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Engine-Codes – GMC – C1253 2018 GMC Sierra

C1253 2018 GMC Sierra Code - Longitudinal Acceleration Sensor Circuit High Voltage

Quick Answer

The C1253 diagnostic trouble code (DTC) for a 2018 GMC Sierra specifically refers to a fault in the Longitudinal Acceleration Sensor Circuit, indicating a high voltage condition. Common causes include Faulty Longitudinal Acceleration Sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connections in the sensor circuit. 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
C1253 2018 GMC Sierra indicates Longitudinal Acceleration Sensor Circuit High Voltage.
Common causes
Common causes include Faulty Longitudinal Acceleration Sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connections in the sensor circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code C1253 2018 GMC Sierra Description

The C1253 diagnostic trouble code (DTC) for a 2018 GMC Sierra specifically refers to a fault in the Longitudinal Acceleration Sensor Circuit, indicating a high voltage condition. The Longitudinal Acceleration Sensor is a crucial component of the vehicle's stability control system, which helps to monitor and adjust the vehicle's acceleration in relation to its longitudinal axis. When the sensor detects a high voltage signal, it means that there is an issue with the circuit that could potentially affect the accuracy of the sensor's readings and compromise the vehicle's stability control system.

OBDII Code C1253 2018 GMC Sierra - Longitudinal Acceleration Sensor Circuit High Voltage
C1253 2018 GMC Sierra Code - Longitudinal Acceleration Sensor Circuit High Voltage

Common Causes of C1253 2018 GMC Sierra

  1. Faulty Longitudinal Acceleration Sensor.
  2. Damaged wiring or connectors in the sensor circuit.
  3. Corrosion or poor connections in the sensor circuit.
  4. Issues with the vehicle's ECU or stability control module.
  5. Environmental factors such as water intrusion or debris affecting the sensor.

Symptoms of C1253 2018 GMC Sierra

  1. Illumination of the traction control or stability control warning light on the dashboard.
  2. Reduced traction or stability while driving, especially during acceleration or cornering.
  3. Increased stopping distance or difficulty in maintaining control during braking.
  4. Unusual or erratic behavior of the vehicle's stability control system, such as unexpected interventions.

How to Fix C1253 2018 GMC Sierra

  1. Begin by conducting a thorough visual inspection of the Longitudinal Acceleration Sensor and its wiring harness to check for any visible damage or corrosion.
  2. Use a multimeter to test the sensor's voltage output and compare it to the manufacturer's specifications to determine if it is within the acceptable range.
  3. If the sensor is found to be faulty, replace it with a new OEM sensor and ensure proper calibration according to the manufacturer's instructions.
  4. Check and repair any damaged wiring or connectors in the sensor circuit to ensure a reliable connection.
  5. Clear the DTC from the vehicle's ECU using a diagnostic scan tool and perform a test drive to verify that the issue has been resolved.

Cost to Fix C1253 2018 GMC Sierra

The cost of repairing a Longitudinal Acceleration Sensor Circuit high voltage issue on a 2018 GMC Sierra can vary depending on the specific cause of the problem and the cost of parts and labor in your area. On average, the cost of replacing a Longitudinal Acceleration Sensor can range from $150 to $300, while the cost of labor for diagnosis and repair can range from $100 to $200. Keep in mind that these are rough estimates, and actual costs may vary based on your location and the specific circumstances of your vehicle. It is recommended to consult with a qualified mechanic or dealership for a more accurate cost estimate.

What does this mean?

Tech Notes for C1253 2018 GMC Sierra









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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 C1253 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code C1253 in a 2018 GMC Sierra?

- Common symptoms include the ABS warning light illuminating on the dashboard, stability control issues, and potentially harsh braking.

2. What does the OBDII code C1253 "Longitudinal Acceleration Sensor Circuit High Voltage" mean for a 2018 GMC Sierra?

- This code indicates that the longitudinal acceleration sensor circuit is detecting a higher voltage than normal, signaling a potential issue with the sensor or its circuit.

3. What are possible causes of OBDII code C1253 in a 2018 GMC Sierra?

- Potential causes include a faulty longitudinal acceleration sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor's calibration.

4. How can I diagnose the OBDII code C1253 in my 2018 GMC Sierra?

- Diagnosis typically involves inspecting the longitudinal acceleration sensor, checking its wiring and connectors for damage or corrosion, and testing the sensor's output voltage.

5. Is it safe to drive my 2018 GMC Sierra with OBDII code C1253 present?

- It is generally not recommended to drive the vehicle with this code, as it may affect the stability control system's functionality and compromise safety.

6. Can I reset the OBDII code C1253 in my 2018 GMC Sierra by disconnecting the battery?

- While disconnecting the battery may clear the code temporarily, it is important to address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it typically cost to repair OBDII code C1253 in a 2018 GMC Sierra?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve sensor replacement, wiring repairs, or recalibration, with costs ranging from $100 to $500 or more.

8. Can a DIY enthusiast fix OBDII code C1253 in a 2018 GMC Sierra?

- Depending on the skill level and tools available, some DIY enthusiasts may be able to address this issue by replacing the sensor or repairing the wiring. However, professional diagnosis is recommended.

9. Will OBDII code C1253 affect the vehicle's performance in a 2018 GMC Sierra?

- While the code may not directly impact engine performance, it can affect the vehicle's stability control system and ABS functionality, potentially compromising overall driving safety.

10. How can I prevent OBDII code C1253 from appearing in my 2018 GMC Sierra in the future?

- Regular maintenance, including checking the sensor's condition and ensuring proper wiring connections, can help prevent the recurrence of this code.

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