AutoCodes – GMC – U3500 GMC

U3500 GMC Code - Control Module Input Power 'A' Circuit Range/Performance

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Faulty Control Module setting the code, Control Module harness is open or shorted, 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: U3500 GMC indicates Control Module Input Power 'A' Circuit Range/Performance.
Common causes: Common causes include Faulty Control Module setting the code, Control Module harness is open or shorted, 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 544

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 Jun 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U3500 GMC Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. With the ignition is ON, the Diagnostic Trouble Code (DTC) will set when the control module or sensor detects a system voltage of less than approximately 9 V for approximately 5 s.

OBDII Code U3500 GMC - Control Module Input Power 'A' Circuit Range/Performance - AutoCodes.com — U3500 GMC Code - Control Module Input Power 'A' Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC U3500 GMC?

Faulty Control Module setting the code
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC U3500 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 U3500 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 U3500 GMC code?

Need more information on how to fix the U3500 GMC code? Get Access to Factory Service Manuals

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 U3500 GMC Code

1. What are the common symptoms of OBDII code U3500 GMC?

- Common symptoms include engine stalling, rough idling, poor acceleration, and the illumination of the check engine light.

2. What are the possible causes of OBDII code U3500 GMC?

- Possible causes include a faulty control module, issues with the wiring or connectors in the input power circuit, or a power supply problem.

3. How can I diagnose the Control Module Input Power 'A' Circuit Range/Performance issue?

- Diagnose the problem by checking the power supply to the control module, inspecting the wiring and connectors for damage, and using a scan tool to retrieve the specific error codes.

4. What repair tips can help fix OBDII code U3500 GMC?

- Repair tips include repairing any damaged wiring or connectors, replacing the control module if necessary, and ensuring a stable power supply to the module.

5. Can I drive my vehicle with OBDII code U3500 GMC?

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

6. How serious is the Control Module Input Power 'A' Circuit Range/Performance problem?

- This issue should be taken seriously as it can impact the performance and reliability of your vehicle. Ignoring the problem may result in more severe issues over time.

7. Will resetting the check engine light resolve OBDII code U3500 GMC?

- Resetting the check engine light may temporarily turn it off, but it will not fix the underlying issue causing the code. The problem should be properly diagnosed and repaired.

8. How much does it typically cost to repair OBDII code U3500 GMC?

- The cost of repairs can vary depending on the specific cause of the issue, but it may involve labor costs for diagnosis and potential replacement of parts like the control module.

9. Can a DIY enthusiast fix OBDII code U3500 GMC at home?

- While some DIY enthusiasts may be able to diagnose and repair this issue, it is recommended to have a professional mechanic handle the diagnosis and repair to ensure it is done correctly.

10. How can I prevent OBDII code U3500 GMC from reoccurring?

- To prevent the code from reoccurring, regularly inspect and maintain the electrical components of your vehicle, including the control module, wiring, and connectors.