AutoCodes – GMC – U1653 GMC

U1653 GMC Code - Chassis Systems High Speed Communication Enable Circuit

Quick Answer

The Body Control Module (BCM) activates the ignition circuit when the vehicle power mode is in ACCESSORY mode or Ignition ON/Vehicle In Service mode. Common causes include Faulty Module that is not communicating, Module harness is open or shorted, 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: U1653 GMC indicates Chassis Systems High Speed Communication Enable Circuit.
Common causes: Common causes include Faulty Module that is not communicating, Module harness is open or shorted, 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 559

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 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1653 GMC Description

The Body Control Module (BCM) activates the ignition circuit when the vehicle power mode is in ACCESSORY mode or Ignition ON/Vehicle In Service mode. The ignition circuit wakes up the devices for serial data bus communication. The Diagnostic Trouble Code (DTC) will set when the device setting the DTC has attempted to establish communications on the chassis high-speed GMLAN serial data circuits more than 3 times.

OBDII Code U1653 GMC - Chassis Systems High Speed Communication Enable Circuit - AutoCodes.com — U1653 GMC Code - Chassis Systems High Speed Communication Enable Circuit

What does this mean?

What are the Possible Causes of the DTC U1653 GMC?

Faulty Module that is not communicating
Module harness is open or shorted
Module circuit poor electrical connection

How to Fix the DTC U1653 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 U1653 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 U1653 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 U1653 GMC Code

1. What are the common symptoms of OBDII code U1653 GMC?

- Common symptoms include issues with the vehicle's chassis systems, such as ABS, traction control, stability control, or other related systems not functioning properly.

2. What does the OBDII code U1653 GMC indicate?

- The code U1653 indicates a fault in the Chassis Systems High Speed Communication Enable Circuit.

3. What are the possible causes of OBDII code U1653 GMC?

- The code U1653 can be caused by wiring issues, loose connections, a faulty control module, or problems with the communication network.

4. How can I diagnose OBDII code U1653 GMC?

- Diagnosing this code often requires using a scan tool to check for any stored codes, inspecting the wiring and connections related to the chassis systems, and testing the control modules involved.

5. Can I still drive my vehicle with OBDII code U1653 GMC?

- It is not recommended to drive the vehicle with this code present, as it can affect the proper functioning of critical chassis systems.

6. How can I repair OBDII code U1653 GMC?

- Repairing this code may involve addressing any wiring issues, repairing or replacing faulty components, ensuring proper connections, and clearing the code with a scan tool.

7. Is it necessary to reset the code after repairing OBDII code U1653 GMC?

- Yes, it is important to clear the code after performing repairs to see if the issue has been resolved and to reset the vehicle's system.

8. Can a DIY enthusiast fix OBDII code U1653 GMC?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing this code may require professional knowledge and tools.

9. How much does it cost to fix OBDII code U1653 GMC?

- The cost of fixing this code can vary depending on the underlying issue, parts needed for repair, and labor costs. It is recommended to consult a mechanic for an accurate estimate.

10. Are there any preventive measures to avoid OBDII code U1653 GMC?

- Regular maintenance, including checking the wiring and connections related to the chassis systems, can help prevent issues that may trigger the U1653 code.