AutoCodes – GMC – P1A75 GMC

P1A75 GMC Code - Starter/Generator Control Module Coolant Temperature Sensor 2 Performance

Quick Answer

The Starter/Generator Control Module (SGCM) monitors its internal fluid temperature sensors to control the SGCM coolant pump and SGCM cooling fan. Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module (SGCM) harness is open or shorted, Starter/Generator Control Module (SGCM) 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: P1A75 GMC indicates Starter/Generator Control Module Coolant Temperature Sensor 2 Performance.
Common causes: Common causes include Faulty Starter/Generator Control Module (SGCM), Starter/Generator Control Module (SGCM) harness is open or shorted, Starter/Generator Control Module (SGCM) 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 852

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 Feb 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A75 GMC Description

The Starter/Generator Control Module (SGCM) monitors its internal fluid temperature sensors to control the SGCM coolant pump and SGCM cooling fan. The internal fluid temperature sensors of the SGCM are thermistors and are not serviceable. When the internal fluid temperatures are cold, the resistances of the sensors are high and the voltage signals are high. When the internal fluid temperatures are hot, the resistances of the sensors are low and the voltage signals are low. The input parameters are not displayed on the scan tool.

OBDII Code P1A75 GMC - Starter/Generator Control Module Coolant Temperature Sensor 2 Performance - AutoCodes.com — P1A75 GMC Code - Starter/Generator Control Module Coolant Temperature Sensor 2 Performance

What does this mean?

What are the Possible Causes of the DTC P1A75 GMC?

Faulty Starter/Generator Control Module (SGCM)
Starter/Generator Control Module (SGCM) harness is open or shorted
Starter/Generator Control Module (SGCM) circuit poor electrical connection

How to Fix the DTC P1A75 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 P1A75 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 P1A75 GMC code?

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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 P1A75 GMC Code

1. What are common symptoms of OBDII code P1A75 GMC related to the Starter/Generator Control Module Coolant Temperature Sensor 2 Performance?

- Common symptoms include engine overheating, poor fuel efficiency, and rough idling.

2. What are the possible causes of OBDII code P1A75 GMC for the Starter/Generator Control Module Coolant Temperature Sensor 2 Performance?

- Possible causes include a faulty coolant temperature sensor, wiring issues, or a malfunctioning starter/generator control module.

3. How can I diagnose the OBDII code P1A75 GMC for the Starter/Generator Control Module Coolant Temperature Sensor 2 Performance?

- Diagnosis typically involves using an OBDII scanner to read the code, checking the coolant temperature sensor readings, and inspecting the wiring for any damage.

4. Can I still drive my vehicle with the OBDII code P1A75 GMC present?

- It is not recommended to drive your vehicle with this code present, as it can lead to further damage and potential safety hazards.

5. What are some repair tips for fixing OBDII code P1A75 GMC related to the Starter/Generator Control Module Coolant Temperature Sensor 2 Performance?

- Repair tips include replacing the faulty coolant temperature sensor, repairing any damaged wiring, and ensuring proper connection of the control module.

6. Is it possible to reset the OBDII code P1A75 GMC without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is important to address the root cause to prevent the code from reoccurring.

7. How much does it typically cost to repair OBDII code P1A75 GMC for the Starter/Generator Control Module Coolant Temperature Sensor 2 Performance?

- The cost of repair can vary depending on the specific issue, but it may involve replacing the sensor or repairing the control module, which can range from $100 to $500 or more.

8. Are there any recalls or technical service bulletins related to OBDII code P1A75 GMC?

- It is recommended to check with a GMC dealership or visit the NHTSA website to see if there are any relevant recalls or technical service bulletins for this particular OBDII code.

9. Can a DIY enthusiast fix OBDII code P1A75 GMC at home?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this code at home, but it is recommended to seek professional help if unsure.

10. How can I prevent OBDII code P1A75 GMC from occurring in the future?

- Regular maintenance, such as checking coolant levels and keeping an eye on engine temperature, can help prevent issues that may trigger this OBDII code.