AutoCodes – GMC – P1A63 GMC

P1A63 GMC Code - Starter/Generator Control Module Internal Circuit

Quick Answer

The Starter/Generator Control Module (SGCM) monitors to detect internal faults. 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: P1A63 GMC indicates Starter/Generator Control Module Internal Circuit.
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 913

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 19, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1A63 GMC Description

The Starter/Generator Control Module (SGCM) monitors to detect internal faults. If a fault is detected, the appropriate code will set.

OBDII Code P1A63 GMC - Starter/Generator Control Module Internal Circuit - AutoCodes.com — P1A63 GMC Code - Starter/Generator Control Module Internal Circuit

What does this mean?

What are the Possible Causes of the DTC P1A63 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 P1A63 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 P1A63 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.

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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 P1A63 GMC Code

1. What are common symptoms of OBDII code P1A63 GMC (Starter/Generator Control Module Internal Circuit)?

- Common symptoms include the check engine light illuminating, reduced engine power, and difficulty starting the vehicle.

2. What can cause the OBDII code P1A63 GMC to appear?

- The code P1A63 usually indicates a malfunction within the starter/generator control module's internal circuit, which can be caused by wiring issues, a faulty control module, or a weak battery.

3. How serious is the OBDII code P1A63 GMC?

- The code P1A63 should be addressed promptly as it can lead to starting issues and potential drivability problems. Ignoring the issue may result in the vehicle not starting at all.

4. Can I continue driving with the OBDII code P1A63 GMC present?

- It is not recommended to continue driving with the code P1A63 active, as it can lead to further damage to the vehicle's electrical system and potentially leave you stranded.

5. How do I diagnose and repair the OBDII code P1A63 GMC?

- Diagnosis typically involves checking the wiring connections, inspecting the control module, and testing the battery. Repair may involve repairing or replacing wiring, replacing the control module, or addressing any battery issues.

6. Is it possible to reset the OBDII code P1A63 GMC without fixing the underlying issue?

- While clearing the code may temporarily turn off the check engine light, the underlying issue causing the code will persist and likely trigger the code again in the future.

7. Can a DIY enthusiast fix the OBDII code P1A63 GMC?

- Depending on the root cause, some DIY enthusiasts with mechanical and electrical knowledge may be able to diagnose and repair the code P1A63. However, complex electrical issues may require professional assistance.

8. How much does it typically cost to repair the OBDII code P1A63 GMC?

- The cost of repairing the code P1A63 can vary widely depending on the specific issue causing the code, the vehicle's make and model, and labor rates. It's best to obtain a diagnostic from a trusted mechanic for an accurate estimate.

9. Are there any preventive measures to avoid the OBDII code P1A63 GMC from occurring?

- Regular maintenance, such as checking and maintaining the battery, inspecting wiring for damage, and ensuring the starter/generator system is functioning properly, can help prevent the code P1A63 from appearing.

10. How long does it typically take to repair the OBDII code P1A63 GMC?

- The repair time for the code P1A63 can vary depending on the complexity of the issue and the availability of parts. Simple fixes may be completed in a few hours, while more involved repairs could take longer.