AutoCodes – GMC – P1A76 GMC

P1A76 GMC Code - Starter/Generator Control Module Coolant Temperature Sensor 2 Circuit Low Voltage

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: P1A76 GMC indicates Starter/Generator Control Module Coolant Temperature Sensor 2 Circuit Low Voltage.
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 807

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 P1A76 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 P1A76 GMC - Starter/Generator Control Module Coolant Temperature Sensor 2 Circuit Low Voltage - AutoCodes.com — P1A76 GMC Code - Starter/Generator Control Module Coolant Temperature Sensor 2 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1A76 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 P1A76 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 P1A76 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 P1A76 GMC 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 P1A76 GMC Code

1. What are common symptoms of OBDII code P1A76 in a GMC related to the Starter/Generator Control Module Coolant Temperature Sensor 2 Circuit Low Voltage?

- Common symptoms include issues with starting the vehicle, poor acceleration, and decreased fuel efficiency.

2. What are the possible causes of OBDII code P1A76 GMC related to the Starter/Generator Control Module Coolant Temperature Sensor 2 Circuit Low Voltage?

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

3. How can I diagnose the cause of OBDII code P1A76 in my GMC related to the Starter/Generator Control Module Coolant Temperature Sensor 2 Circuit Low Voltage?

- Using a diagnostic scanner to read the code and check the coolant temperature sensor's readings can help diagnose the issue. Additionally, inspecting the wiring for any damage or loose connections is recommended.

4. Can I still drive my GMC with OBDII code P1A76 related to the Starter/Generator Control Module Coolant Temperature Sensor 2 Circuit Low Voltage?

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

5. How can I repair OBDII code P1A76 GMC related to the Starter/Generator Control Module Coolant Temperature Sensor 2 Circuit Low Voltage?

- Repair options may include replacing the faulty coolant temperature sensor, repairing any damaged wiring, or replacing the starter/generator control module if necessary.

6. Are there any DIY tips for fixing OBDII code P1A76 in my GMC related to the Starter/Generator Control Module Coolant Temperature Sensor 2 Circuit Low Voltage?

- DIY tips include checking and cleaning the coolant temperature sensor connections, ensuring proper coolant levels, and inspecting the wiring for any visible damage.

7. Is it necessary to reset the OBDII system after repairing code P1A76 GMC related to the Starter/Generator Control Module Coolant Temperature Sensor 2 Circuit Low Voltage?

- Yes, it is recommended to clear the code and reset the OBDII system after repairing the issue to ensure the problem has been resolved and to turn off the check engine light.

8. What is the role of the Starter/Generator Control Module Coolant Temperature Sensor 2 in a GMC that triggers OBDII code P1A76?

- The sensor helps monitor the coolant temperature to ensure optimal engine performance and efficiency. A malfunction can lead to performance issues and trigger the code.