AutoCodes – GMC – P162C 2016 GMC Sierra

P162C 2016 GMC Sierra Code - Vehicle Speed Limiting/Warning Switch Circuit

Quick Answer

The Cruise Control Switch is an input to the Body Control Module (BCM). Common causes include Faulty Cruise Control Switch, Cruise Control Switch harness is open or shorted, Cruise Control Switch 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: P162C 2016 GMC Sierra indicates Vehicle Speed Limiting/Warning Switch Circuit.
Common causes: Common causes include Faulty Cruise Control Switch, Cruise Control Switch harness is open or shorted, Cruise Control Switch 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.

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Code Popularity 158

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P162C 2016 GMC Sierra Description

The Cruise Control Switch is an input to the Body Control Module (BCM). The BCM monitors the cruise control on/off, set/coast, resume/accelerate and cancel switches via the cruise control switch signal circuit in order to detect when the driver has requested to perform a cruise control function. The BCM detects a specific voltage signal on the cruise control switch signal circuit when a switch is applied. The Engine Control Module (ECM) receives the requested cruise control switch function from the BCM via a serial data message. The Diagnostic Trouble Code (DTC) will be set when the ECM is unable to determine the state of the vehicle speed limiting switch.

OBDII Code P162C 2016 GMC Sierra - Vehicle Speed Limiting/Warning Switch Circuit - AutoCodes.com — P162C 2016 GMC Sierra Code - Vehicle Speed Limiting/Warning Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P162C 2016 GMC Sierra?

Faulty Cruise Control Switch
Cruise Control Switch harness is open or shorted
Cruise Control Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC P162C 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 P162C 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.

Need more information about the P162C 2016 GMC Sierra code?

Need more information on how to fix the P162C 2016 GMC Sierra code? Get Access to Factory Service Manuals

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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 P162C 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P162C in a 2016 GMC Sierra?

- Common symptoms include the vehicle speed being limited, a warning message displayed on the dashboard, and the inability to accelerate beyond a certain speed.

2. What causes the OBDII code P162C in a 2016 GMC Sierra?

- This code is typically triggered by a fault in the vehicle speed limiting/warning switch circuit, which can be caused by wiring issues, a faulty switch, or a malfunctioning control module.

3. How can I diagnose the vehicle speed limiting/ warning switch circuit issue in my 2016 GMC Sierra?

- You can start by checking the wiring connections, inspecting the switch for any visible damage, and using a diagnostic scanner to pinpoint the exact location of the fault.

4. Is it safe to continue driving my 2016 GMC Sierra with OBDII code P162C active?

- It is not recommended to drive the vehicle with this code active, as the speed limitation and warning message can affect the vehicle's performance and safety.

5. Can I reset the OBDII code P162C in my 2016 GMC Sierra myself?

- While you can clear the code using an OBDII scanner, it is important to diagnose and fix the underlying issue causing the code to prevent it from reoccurring.

6. How much does it typically cost to repair OBDII code P162C in a 2016 GMC Sierra?

- The cost of repair can vary depending on the root cause of the issue, but it may involve replacing a faulty switch, repairing wiring, or reprogramming the control module, with costs ranging from $100 to $500 or more.

7. Can a DIY enthusiast fix the vehicle speed limiting/ warning switch circuit issue in a 2016 GMC Sierra?

- Depending on the individual's skill level and access to tools, DIY enthusiasts may be able to address simple wiring issues or switch replacements, but more complex repairs may require professional assistance.

8. Will OBDII code P162C cause my 2016 GMC Sierra to fail a state emissions test?

- Yes, this code can trigger a check engine light, which will likely result in a failed emissions test until the issue is resolved and the code is cleared.

9. How long does it typically take to repair OBDII code P162C in a 2016 GMC Sierra?

- The repair time can vary based on the complexity of the issue, but most cases can be resolved within a few hours to a day by a qualified mechanic.

10. Are there any recalls or technical service bulletins related to OBDII code P162C in a 2016 GMC Sierra?

- It is advisable to check with your local GMC dealership or online resources to see if there are any recalls or technical service bulletins related to this specific OBDII code for your vehicle.