AutoCodesGMC – P18CB 2014 GMC Sierra

P18CB 2014 GMC Sierra Code - Parking Assist System Performance

Quick Answer

The Parking Assist Control Module communicates with the Engine Control Module (ECM) via serial data. Common causes include Faulty Parking Assist Control Module, Parking Assist Control Module harness is open or shorted, Parking Assist Control Module 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
P18CB 2014 GMC Sierra indicates Parking Assist System Performance.
Common causes
Common causes include Faulty Parking Assist Control Module, Parking Assist Control Module harness is open or shorted, Parking Assist Control Module 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 383
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 08, 2022
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Code P18CB 2014 GMC Sierra Description

The Parking Assist Control Module communicates with the Engine Control Module (ECM) via serial data. The Diagnostic Trouble Code (DTC) will be set if the Engine Control Module an invalid data is received from Parking Assist Control Module
OBDII Code P18CB 2014 GMC Sierra - Parking Assist System Performance - AutoCodes.com
P18CB 2014 GMC Sierra Code - Parking Assist System Performance

What are the Possible Causes of the DTC P18CB 2014 GMC Sierra?

  • Faulty Parking Assist Control Module
  • Parking Assist Control Module harness is open or shorted
  • Parking Assist Control Module circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P18CB 2014 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 P18CB 2014 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 P18CB 2014 GMC Sierra code?

Need more information on how to fix the P18CB 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the 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 P18CB 2014 GMC Sierra Code

What does the OBDII code P18CB mean in a 2014 GMC Sierra?

The code P18CB indicates a performance issue with the Parking Assist System, typically caused by sensor or module malfunctions.

What are the symptoms of code P18CB in a 2014 GMC Sierra?

Symptoms include malfunctioning parking sensors, inaccurate distance warnings, or the Parking Assist System not activating properly.

What causes the code P18CB in the Parking Assist System?

Common causes include faulty parking sensors, wiring issues, a damaged control module, or software glitches.

Can a dirty sensor cause the P18CB code?

Yes, dirt, debris, or ice on the parking sensors can interfere with their performance and trigger this code.

How can I diagnose the P18CB code in my GMC Sierra?

Start by inspecting the parking sensors for damage or obstructions, followed by checking the wiring harness and connections for faults.

Can I fix the P18CB code myself?

If the issue is caused by dirty or obstructed sensors, cleaning them may resolve the problem. For wiring or module issues, professional diagnosis may be required.

How much does it cost to fix the P18CB code in a GMC Sierra?

Repair costs can vary, ranging from $50 for cleaning sensors to over $500 for replacing damaged modules or wiring.

Is the P18CB code a serious issue?

While it doesn’t affect drivability, it can impair parking assistance, increasing the risk of minor collisions during parking maneuvers.

Will clearing the P18CB code fix the problem?

Clearing the code without addressing the underlying issue will likely result in the code returning.

Can software updates fix the P18CB code?

In some cases, a software update for the Parking Assist System may resolve performance issues associated with this code.

Discuss the causes and fixes for P18CB 2014 GMC Sierra OBDII Code

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