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Engine-Codes – GMC – P1516 2018 GMC Sierra

P1516 2018 GMC Sierra Code - Throttle Actuator Control Module Throttle Actuator Position Performance

Quick Answer

The P1516 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Throttle Actuator Control Module Throttle Actuator Position Performance. Common causes include Faulty throttle actuator control module, Malfunctioning throttle actuator, Wiring or connection issues. 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
P1516 2018 GMC Sierra indicates Throttle Actuator Control Module Throttle Actuator Position Performance.
Common causes
Common causes include Faulty throttle actuator control module, Malfunctioning throttle actuator, Wiring or connection issues.
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 15, 2024
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Code P1516 2018 GMC Sierra Description

The P1516 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Throttle Actuator Control Module Throttle Actuator Position Performance. This code indicates that the Engine Control Module (ECM) has detected an issue with the throttle actuator control system's performance. The throttle actuator control module is responsible for controlling the throttle plate's position based on driver input and other factors. When the ECM detects that the actual position of the throttle actuator does not match the desired position, it triggers the P1516 code.

OBDII Code P1516 2018 GMC Sierra - Throttle Actuator Control Module Throttle Actuator Position Performance
P1516 2018 GMC Sierra Code - Throttle Actuator Control Module Throttle Actuator Position Performance

Common Causes of P1516 2018 GMC Sierra

  1. Faulty throttle actuator control module
  2. Malfunctioning throttle actuator
  3. Wiring or connection issues
  4. ECM software or hardware problems
  5. Environmental factors such as moisture or corrosion

Symptoms of P1516 2018 GMC Sierra

  1. Reduced engine power
  2. Rough idling or stalling
  3. Poor acceleration
  4. Check Engine Light illuminated
  5. Limp mode activation

How to Fix P1516 2018 GMC Sierra

  1. Diagnose the specific cause of the P1516 code using a scan tool to pinpoint the issue accurately.
  2. Inspect the throttle actuator control module, throttle actuator, wiring, and connections for any signs of damage or malfunction.
  3. Replace the faulty component, whether it be the throttle actuator control module, throttle actuator, or damaged wiring.
  4. Clear the DTC and perform a throttle body relearn procedure to recalibrate the throttle actuator position.
  5. Test drive the vehicle to ensure that the issue has been resolved and that the throttle actuator is functioning correctly.

Cost to Fix P1516 2018 GMC Sierra

The typical repair costs for addressing a P1516 code on a 2018 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty throttle actuator control module or throttle actuator can range from $200 to $600, including parts and labor. However, additional diagnostic time and labor costs may apply, with total repair costs potentially exceeding $800 in some cases. It is advisable to consult with a trusted auto repair shop to obtain a precise estimate based on your vehicle's make and model, as well as local labor rates. Keep in mind that rates can vary significantly based on location, so it's essential to research and compare prices to ensure a fair and accurate repair cost.

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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 P1516 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P1516 in a 2018 GMC Sierra related to the Throttle Actuator Control Module Throttle Actuator Position Performance?

- Common symptoms include reduced engine power, illuminated Check Engine Light, and difficulty accelerating.

2. What are the possible causes of OBDII code P1516 in a 2018 GMC Sierra?

- Possible causes include a faulty throttle body, damaged wiring or connectors, software issues, or a malfunctioning throttle actuator control module.

3. How can I diagnose the issue related to OBDII code P1516 in my 2018 GMC Sierra?

- Diagnosis typically involves scanning the vehicle's onboard diagnostic system for the specific trouble code, inspecting the throttle body and related components for damage, and testing the throttle actuator control module.

4. Can I continue driving my 2018 GMC Sierra with OBDII code P1516?

- It is not recommended to continue driving with this code as it can lead to reduced engine performance and potentially unsafe driving conditions.

5. How can I repair OBDII code P1516 in my 2018 GMC Sierra?

- Repair options may include cleaning or replacing the throttle body, repairing damaged wiring or connectors, reprogramming the control module, or replacing the throttle actuator control module.

6. Is it possible to clear the OBDII code P1516 in a 2018 GMC Sierra without addressing the underlying issue?

- Clearing the code without fixing the underlying issue may temporarily turn off the Check Engine Light, but the problem will likely reoccur, and the vehicle may continue to experience performance issues.

7. Can a DIY enthusiast fix OBDII code P1516 in a 2018 GMC Sierra?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this code by following repair guides and using diagnostic equipment.

8. How much does it typically cost to repair OBDII code P1516 in a 2018 GMC Sierra at a professional auto repair shop?

- Repair costs can vary based on the specific issue, labor rates, and parts needed, but the total repair cost may range from a few hundred to over a thousand dollars.

9. Are there any preventive maintenance measures to avoid OBDII code P1516 in a 2018 GMC Sierra?

- Regularly inspecting and cleaning the throttle body, checking for damaged wiring, and ensuring proper maintenance of the throttle actuator control module can help prevent this issue.

10. How long does it usually take to repair OBDII code P1516 in a 2018 GMC Sierra?

- The repair time can vary depending on the extent of the issue and the availability of parts, but it may take a few hours to a full day for a professional mechanic to diagnose and fix the problem.

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