Engine-CodesGMC – P0617 2015 GMC Sierra

P0617 2015 GMC Sierra Code - Starter Relay Control Circuit High Voltage

Quick Answer

The P0617 diagnostic trouble code (DTC) for the 2015 GMC Sierra indicates an issue with the starter relay control circuit having high voltage. Common causes include Faulty starter relay, Short circuit in the wiring harness, Corroded or loose connections in the 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
P0617 2015 GMC Sierra indicates Starter Relay Control Circuit High Voltage.
Common causes
Common causes include Faulty starter relay, Short circuit in the wiring harness, Corroded or loose connections in the 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 Aug 25, 2024
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Code P0617 2015 GMC Sierra Description

The P0617 diagnostic trouble code (DTC) for the 2015 GMC Sierra indicates an issue with the starter relay control circuit having high voltage. The starter relay is responsible for sending power from the battery to the starter motor when the ignition key is turned. When the voltage in the starter relay control circuit is too high, it can lead to issues with starting the vehicle and potentially cause damage to electrical components.

OBDII Code P0617 2015 GMC Sierra - Starter Relay Control Circuit High Voltage
P0617 2015 GMC Sierra Code - Starter Relay Control Circuit High Voltage

Common Causes of P0617 2015 GMC Sierra

  1. Faulty starter relay
  2. Short circuit in the wiring harness
  3. Corroded or loose connections in the circuit
  4. PCM (powertrain control module) malfunction

Symptoms of P0617 2015 GMC Sierra

  1. Engine not cranking when trying to start the vehicle
  2. Intermittent starting issues
  3. Check Engine Light illuminated on the dashboard
  4. Electrical issues such as flickering lights or power windows not working

How to Fix P0617 2015 GMC Sierra

  1. Perform a thorough inspection of the starter relay control circuit, including the relay itself, wiring harness, and connections.
  2. Test the voltage in the circuit to determine if it is indeed too high.
  3. Replace the starter relay if found to be faulty.
  4. Repair any short circuits or corroded connections in the wiring harness.
  5. Clear the DTC and test the vehicle to ensure proper starting operation.

Cost to Fix P0617 2015 GMC Sierra

The typical repair costs for resolving a P0617 code in a 2015 GMC Sierra can vary depending on the specific cause of the issue. Generally, replacing a faulty starter relay can cost between $50 to $150, while addressing wiring harness issues or PCM problems may require additional labor and parts, potentially ranging from $100 to $500. Keep in mind that diagnosis time and labor rates at auto repair shops can vary, so it's recommended to obtain quotes from local shops for a more accurate estimate.

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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.

Frequently Asked Questions about P0617 2015 GMC Sierra Code

1. What does the OBDII code P0617 mean for a 2015 GMC Sierra?

P0617 indicates a "Starter Relay Control Circuit High Voltage," meaning the ECM has detected an unusually high voltage in the starter relay control circuit.

2. What are the common symptoms of code P0617 on a 2015 GMC Sierra?

Symptoms may include difficulty starting the engine, intermittent no-start conditions, or a check engine light illuminated on the dashboard.

3. What causes the P0617 code to appear on a 2015 GMC Sierra?

Common causes include a faulty starter relay, damaged wiring or connectors in the starter circuit, or an issue with the ECM itself.

4. Can a weak battery cause the P0617 code on a 2015 GMC Sierra?

Yes, a weak or failing battery may cause voltage irregularities that trigger the P0617 code.

5. How do you diagnose the P0617 code on a 2015 GMC Sierra?

Diagnosis involves checking the starter relay, inspecting the wiring and connectors for damage or corrosion, and testing the battery and alternator for proper voltage.

6. Can a faulty starter relay trigger the P0617 code on a 2015 GMC Sierra?

Yes, a malfunctioning starter relay can cause high voltage readings in the control circuit, leading to the P0617 code.

7. Is it safe to drive a 2015 GMC Sierra with the P0617 code?

Driving with this code is not recommended as it may cause starting issues or lead to further damage to the electrical system.

8. How do you fix the P0617 code on a 2015 GMC Sierra?

Repairs may include replacing the starter relay, repairing or replacing damaged wiring, testing and replacing the battery, or addressing ECM issues if necessary.

9. Can corrosion in the wiring cause the P0617 code on a 2015 GMC Sierra?

Yes, corrosion in the wiring or connectors can lead to high resistance or voltage issues, triggering the P0617 code.

10. Does the P0617 code require ECM replacement on a 2015 GMC Sierra?

ECM replacement is rare and typically only necessary if all other components, such as the starter relay and wiring, have been ruled out as causes.

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