AutoCodes – GMC – C0899 2017 GMC Sierra

C0899 2017 GMC Sierra Code - Device Voltage Malfunction

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Battery voltage, Faulty Control Module, Control Module harness is open or shorted. 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 Battery voltage, Faulty Control Module, Control Module harness is open or shorted.
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 Popularity 328

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 13, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C0899 2017 GMC Sierra Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Damage to components, and incorrect data can occur when the voltage is out of range. The vehicle has multiple Control Modules that will set this Diagnostic Trouble Code (DTC).

OBDII Code C0899 2017 GMC Sierra - Device Voltage Malfunction - AutoCodes.com — C0899 2017 GMC Sierra Code - Device Voltage Malfunction

What does this mean?

What are the Possible Causes of the DTC C0899 2017 GMC Sierra?

Battery voltage
Faulty Control Module
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC C0899 2017 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 does this mean?

Code Tech Notes

- C0899 00: Control Module Power Circuit Malfunction
- C0899 03: Control Module Power Circuit Low Voltage

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0899 2017 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.

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 $100â€“$300, while alternator replacement can range from $500â€“$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.