AutoCodes – GMC – B0283 2015 GMC Sierra

B0283 2015 GMC Sierra Code - Electric Rear Defrost Circuit Malfunction

Quick Answer

When the rear heated rear window switch is pressed and the engine is running, the rear window defogger grid will activate and will turn off automatically depending upon the vehicle's speed. Common causes include Faulty Rear Defogger Relay, Rear Defogger Relay harness is open or shorted, Rear Defogger Relay circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B0283 2015 GMC Sierra indicates Electric Rear Defrost Circuit Malfunction.
Common causes: Common causes include Faulty Rear Defogger Relay, Rear Defogger Relay harness is open or shorted, Rear Defogger Relay circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 249

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 12, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0283 2015 GMC Sierra Description

When the rear heated rear window switch is pressed and the engine is running, the rear window defogger grid will activate and will turn off automatically depending upon the vehicle's speed. The Heating, Ventilation, and Air Conditioning (HVAC) Control Module monitors the voltage level on the supply voltage circuit of the rear window defogger. The HVAC tests the supply voltage circuit of the rear window defogger every 160 milliseconds. With the rear window defogger inactive, the supply voltage circuit of the rear window defogger will have no voltage present. With the rear window defogger active, the supply voltage circuit of the rear window defogger will be near the system voltage.

OBDII Code B0283 2015 GMC Sierra - Electric Rear Defrost Circuit Malfunction - AutoCodes.com — B0283 2015 GMC Sierra Code - Electric Rear Defrost Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC B0283 2015 GMC Sierra?

Faulty Rear Defogger Relay
Rear Defogger Relay harness is open or shorted
Rear Defogger Relay circuit poor electrical connection
Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

How to Fix the DTC B0283 2015 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 B0283 2015 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 B0283 2015 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 B0283 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code B0283 in a 2015 GMC Sierra?

The common symptoms of OBDII code B0283 in a 2015 GMC Sierra include the rear defrost not working, the rear defrost indicator light staying on, or the rear defrost operating intermittently.

2. What causes the Electric Rear Defrost Circuit Malfunction in a 2015 GMC Sierra?

The Electric Rear Defrost Circuit Malfunction (OBDII code B0283) in a 2015 GMC Sierra is typically caused by a fault in the rear defrost circuit, a damaged rear defrost grid, a faulty defrost switch, or a wiring issue.

3. How can I diagnose the Electric Rear Defrost Circuit Malfunction in my 2015 GMC Sierra?

To diagnose the Electric Rear Defrost Circuit Malfunction, you can use an OBDII scanner to retrieve the specific trouble code (B0283), visually inspect the rear defrost grid for damage, check the defrost switch for proper operation, and test the wiring for continuity.

4. Can I still drive my 2015 GMC Sierra with OBDII code B0283?

Yes, you can still drive your 2015 GMC Sierra with OBDII code B0283 (Electric Rear Defrost Circuit Malfunction), but it is recommended to address the issue promptly to ensure the rear defrost system functions correctly, especially in cold or rainy weather.

5. How can I repair the Electric Rear Defrost Circuit Malfunction in my 2015 GMC Sierra?

To repair the Electric Rear Defrost Circuit Malfunction, you may need to repair or replace the damaged rear defrost grid, troubleshoot and fix any wiring issues, replace the faulty defrost switch, or seek professional assistance for a comprehensive diagnosis and repair.

6. Is OBDII code B0283 in a 2015 GMC Sierra a serious issue?

While OBDII code B0283 (Electric Rear Defrost Circuit Malfunction) in a 2015 GMC Sierra may not affect the overall drivability of the vehicle, it is essential to address the issue to ensure the proper functioning of the rear defrost system, especially for visibility and safety reasons.

7. Can I reset OBDII code B0283 in my 2015 GMC Sierra without repairing the issue?

Resetting OBDII code B0283 in a 2015 GMC Sierra without addressing the underlying cause (Electric Rear Defrost Circuit Malfunction) may temporarily turn off the check engine light, but the code is likely to reappear until the root problem is fixed.

8. Are there any DIY tips for troubleshooting OBDII code B0283 in a 2015 GMC Sierra?

Some DIY tips for troubleshooting OBDII code B0283 include visually inspecting the rear defrost grid for damage, checking the defrost switch for proper operation, testing the wiring connections, and ensuring the rear defrost system is receiving power.

9. How much does it cost to repair OBDII code B0283 in a 2015 GMC Sierra?

The cost to repair OBDII code B0283 (Electric Rear Defrost Circuit Malfunction) in a 2015 GMC Sierra can vary depending on the specific cause of the issue, the parts needed for repair or replacement, and whether you choose to do the repairs yourself or seek professional help.

10. Can extreme weather conditions trigger OBDII code B0283 in a 2015 GMC Sierra?

Extreme weather conditions, such as freezing temperatures or heavy snow, can potentially exacerbate issues related to the Electric Rear Defrost Circuit Malfunction (OBDII code B0283) in a 2015 GMC Sierra by putting additional strain on the rear defrost system components.