AutoCodes – Chevrolet – U1064 Chevrolet

U1064 Chevrolet Code - Lost Communications With Body Control Module

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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: U1064 Chevrolet indicates Lost Communications With Body Control Module.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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 11,933

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 Apr 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1064 Chevrolet Description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for the state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an identification number is learned by a module, it will monitor for that module node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1064 is set.

OBDII Code U1064 Chevrolet - Lost Communications With Body Control Module - AutoCodes.com — U1064 Chevrolet Code - Lost Communications With Body Control Module

What does this mean?

What are the Possible Causes of the DTC U1064 Chevrolet?

Faulty Body Control Module (BCM)
Body Control Module (BCM) harness is open or shorted
Body Control Module (BCM) circuit poor electrical connection

How to Fix the DTC U1064 Chevrolet?

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 U1064 Chevrolet 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 U1064 Chevrolet Code

1. What are the common symptoms of OBDII code U1064 Chevrolet (Lost Communications With Body Control Module)?

- Common symptoms include issues with power windows, door locks, interior lights, and other body control functions.

2. What are the possible causes of U1064 Chevrolet code?

- The code may be triggered by a faulty body control module, wiring issues, poor connections, or a problem with the vehicle's network communication system.

3. How can I diagnose the reason behind the U1064 Chevrolet code?

- Diagnosis typically involves checking for loose or damaged wiring, testing the body control module for functionality, and inspecting the network communication system using a scan tool.

4. Can a DIY enthusiast repair U1064 Chevrolet code at home?

- While some simple wiring issues may be repairable by DIY enthusiasts, diagnosing and repairing problems with the body control module or network communication system may require professional expertise.

5. Is it safe to continue driving with the U1064 Chevrolet code illuminated?

- It is generally not recommended to drive with the U1064 code active, as it may affect the proper functioning of critical vehicle systems controlled by the body control module.

6. How much does it typically cost to repair U1064 Chevrolet code?

- The cost of repair can vary depending on the underlying issue, but it's important to budget for diagnostic fees, parts replacement costs, and labor charges from a qualified mechanic or dealership.

7. Are there any preventive measures to avoid triggering the U1064 Chevrolet code?

- Regular vehicle maintenance, checking for loose connections or wiring issues, and addressing any warning signs of body control module problems promptly can help prevent the U1064 code from appearing.

8. Can the U1064 code be intermittent or permanent?

- The U1064 code can appear intermittently if there are sporadic communication issues, but if the problem persists, it may become a permanent fault that needs immediate attention.

9. Will resetting the OBDII system clear the U1064 Chevrolet code?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear after some time.

10. How long does it take to repair U1064 Chevrolet code?

- The repair time for U1064 code can vary depending on the complexity of the issue, availability of parts, and the mechanic's workload, but it's advisable to consult with a professional for an accurate estimate.