AutoCodes – GMC – B269A 2016 GMC Sierra

B269A 2016 GMC Sierra Code - Heater Coolant Pump Control Circuit Open

Quick Answer

The coolant heater pump is controlled by a relay. Common causes include Faulty Heater Coolant Pump, Heater Coolant Pump harness is open or shorted, Heater Coolant Pump 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: B269A 2016 GMC Sierra indicates Heater Coolant Pump Control Circuit Open.
Common causes: Common causes include Faulty Heater Coolant Pump, Heater Coolant Pump harness is open or shorted, Heater Coolant Pump 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 205

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 May 29, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B269A 2016 GMC Sierra Description

The coolant heater pump is controlled by a relay. When operating conditions exist that require coolant flow when the engine is not operating, the Heating, Ventilation, and Air Conditioning (HVAC) control module turns ON the heater coolant pump by applying ground to the relay control circuit which energizes the heater coolant pump relay.

OBDII Code B269A 2016 GMC Sierra - Heater Coolant Pump Control Circuit Open - AutoCodes.com — B269A 2016 GMC Sierra Code - Heater Coolant Pump Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC B269A 2016 GMC Sierra?

Faulty Heater Coolant Pump
Heater Coolant Pump harness is open or shorted
Heater Coolant Pump circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC B269A 2016 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 B269A 2016 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 B269A 2016 GMC Sierra code?

Need more information on how to fix the B269A 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B269A 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 B269A 2016 GMC Sierra Code

1. What are common symptoms of OBDII code B269A in a 2016 GMC Sierra related to the Heater Coolant Pump Control Circuit Open?

- Common symptoms include a lack of heat from the heater, engine overheating, and a check engine light illuminated on the dashboard.

2. What are the possible causes of OBDII code B269A in a 2016 GMC Sierra?

- The code could be triggered by a malfunctioning heater coolant pump, a damaged wiring harness, a faulty control module, or a poor electrical connection.

3. How can I diagnose the Heater Coolant Pump Control Circuit Open issue in my 2016 GMC Sierra?

- A thorough inspection of the heater coolant pump, wiring, and connections is recommended. Using a multimeter to test for continuity and voltage can help pinpoint the problem.

4. Can I still drive my 2016 GMC Sierra with the Heater Coolant Pump Control Circuit Open issue?

- It is not recommended to drive the vehicle if it is overheating or experiencing a lack of heating. Continuing to drive may cause further damage to the engine.

5. Will resetting the OBDII code B269A in my 2016 GMC Sierra fix the issue?

- Resetting the code may temporarily turn off the check engine light, but it will not solve the underlying problem causing the Heater Coolant Pump Control Circuit Open.

6. How much does it cost to repair the Heater Coolant Pump Control Circuit Open in a 2016 GMC Sierra?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve replacing the heater coolant pump, repairing wiring, or replacing the control module.

7. Can I fix the Heater Coolant Pump Control Circuit Open issue in my 2016 GMC Sierra myself?

- DIY repairs are possible if you have the necessary tools and experience working on automotive electrical systems. However, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

8. Will a faulty heater coolant pump affect the overall performance of my 2016 GMC Sierra?

- Yes, a malfunctioning heater coolant pump can lead to engine overheating, reduced cabin heating, and potential damage to other engine components if left unresolved.

9. Is the Heater Coolant Pump Control Circuit Open issue a common problem in 2016 GMC Sierra vehicles?

- While not extremely common, issues with the heater coolant pump control circuit can occur in GMC Sierra vehicles, especially as they age and components wear out.

10. How long does it typically take to repair the Heater Coolant Pump Control Circuit Open issue in a 2016 GMC Sierra?

- The repair time can vary depending on the exact cause of the problem and the availability of parts. It may take a few hours to a full day for a mechanic to diagnose and fix the issue.