P1563 GMC Code - Cruise Vehicle Speed/Set Speed Difference Too High
Quick Answer
The P1563 GMC diagnostic trouble code indicates that the vehicle's cruise control system has detected a discrepancy between the set speed and the actual vehicle speed. Common causes include Faulty speed sensor, Malfunctioning cruise control module, Wiring issues or loose connections in the cruise control system. 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
- P1563 GMC indicates Cruise Vehicle Speed/Set Speed Difference Too High.
- Common causes
- Common causes include Faulty speed sensor, Malfunctioning cruise control module, Wiring issues or loose connections in the cruise control system.
- 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.
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Code P1563 GMC Description
The P1563 GMC diagnostic trouble code indicates that the vehicle's cruise control system has detected a discrepancy between the set speed and the actual vehicle speed. This can occur when the vehicle's speed sensor readings are inconsistent or when there is a problem with the cruise control module. When the vehicle's onboard computer detects this issue, it will trigger the check engine light and store the P1563 code in its memory.
Common Causes of P1563 GMC
- Faulty speed sensor
- Malfunctioning cruise control module
- Wiring issues or loose connections in the cruise control system
- Vacuum leaks in the intake system
- Electronic control unit (ECU) malfunction
Symptoms of P1563 GMC
- Check engine light is illuminated
- Inability to set or maintain a consistent speed using the cruise control system
- Vehicle speed fluctuations while driving on the highway
- Decreased fuel efficiency
- Unusual engine or transmission behavior
How to Fix P1563 GMC
- Begin by diagnosing the root cause of the issue using an OBD-II scanner to read the stored trouble code
- Inspect the vehicle's speed sensor to ensure it is functioning correctly
- Check the cruise control module for any signs of damage or malfunction
- Inspect the wiring and connections in the cruise control system for any issues
- If necessary, replace the faulty component and clear the trouble code from the vehicle's memory
Cost to Fix P1563 GMC
The typical repair costs for addressing the P1563 GMC code can vary depending on the specific cause of the issue. Generally, replacing a faulty speed sensor or cruise control module can cost between $200 and $500, including parts and labor. However, additional diagnostic time and labor rates at auto repair shops can influence the final cost. It is advisable to consult with a professional mechanic for a more accurate estimate based on your vehicle's make and model.
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