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Engine-Codes – GMC – C0899 2017 GMC Sierra

C0899 2017 GMC Sierra Code - Device Voltage Malfunction

Quick Answer

The C0899 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a device voltage malfunction. Common causes include Faulty wiring or loose connections in the electrical system, A malfunctioning power supply or voltage regulator, A defective electronic component, such as a sensor or control module. 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
C0899 2017 GMC Sierra indicates Device Voltage Malfunction.
Common causes
Common causes include Faulty wiring or loose connections in the electrical system, A malfunctioning power supply or voltage regulator, A defective electronic component, such as a sensor or control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 16, 2024
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Code C0899 2017 GMC Sierra Description

The C0899 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a device voltage malfunction. This code is typically triggered when the vehicle's onboard computer detects an issue with the voltage levels of a specific electronic device or component within the vehicle. The voltage levels may be outside of the normal operating range, indicating a potential problem with the device's power supply or electrical circuit.

OBDII Code C0899 2017 GMC Sierra - Device Voltage Malfunction
C0899 2017 GMC Sierra Code - Device Voltage Malfunction

Common Causes of C0899 2017 GMC Sierra

  1. Faulty wiring or loose connections in the electrical system.
  2. A malfunctioning power supply or voltage regulator.
  3. A defective electronic component, such as a sensor or control module.
  4. Corrosion or damage to electrical connectors or terminals.
  5. Issues with the vehicle's battery or alternator.

Symptoms of C0899 2017 GMC Sierra

  1. Warning lights illuminated on the dashboard, such as the Check Engine Light or Battery Light.
  2. Erratic behavior of electronic components, such as power windows, door locks, or infotainment system.
  3. Difficulty starting the vehicle or experiencing intermittent starting issues.
  4. Inconsistent performance of the engine or transmission.
  5. Reduced fuel efficiency or engine power.

How to Fix C0899 2017 GMC Sierra

  1. Begin by conducting a thorough inspection of the vehicle's electrical system, focusing on the affected device and related components.
  2. Check the wiring harness, connectors, and terminals for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
  3. Test the power supply and voltage regulator to ensure they are functioning correctly. Replace if faulty.
  4. Inspect the electronic component associated with the device voltage malfunction and replace if necessary.
  5. Clear the DTC from the vehicle's computer memory using a diagnostic scan tool and perform a test drive to verify that the issue has been resolved.

Cost to Fix C0899 2017 GMC Sierra

The typical repair costs for addressing a device voltage malfunction can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts and labor for this type of repair could range from $150 to $500 or more. It's important to note that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also influence the overall repair costs. For a more accurate estimate, it's recommended to consult with a trusted auto repair shop in your area.

What does this mean?

Tech Notes for C0899 2017 GMC Sierra

- C0899 00: Control Module Power Circuit Malfunction

- C0899 03: Control Module Power Circuit Low Voltage

Need more information about the C0899 2017 GMC Sierra code?

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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 C0899 2017 GMC Sierra Code

1. What does the OBDII code C0899 mean on a 2017 GMC Sierra?

C0899 indicates "Device Voltage Malfunction," meaning the vehicle's control module has detected an issue with low voltage in one of the electrical circuits.

2. What are common symptoms of code C0899 on a 2017 GMC Sierra?

Symptoms may include dim or flickering lights, intermittent electrical issues, warning lights on the dashboard, or reduced functionality in certain systems.

3. What causes the C0899 code to appear?

Common causes include a weak or failing battery, poor alternator performance, corroded or loose battery terminals, or damaged wiring in the electrical system.

4. Can a bad alternator trigger code C0899 on a 2017 GMC Sierra?

Yes, a failing alternator that is unable to provide sufficient voltage can trigger this code.

5. How do I diagnose the C0899 code on my GMC Sierra?

Start by checking the battery voltage with a multimeter, inspecting battery terminals for corrosion or looseness, and testing the alternator output. Also, examine related wiring and connections for damage.

6. Can I still drive my 2017 GMC Sierra with the C0899 code?

While the vehicle may still be drivable, driving with this code can lead to further electrical issues or leave you stranded if the battery or alternator fails completely.

7. How do I fix the C0899 code on a GMC Sierra?

Repairs depend on the cause. Common fixes include replacing the battery, repairing damaged wiring, cleaning and tightening battery terminals, or replacing the alternator.

8. How much does it cost to repair code C0899 on a 2017 GMC Sierra?

Costs vary depending on the issue. A new battery typically costs $100–$300, while alternator replacement can range from $500–$1,000, including labor.

9. Can a faulty ground connection cause the C0899 code?

Yes, a poor ground connection can result in voltage drops, triggering this code. Check and repair any loose or corroded ground straps.

10. Will clearing the C0899 code fix the issue permanently?

Clearing the code only resets the warning temporarily. If the underlying issue is not resolved, the code will reappear. Always address the root cause.

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