AutoCodes – GMC – B052B 2014 GMC Sierra

B052B 2014 GMC Sierra Code - Assist Step Position Sensor Supply Circuit

Quick Answer

The Assist Step Control (ASC) Module controls the running board actuators to extend or retract the running boards. Common causes include Faulty Left Side Assist Step Motor, Left Side Assist Step Motor harness is open or shorted, Left Side Assist Step 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: B052B 2014 GMC Sierra indicates Assist Step Position Sensor Supply Circuit.
Common causes: Common causes include Faulty Left Side Assist Step Motor, Left Side Assist Step Motor harness is open or shorted, Left Side Assist Step 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 157

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 18, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B052B 2014 GMC Sierra Description

The Assist Step Control (ASC) Module controls the running board actuators to extend or retract the running boards. Each actuator consists of an electric motor and a hall-effect switch. The module supplies a low reference and 10 V reference source voltage to the hall-effect switch. The assist step control module monitors the signal from the hall effect switch on the signal circuit. When the actuator shaft rotates, the hall-effect switch provides pulses to the assist step control module which uses the pulses as counts to determine the location of the assist steps. The assist step control module supplies the actuator motor with a 12 V control circuit and a ground control circuit. The assist step control module controls the direction of the actuator by changing the polarity of the control circuits.

OBDII Code B052B 2014 GMC Sierra - Assist Step Position Sensor Supply Circuit - AutoCodes.com — B052B 2014 GMC Sierra Code - Assist Step Position Sensor Supply Circuit

What does this mean?

What are the Possible Causes of the DTC B052B 2014 GMC Sierra?

Faulty Left Side Assist Step Motor
Left Side Assist Step Motor harness is open or shorted
Left Side Assist Step Motor circuit poor electrical connection
Faulty Assist Step Control (ASC) Module

How to Fix the DTC B052B 2014 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 B052B 2014 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 B052B 2014 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 B052B 2014 GMC Sierra Code

What does the OBDII code B052B mean for a 2014 GMC Sierra?

The OBDII code B052B refers to a malfunction in the Assist Step Position Sensor Supply Circuit, indicating an issue with the circuit that powers the sensor for the vehicle's assist steps.

What are common symptoms of the B052B code?

Common symptoms include inoperative assist steps, warning lights on the dashboard, and possible abnormal behavior of the step mechanism when deploying or retracting.

What could cause the B052B code to trigger?

Potential causes include a faulty assist step position sensor, a short or open circuit in the wiring, a blown fuse, or issues with the vehicle's body control module.

How can I diagnose the B052B code?

To diagnose the B052B code, start by inspecting the wiring and connectors for damage, check the assist step position sensor for proper function, and test the related fuses.

What should I check first if my Sierra shows the B052B code?

Begin by visually inspecting the wiring and connectors related to the assist step position sensor for any signs of wear, corrosion, or disconnection.

Is it safe to drive a vehicle with the B052B code?

While the vehicle is generally safe to drive, the assist steps may not function properly, which could lead to difficulties entering or exiting the vehicle; addressing the issue is advisable for safety and convenience.

What repairs are needed to fix the B052B code?

Repairs may involve replacing a faulty assist step position sensor, repairing or replacing damaged wiring or connectors, or replacing a blown fuse related to the assist step system.

Can I clear the B052B code myself?

Yes, you can use an OBDII scanner to clear the code, but it's essential to address the underlying issue before doing so to prevent the code from reappearing.

Will the B052B code affect vehicle performance?

Typically, the B052B code does not affect engine performance, but it may impact the functionality of the assist steps, which can be a convenience issue rather than a performance one.