AutoCodesGMC – P061C GMC

P061C GMC Code - Control Module Engine Speed System Circuitry Performance

Quick Answer

The Power Take-Off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. Common causes include Faulty Power Take-Off Control Module, Power Take-Off Control Module harness is open or shorted, Power Take-Off 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
P061C GMC indicates Control Module Engine Speed System Circuitry Performance.
Common causes
Common causes include Faulty Power Take-Off Control Module, Power Take-Off Control Module harness is open or shorted, Power Take-Off 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 488
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 15, 2022
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Code P061C GMC Description

The Power Take-Off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The Engine Control Module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off control module sends a serial data message to the ECM requesting engine speeds, in accordance to signals from the PTO switch or remote.
OBDII Code P061C GMC - Control Module Engine Speed System Circuitry Performance - AutoCodes.com
P061C GMC Code - Control Module Engine Speed System Circuitry Performance

What are the Possible Causes of the DTC P061C GMC?

  • Faulty Power Take-Off Control Module
  • Power Take-Off Control Module harness is open or shorted
  • Power Take-Off Control Module circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P061C GMC?

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 P061C GMC 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 P061C GMC code?

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Information for Specific GMC Models

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 P061C GMC Code

1. What does the OBDII code P061C mean on a GMC vehicle?

P061C indicates an issue with the engine control module (ECM) related to the engine speed system circuitry performance, often involving communication or processing errors.

2. What are common symptoms of the P061C code in a GMC?

Symptoms may include poor engine performance, stalling, reduced power mode (limp mode), hesitation during acceleration, or an illuminated check engine light.

3. What causes the P061C code to trigger?

Common causes include a faulty ECM, damaged wiring or connectors in the engine speed circuitry, issues with the crankshaft position sensor, or software glitches in the ECM.

4. Can I drive my GMC with a P061C code?

Driving with this code is not recommended as it may cause reduced engine performance and could lead to further damage if not addressed promptly.

5. How do I diagnose the P061C code on a GMC?

Diagnosis typically involves scanning for additional codes, inspecting wiring and connectors in the engine speed circuitry, testing the crankshaft position sensor, and verifying ECM functionality.

6. How is the P061C code fixed on a GMC?

Repairs may include replacing or repairing damaged wiring or connectors, replacing a faulty crankshaft position sensor, updating or reprogramming the ECM, or replacing the ECM if necessary.

7. What tools are needed to troubleshoot the P061C code?

A diagnostic scan tool, multimeter, and access to the vehicle’s wiring diagrams are essential for accurately diagnosing and repairing this code.

8. Can a software update fix the P061C code on a GMC?

Yes, if the issue is caused by outdated or corrupted ECM software, a software update or reprogramming may resolve the problem.

9. What should I check first when troubleshooting a P061C code?

Start by inspecting the wiring and connectors associated with the engine speed circuitry for damage, corrosion, or loose connections.

10. How much does it cost to repair a P061C code on a GMC?

Repair costs vary depending on the root cause, ranging from $100 for simple wiring repairs to $1,000 or more if the ECM needs replacement.

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