P0495 2014 GMC Sierra Code - Fan Speed High
Quick Answer
The cooling fan relay sends a Pulse Width Modulation (PWM) signal of 12 - 14 volts to the cooling fan clutch through the cooling fan clutch solenoid voltage control circuit. Common causes include Faulty Cooling Fan Relay, Cooling Fan Relay harness is open or shorted, Cooling Fan Relay 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
- P0495 2014 GMC Sierra indicates Fan Speed High.
- Common causes
- Common causes include Faulty Cooling Fan Relay, Cooling Fan Relay harness is open or shorted, Cooling Fan Relay 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 P0495 2014 GMC Sierra Description
What are the Possible Causes of the DTC P0495 2014 GMC Sierra?
- Faulty Cooling Fan Relay
- Cooling Fan Relay harness is open or shorted
- Cooling Fan Relay circuit poor electrical connection
- Faulty cooling fan clutch
- Faulty control unit
How to Fix the DTC P0495 2014 GMC Sierra?
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 P0495 2014 GMC Sierra 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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Frequently Asked Questions about P0495 2014 GMC Sierra Code
1. What does the OBDII code P0495 mean on a 2014 GMC Sierra?
P0495 indicates that the engine control module (ECM) has detected the cooling fan is operating at a higher speed than expected.
2. What are the common symptoms of the P0495 code in a 2014 GMC Sierra?
Symptoms may include unusually loud fan noise, reduced engine performance, overheating issues, or the Check Engine Light illuminating.
3. What causes the P0495 code to appear on a 2014 GMC Sierra?
Common causes include a faulty cooling fan relay, a malfunctioning cooling fan motor, wiring issues such as shorts or open circuits, or a defective engine control module.
4. Can I drive my 2014 GMC Sierra with the P0495 code active?
While the vehicle may still be drivable, it’s not recommended to ignore this code, as it may lead to overheating or other engine performance issues.
5. How do I diagnose the P0495 code on my 2014 GMC Sierra?
Diagnosis involves checking the cooling fan relay, fan motor, and associated wiring for damage or shorts. Scanning for additional codes and verifying fan operation with a diagnostic tool is also essential.
6. What repairs are typically needed to fix the P0495 code?
Repairs may include replacing the cooling fan relay, repairing or replacing damaged wiring, or replacing the cooling fan motor if it’s faulty.
7. How much does it cost to fix the P0495 code on a 2014 GMC Sierra?
Repair costs vary but typically range from $100 to $400, depending on the exact issue, with parts like a fan relay or motor being the primary expenses.
8. Can a low battery or alternator issue trigger the P0495 code?
Yes, electrical problems such as a weak battery or failing alternator can contribute to fan speed control issues and trigger this code.
9. How can I prevent the P0495 code from recurring on my 2014 GMC Sierra?
Regular maintenance of the cooling system, inspecting the fan assembly and wiring, and addressing electrical issues promptly can help prevent recurrence.
10. Will clearing the code with a scan tool fix the P0495 issue?
Clearing the code may turn off the Check Engine Light temporarily, but the underlying problem must be resolved to prevent the code from returning.
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