sensor harness is open or shorted, Clutch Pedal Position Sensor circuit poor electrical connection.
- 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.
Code P0808 GMC Description
What are the Possible Causes of the DTC P0808 GMC?
- Faulty Clutch Pedal Position (CPP) Sensor
- Clutch Pedal Position Sensor harness is open or shorted
- Clutch Pedal Position Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0808 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0808 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific GMC Models
- P0808 2014 GMC Sierra — Clutch Pedal Position Sensor Circuit High Voltage
- P0808 2015 GMC Sierra — Clutch Pedal Position Sensor Circuit High Voltage
- P0808 2016 GMC Sierra — Clutch Pedal Position Sensor Circuit High Voltage
- P0808 2017 GMC Sierra — Clutch Pedal Position Sensor Circuit High Voltage
- P0808 2018 GMC Sierra — Clutch Pedal Position Sensor Circuit High Voltage
Frequently Asked Questions about P0808 GMC Code
1. What does the OBDII code P0808 mean for a GMC vehicle?
P0808 indicates a high voltage issue in the clutch pedal position sensor circuit, which monitors the position of the clutch pedal for proper vehicle operation.
2. What are the common symptoms of a P0808 code in GMC vehicles?
Symptoms may include difficulty starting the vehicle, poor transmission performance, or the Check Engine Light being illuminated.
3. What causes the P0808 code on a GMC?
Common causes include a faulty clutch pedal position sensor, damaged wiring or connectors, or issues with the vehicle's PCM.
4. Can a P0808 code affect vehicle performance?
Yes, it can lead to problems with starting the engine or shifting gears, especially in manual transmission vehicles.
5. How do I diagnose the P0808 code on a GMC?
Inspect the clutch pedal position sensor, check for damaged wires or connectors, and use a scan tool to monitor sensor voltage readings.
6. What tools are needed to fix the P0808 code?
A diagnostic scan tool, multimeter, and basic hand tools are typically required for troubleshooting and repair.
7. Is it safe to drive with the P0808 code active?
Driving may be possible, but issues like starting difficulty or gear shifting problems could worsen, so repairs should be prioritized.
8. How do you fix a P0808 code on a GMC vehicle?
Repairs may include replacing the clutch pedal position sensor, repairing wiring, or updating/reprogramming the PCM.
9. Can the P0808 code trigger other transmission-related issues?
Yes, it can indirectly affect gear selection and overall transmission functionality if not resolved.
10. How much does it cost to repair a P0808 code on a GMC?
Costs depend on the specific issue but typically range from $100 to $300 for sensor replacement and labor.
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