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P1AC6 GMC Code - Drive Motor 1 Control Module Crankshaft Position Sensor Circuit

Quick Answer

The P1AC6 diagnostic trouble code (DTC) for GMC vehicles specifically pertains to an issue with the Drive Motor 1 Control Module Crankshaft Position Sensor Circuit. Common causes include Damaged wiring or connectors in the crankshaft position sensor circuit, Faulty crankshaft position sensor, Malfunctioning drive motor control module. 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
P1AC6 GMC indicates Drive Motor 1 Control Module Crankshaft Position Sensor Circuit.
Common causes
Common causes include Damaged wiring or connectors in the crankshaft position sensor circuit, Faulty crankshaft position sensor, Malfunctioning drive motor control module.
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 10, 2024
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Code P1AC6 GMC Description

The P1AC6 diagnostic trouble code (DTC) for GMC vehicles specifically pertains to an issue with the Drive Motor 1 Control Module Crankshaft Position Sensor Circuit. This code indicates that there is a malfunction or abnormality detected in the circuit responsible for monitoring the crankshaft position sensor in the drive motor control module. The crankshaft position sensor is a crucial component in the vehicle's engine management system, as it provides essential data on the crankshaft's position and rotational speed to the engine control module (ECM). This information is used to determine ignition timing, fuel injection timing, and other critical engine functions.

OBDII Code P1AC6 GMC - Drive Motor 1 Control Module Crankshaft Position Sensor Circuit
P1AC6 GMC Code - Drive Motor 1 Control Module Crankshaft Position Sensor Circuit

Common Causes of P1AC6 GMC

  1. Damaged wiring or connectors in the crankshaft position sensor circuit
  2. Faulty crankshaft position sensor
  3. Malfunctioning drive motor control module
  4. Corrosion or contamination in sensor connections
  5. Electrical issues such as short circuits or open circuits

Symptoms of P1AC6 GMC

  1. Engine misfires or rough idling
  2. Stalling or hesitation during acceleration
  3. Reduced engine performance or power
  4. Illumination of the check engine light
  5. Vehicle may fail to start

How to Fix P1AC6 GMC

  1. Begin by conducting a thorough diagnosis using a scan tool to retrieve the specific trouble code and assess the condition of the Drive Motor 1 Control Module Crankshaft Position Sensor Circuit.
  2. Inspect the wiring, connectors, and components associated with the crankshaft position sensor circuit for any signs of damage, corrosion, or loose connections.
  3. Test the crankshaft position sensor to determine if it is functioning correctly. Replace the sensor if necessary.
  4. Check the drive motor control module for any faults or malfunctions. Repair or replace the module as needed.
  5. Clear the DTC and perform a test drive to verify that the issue has been resolved and that the vehicle is operating as expected.

Cost to Fix P1AC6 GMC

The typical repair costs for addressing a P1AC6 DTC related to the Drive Motor 1 Control Module Crankshaft Position Sensor Circuit can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, this type of repair may range from $200 to $500, including parts and labor. However, it's important to note that the actual costs can be higher or lower based on factors such as the location of the repair shop, the vehicle's make and model, and the complexity of the repair process. As labor rates at auto repair shops can vary widely, it's advisable to check with local shops for a more accurate estimate tailored to your specific situation.

What does this mean?

Tech Notes for P1AC6 GMC

If codes P0335 or P0336 are set, diagnose them prior to diagnosing this code.

Need more information about the P1AC6 GMC code?

Need more information on how to fix the P1AC6 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1AC6 GMC code diagnosed by a professional: Find a repair shop in your area

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 P1AC6 GMC Code

1. What are the common symptoms of OBDII code P1AC6 in a GMC vehicle?

- Common symptoms include rough engine idle, engine misfires, decreased fuel efficiency, and potential stalling of the vehicle.

2. What can cause the OBDII code P1AC6 to trigger in a GMC vehicle?

- The code P1AC6 is typically triggered by issues with the drive motor 1 control module crankshaft position sensor circuit, such as a faulty sensor or wiring issues.

3. How can I diagnose the cause of the P1AC6 code in my GMC vehicle?

- Diagnosing the P1AC6 code may require using a scan tool to retrieve more specific diagnostic trouble codes, checking the wiring and connections to the crankshaft position sensor, and testing the sensor itself for proper functionality.

4. Can a DIYer repair the OBDII code P1AC6 in a GMC vehicle?

- While some DIYers may be able to address simple wiring or connection issues related to the P1AC6 code, diagnosing and repairing more complex issues with the drive motor control module may require professional assistance.

5. Are there any tips for repairing the drive motor 1 control module crankshaft position sensor circuit related to the P1AC6 code?

- Make sure to carefully inspect the wiring and connections for any signs of damage or corrosion, and consider replacing the crankshaft position sensor if necessary to resolve the issue.

6. Will driving my GMC vehicle with the P1AC6 code present cause further damage?

- Continuing to drive with the P1AC6 code present may result in poor engine performance and potential stalling, so it is recommended to address the issue promptly to prevent further damage.

7. How much does it typically cost to repair the drive motor 1 control module crankshaft position sensor circuit issue triggering the P1AC6 code?

- The cost of repairing the P1AC6 code can vary depending on the specific cause of the issue, but it may range from a simple sensor replacement to more extensive wiring repairs, potentially costing a few hundred dollars.

8. Can resetting the OBDII code P1AC6 in a GMC vehicle make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue with the drive motor control module or crankshaft position sensor circuit is not addressed, the code is likely to reappear.

9. Is it safe to continue driving my GMC vehicle if the P1AC6 code comes on intermittently?

- It is not recommended to drive the vehicle if the P1AC6 code is intermittently coming on, as it indicates a potential issue with the drive motor control module that could lead to more serious problems if left unaddressed.

10. How long does it typically take to repair the drive motor 1 control module crankshaft position sensor circuit issue related to the P1AC6 code?

- The repair time for the P1AC6 code can vary depending on the complexity of the issue and the availability of parts, but it may take a few hours to a day for a professional technician to diagnose and resolve the problem.

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