C1251 2016 GMC Sierra Code - Lateral Acceleration Sensor Performance
Quick Answer
The Yaw Rate, Lateral Acceleration, and Longitudinal Acceleration Sensors are combined into one Multi-Axis Acceleration Sensor, internal to the Inflatable Restraint Sensing and Diagnostic Module. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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
- C1251 2016 GMC Sierra indicates Lateral Acceleration Sensor Performance.
- Common causes
- Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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.
Code C1251 2016 GMC Sierra Description
What are the Possible Causes of the DTC C1251 2016 GMC Sierra?
- Faulty Transmission Control Module (TCM)
- Transmission Control Module harness is open or shorted
- Transmission Control Module circuit poor electrical connection
- Faulty Electronic Brake Control Module (EBCM)
How to Fix the DTC C1251 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 C1251 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.
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Frequently Asked Questions about C1251 2016 GMC Sierra Code
1. What does the OBDII code C1251 mean on a 2016 GMC Sierra?
C1251 indicates a Lateral Acceleration Sensor Performance issue, meaning the sensor is not providing accurate data to the vehicle's stability control system.
2. What are the common symptoms of code C1251 in a 2016 GMC Sierra?
Symptoms may include the ABS or traction control warning light turning on, reduced stability control performance, or difficulty maintaining control during sharp turns.
3. What causes C1251 to appear on a 2016 GMC Sierra?
Common causes include a faulty lateral acceleration sensor, damaged wiring or connectors, or calibration issues with the stability control system.
4. Can I still drive my 2016 GMC Sierra with the C1251 code?
Yes, you can drive the vehicle, but it’s not recommended to ignore the issue as stability control and traction systems may not function properly, increasing the risk of losing control in certain driving conditions.
5. How do I diagnose the C1251 code on a 2016 GMC Sierra?
Start by scanning the vehicle with an OBDII scanner, inspecting the lateral acceleration sensor and its wiring for damage, and checking for loose or corroded connectors.
6. Where is the lateral acceleration sensor located in a 2016 GMC Sierra?
The lateral acceleration sensor is typically located under the center console or near the floorboard, depending on the vehicle's configuration.
7. How can I fix the C1251 code on my 2016 GMC Sierra?
Common fixes include replacing the lateral acceleration sensor, repairing or replacing damaged wiring, and recalibrating the stability control system using a scan tool.
8. How much does it cost to repair the C1251 code on a 2016 GMC Sierra?
The cost can range from $200 to $500 depending on whether the lateral acceleration sensor needs replacement or if additional wiring repairs are required.
9. Can a dead battery cause the C1251 code in a 2016 GMC Sierra?
A weak or dead battery can cause electrical issues that may trigger the C1251 code, so it’s worth checking the battery and charging system during diagnosis.
10. Do I need to recalibrate the stability control system after fixing the C1251 code on my 2016 GMC Sierra?
Yes, recalibration is often necessary after replacing the lateral acceleration sensor to ensure the stability control system operates correctly.
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