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Engine-Codes – GMC – P1682 2014 GMC Sierra

P1682 2014 GMC Sierra Code - Ignition 1 Switch Circuit 2

Quick Answer

The P1682 code for a 2014 GMC Sierra refers to the Ignition 1 Switch Circuit 2. Common causes include Faulty ignition switch, Damaged or corroded wiring in the ignition circuit, Loose or disconnected connectors in the ignition system. 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
P1682 2014 GMC Sierra indicates Ignition 1 Switch Circuit 2.
Common causes
Common causes include Faulty ignition switch, Damaged or corroded wiring in the ignition circuit, Loose or disconnected connectors in the ignition system.
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 11, 2024
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Code P1682 2014 GMC Sierra Description

The P1682 code for a 2014 GMC Sierra refers to the Ignition 1 Switch Circuit 2. This code indicates a problem with the ignition switch circuit that controls the power supply to various components in the vehicle. The ignition switch is a crucial component that allows the driver to start the vehicle by providing power to the starter motor, ignition system, and other essential systems.

OBDII Code P1682 2014 GMC Sierra - Ignition 1 Switch Circuit 2
P1682 2014 GMC Sierra Code - Ignition 1 Switch Circuit 2

Common Causes of P1682 2014 GMC Sierra

  1. Faulty ignition switch.
  2. Damaged or corroded wiring in the ignition circuit.
  3. Loose or disconnected connectors in the ignition system.
  4. Malfunctioning ignition control module.

Symptoms of P1682 2014 GMC Sierra

  1. Difficulty starting the engine or intermittent starting problems.
  2. Engine stalling or shutting off unexpectedly while driving.
  3. Dashboard warning lights, such as the check engine light, illuminated.
  4. Electrical components not functioning properly, such as power windows or radio.

How to Fix P1682 2014 GMC Sierra

  1. Perform a thorough diagnostic scan to retrieve the fault codes and pinpoint the issue.
  2. Inspect the ignition switch, wiring, and connectors for any visible damage or wear.
  3. Test the ignition control module for proper functionality.
  4. Replace the faulty ignition switch, repair or replace damaged wiring and connectors.
  5. Clear the fault codes and test the vehicle to ensure the issue has been resolved.

Cost to Fix P1682 2014 GMC Sierra

The typical repair costs for addressing the P1682 code can vary depending on the specific cause of the issue and the extent of the repair work needed. On average, the cost of parts for replacing an ignition switch can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost for addressing this code could range from $150 to $500, including parts and labor. It's important to note that the actual repair costs may vary based on the location, vehicle make and model, and the repair shop's labor rates. It's advisable to obtain quotes from multiple auto repair shops to get a more accurate estimate for the repair.

What does this mean?

Tech Notes for P1682 2014 GMC Sierra

There is a Factory Service Bulletin for the following Chevrolet models:

2016-2018 Chevrolet Silverado 1500

2019 Chevrolet Silverado LD

Dead Battery / P1682 P129D P10E4 P2535 / Crank No Start

Need more information about the P1682 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 P1682 2014 GMC Sierra Code

1. What does the OBDII code P1682 mean on a 2014 GMC Sierra?

P1682 indicates an issue with the Ignition 1 Switch Circuit 2, which involves a malfunction in the electrical circuit responsible for powering the ignition system.

2. What are the common symptoms of the P1682 code in a 2014 GMC Sierra?

Symptoms may include difficulty starting the engine, a no-start condition, the engine stalling while driving, or the Check Engine Light being illuminated.

3. What causes the P1682 code on a 2014 GMC Sierra?

Common causes include a faulty ignition switch, damaged wiring or connectors in the Ignition 1 circuit, a failing Powertrain Control Module (PCM), or a blown fuse.

4. Can I drive my 2014 GMC Sierra with the P1682 code?

It is not recommended to drive with this code active, as it can lead to engine stalling or prevent the vehicle from starting, potentially leaving you stranded.

5. How can I diagnose the P1682 code on a 2014 GMC Sierra?

Begin by inspecting the ignition switch, fuses, and wiring for damage or loose connections. Use a multimeter to test circuit continuity and verify proper voltage at the ignition circuit.

6. How do I fix the P1682 code on a 2014 GMC Sierra?

Repairs may include replacing the ignition switch, repairing or replacing damaged wiring, ensuring all connectors are secure, or reprogramming/replacing the PCM if necessary.

7. Is the P1682 code on a 2014 GMC Sierra a common problem?

While not extremely common, this code can occur due to wear and tear on the ignition switch or issues with the vehicle’s electrical system over time.

8. How much does it cost to fix the P1682 code on a 2014 GMC Sierra?

Repair costs depend on the underlying issue. Replacing an ignition switch typically costs $200–$400, while PCM replacement and programming can cost $500–$1,200.

9. Can a weak battery cause the P1682 code on a 2014 GMC Sierra?

Yes, a weak or failing battery can cause electrical issues that may trigger this code, so it’s important to ensure the battery and charging system are functioning properly.

10. Do I need to clear the P1682 code after repairs on a 2014 GMC Sierra?

Yes, after completing repairs, use an OBDII scanner to clear the code and verify that it does not return. This confirms the issue has been resolved.

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