AutoCodes – GMC – B0210 GMC

B0210 GMC Code - Rear Blower Motor Speed Low

Quick Answer

The Auxiliary Blower Motor Control Module is an interface between the Heating, Ventilation, and Air Conditioning (HVAC) Control Module and the Auxiliary (Rear) Blower Motor. Common causes include Faulty Auxiliary (Rear) Blower Motor, Auxiliary (Rear) Blower Motor harness is open or shorted, Auxiliary (Rear) Blower Motor 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: B0210 GMC indicates Rear Blower Motor Speed Low.
Common causes: Common causes include Faulty Auxiliary (Rear) Blower Motor, Auxiliary (Rear) Blower Motor harness is open or shorted, Auxiliary (Rear) Blower Motor 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 936

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 Mar 10, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0210 GMC Description

The Auxiliary Blower Motor Control Module is an interface between the Heating, Ventilation, and Air Conditioning (HVAC) Control Module and the Auxiliary (Rear) Blower Motor. The auxiliary blower motor control module has 5 circuits: a B+ input, ground, a control signal from the HVAC module, a B+ output and a low side Pulse Width Modulation (PWM) control to the Auxiliary (Rear) Blower Motor. The HVAC control module provides a low side (PWM) signal to the auxiliary blower motor control module in order to request the auxiliary blower motor speed. The auxiliary blower motor control module grounds the blower motor using a low side PWM signal in order to vary the auxiliary blower motor speed.

OBDII Code B0210 GMC - Rear Blower Motor Speed Low - AutoCodes.com — B0210 GMC Code - Rear Blower Motor Speed Low

What does this mean?

What are the Possible Causes of the DTC B0210 GMC?

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

How to Fix the DTC B0210 GMC?

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 B0210 GMC 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.

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Need Help with the 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 B0210 GMC Code

1. What are the common symptoms of OBDII code B0210 GMC (Rear Blower Motor Speed Low)?

- Common symptoms include reduced airflow from the rear vents, irregular blower motor speed, and potential issues with the rear climate control system.

2. What are the typical causes of OBDII code B0210 GMC?

- The code B0210 GMC is usually triggered by a faulty rear blower motor, a malfunctioning blower motor resistor, wiring issues, or a problem with the rear blower motor control module.

3. How can I diagnose the cause of OBDII code B0210 GMC?

- To diagnose the issue, you can start by checking the rear blower motor and its connections, testing the blower motor resistor for proper functionality, and inspecting the wiring for any visible damage.

4. What are some repair tips for resolving OBDII code B0210 GMC?

- Repair tips include replacing the rear blower motor if it is faulty, testing and replacing the blower motor resistor if needed, repairing any damaged wiring, and resetting the trouble code after repairs are completed.

5. Can I continue driving my GMC with OBDII code B0210 (Rear Blower Motor Speed Low)?

- It is not recommended to ignore OBDII code B0210, as it can affect the functionality of your rear blower motor and climate control system. It is best to address the issue promptly to avoid further damage.

6. How much does it typically cost to fix OBDII code B0210 GMC?

- The cost of fixing OBDII code B0210 can vary depending on the specific cause of the issue and the labor rates in your area. Costs may include parts such as a new blower motor or blower motor resistor, as well as labor for diagnosis and repairs.

7. Is OBDII code B0210 GMC a common issue in GMC vehicles?

- OBDII code B0210 (Rear Blower Motor Speed Low) is a relatively common issue in GMC vehicles that can arise due to wear and tear on the blower motor components or electrical issues in the climate control system.

8. Can a DIY enthusiast repair OBDII code B0210 GMC at home?

- Depending on your level of expertise, you may be able to diagnose and repair OBDII code B0210 GMC at home by following repair guides, using proper tools, and ensuring safety precautions are taken.

9. How long does it typically take to fix OBDII code B0210 GMC?

- The time it takes to fix OBDII code B0210 GMC can vary based on the specific cause of the issue, the availability of parts, and the expertise of the person performing the repairs. It may take a few hours to a day to diagnose and fix the problem.

10. Are there any preventive measures to avoid OBDII code B0210 GMC in the future?

- To prevent OBDII code B0210 GMC from occurring in the future, it is recommended to perform regular maintenance on your vehicle's climate control system, including checking the condition of the blower motor and its components.