B051A 2018 GMC Sierra Code - Left Side Assist Step Motor Control 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
- B051A 2018 GMC Sierra indicates Left Side Assist Step Motor Control 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.
Code B051A 2018 GMC Sierra Description
What are the Possible Causes of the DTC B051A 2018 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 B051A 2018 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.
Code Tech Notes
B051A:01 Left Side Assist Step Motor Control Circuit Short to Battery
B051A:02 Left Side Assist Step Motor Control Circuit Short to Ground
B051A:04 Left Side Assist Step Motor Control Circuit Open Circuit
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B051A 2018 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.
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Frequently Asked Questions about B051A 2018 GMC Sierra Code
1. What are the common symptoms of OBDII code B051A in a 2018 GMC Sierra related to the Left Side Assist Step Motor Control Circuit?
- Common symptoms include the left side assist step not deploying or retracting properly, intermittent operation of the assist step, or complete failure of the step to function.
2. What are some possible causes of OBDII code B051A in a 2018 GMC Sierra?
- The code B051A in a 2018 GMC Sierra may be triggered by issues such as a faulty left side assist step motor, damaged wiring or connectors in the control circuit, or a malfunctioning control module.
3. How can I diagnose the issue causing OBDII code B051A in my 2018 GMC Sierra?
- To diagnose the issue, you can use a diagnostic scanner to read the specific fault codes, inspect the wiring and connectors related to the left side assist step motor, and perform a thorough visual inspection of the step mechanism.
4. What are some repair tips for resolving OBDII code B051A in a 2018 GMC Sierra?
- Repair tips may include checking and repairing damaged wiring or connectors, replacing the left side assist step motor if it is faulty, and resetting the control module after making necessary repairs.
5. Can I fix OBDII code B051A in my 2018 GMC Sierra on my own, or do I need professional help?
- Depending on your automotive repair skills and tools available, you may be able to fix the issue causing code B051A on your own. However, if you are unsure or uncomfortable with electrical components, it is recommended to seek professional help.
6. Is it safe to drive my 2018 GMC Sierra with OBDII code B051A related to the Left Side Assist Step Motor Control Circuit?
- It is generally safe to drive the vehicle with this code, but you may experience inconvenience due to the malfunctioning left side assist step. It is recommended to address the issue promptly to restore the proper operation of the assist step.
7. How much does it typically cost to repair OBDII code B051A in a 2018 GMC Sierra at a dealership or repair shop?
- Repair costs for OBDII code B051A can vary depending on the exact cause of the issue and labor rates in your area. It is advisable to obtain quotes from different sources to compare prices.
8. Will resetting the OBDII system clear the B051A code in my 2018 GMC Sierra?
- While resetting the OBDII system may temporarily clear the code, it is important to diagnose and address the root cause of the issue triggering the code to prevent it from reoccurring.
9. Are there any recalls or technical service bulletins related to OBDII code B051A in a 2018 GMC Sierra?
- It is recommended to check with a GMC dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to OBDII code B051A in your specific vehicle model.
10. Can extreme weather conditions affect the operation of the Left Side Assist Step Motor Control Circuit in a 2018 GMC Sierra?
- Extreme weather conditions, such as extreme cold or moisture, can potentially impact the operation of the left side assist step motor control circuit in a 2018 GMC Sierra, leading to issues that trigger OBDII code B051A. Regular maintenance and inspection can help prevent weather-related problems.
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