P162C 2018 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 2018 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.
Code P162C 2018 GMC Sierra Description
What are the Possible Causes of the DTC P162C 2018 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 2018 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 2018 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 2018 GMC Sierra code?
Need more information on how to fix the P162C 2018 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P162C 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P162C 2018 GMC Sierra Code
1. What does the OBDII code P162C mean on a 2018 GMC Sierra?
P162C indicates an issue with the Vehicle Speed Limiting/Warning Switch Circuit, which is responsible for monitoring or controlling the vehicle's speed limiter functions.
2. What are the common symptoms of code P162C in a 2018 GMC Sierra?
Symptoms may include the activation of the check engine light, reduced engine performance, inability to exceed a certain speed, or erratic speed limiter behavior.
3. What causes the P162C code to appear?
Common causes include a faulty speed limiting switch, damaged wiring or connectors in the circuit, a malfunctioning ECM (Engine Control Module), or software issues.
4. How can I diagnose code P162C on my GMC Sierra?
Start by scanning the vehicle with an OBDII scanner to confirm the code, then visually inspect the wiring and connectors for damage. Use a multimeter to test the speed limiting switch and circuit for proper operation.
5. Can I drive my 2018 GMC Sierra with the P162C code active?
Driving is possible, but it may be limited by reduced speed or performance. It’s best to address the issue promptly to avoid further complications.
6. How do I fix the P162C code on a GMC Sierra?
Repairs may include replacing a faulty speed limiting switch, repairing damaged wiring, updating the ECM software, or replacing the ECM if necessary.
7. Is the P162C code related to my vehicle’s speed limiter settings?
Yes, the code is directly related to the system that controls or monitors the speed limiter, which may be malfunctioning or not communicating properly.
8. How much does it cost to fix the P162C code on a GMC Sierra?
Repair costs vary depending on the cause but can range from $100 for minor wiring repairs to over $1,000 if ECM replacement is required.
9. Can a software update fix the P162C code in my 2018 GMC Sierra?
Yes, if the issue is related to outdated or corrupted ECM software, a dealer-performed software update may resolve the problem.
10. What tools are needed to troubleshoot the P162C code?
You’ll need an OBDII scanner, a multimeter for circuit testing, and possibly access to GMC-specific diagnostic software for deeper analysis.
Discuss the causes and fixes for P162C 2018 GMC Sierra OBDII Code
Code P162C 2018 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
