AutoCodes – Chevrolet – U1526 Chevrolet

U1526 Chevrolet Code - Body Control Module Lost Communication With Rear Seat Heating Control Module On LIN Bus

Quick Answer

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. Common causes include Faulty Rear Seat Heating Control Module, Rear Seat Heating Control Module harness is open or shorted, Rear Seat Heating 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: U1526 Chevrolet indicates Body Control Module Lost Communication With Rear Seat Heating Control Module On LIN Bus.
Common causes: Common causes include Faulty Rear Seat Heating Control Module, Rear Seat Heating Control Module harness is open or shorted, Rear Seat Heating 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 2,104

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 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1526 Chevrolet Description

The Local Interconnect Network (LIN) Bus consists of a single wire with a transmission rate of 10.417 Kbit/s. The serial data is transmitted over a LIN circuit between a master control module and other LIN devices within a particular subsystem. If serial data communication is lost between any of the LIN devices on the LIN bus network, the master control module will set a no communication code against the non-communicating LIN device. The Diagnostic Trouble Code (DTC) will set when a supervised periodic message to the Body Control Module (BCM) from the Rear Seat Heating Control Module has not been received.

OBDII Code U1526 Chevrolet - Body Control Module Lost Communication With Rear Seat Heating Control Module On LIN Bus - AutoCodes.com — U1526 Chevrolet Code - Body Control Module Lost Communication With Rear Seat Heating Control Module On LIN Bus

What does this mean?

What are the Possible Causes of the DTC U1526 Chevrolet?

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

How to Fix the DTC U1526 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 U1526 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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Need Help with the Code?

Get the U1526 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 U1526 Chevrolet Code

1. What are the common symptoms of OBDII code U1526 in a Chevrolet related to the Body Control Module losing communication with the Rear Seat Heating Control Module?

- Common symptoms include rear seat heating system not functioning, rear seat temperature controls not responding, and warning lights on the dashboard.

2. What could cause the Body Control Module to lose communication with the Rear Seat Heating Control Module on the LIN bus in a Chevrolet?

- Possible causes include damaged wiring or connectors, a faulty Rear Seat Heating Control Module, a malfunctioning Body Control Module, or a communication network issue.

3. How can I diagnose the OBDII code U1526 in my Chevrolet if the Body Control Module has lost communication with the Rear Seat Heating Control Module?

- Diagnosis typically involves checking the wiring connections, inspecting for any visible damage, and using a scan tool to communicate with the modules and identify the exact location of the communication failure.

4. Is it safe to continue driving my Chevrolet with the U1526 code indicating a communication issue between the Body Control Module and Rear Seat Heating Control Module?

- It is generally safe to drive the vehicle with this code, but it is recommended to have the issue diagnosed and repaired to ensure the proper functioning of the rear seat heating system.

5. What are some repair tips for addressing the U1526 code in a Chevrolet when the Body Control Module has lost communication with the Rear Seat Heating Control Module?

- Repair tips may include checking and repairing any damaged wiring, replacing faulty modules if necessary, and reprogramming or updating the software to restore communication between the modules.

6. Can a DIY enthusiast fix the U1526 code related to the Body Control Module losing communication with the Rear Seat Heating Control Module in a Chevrolet?

- While some basic troubleshooting steps can be taken, diagnosing and repairing communication issues between modules often require specialized tools and expertise, making it advisable to seek professional assistance.

7. How much does it typically cost to repair the U1526 code in a Chevrolet caused by the Body Control Module losing communication with the Rear Seat Heating Control Module?

- Repair costs can vary depending on the exact cause of the communication failure, but it may involve labor costs for diagnosis and repair, as well as potential expenses for parts replacement.

8. Are there any recalls or technical service bulletins related to the U1526 code in Chevrolet vehicles with issues concerning the Body Control Module and Rear Seat Heating Control Module communication?

- It is recommended to check with a Chevrolet dealership or the manufacturer's website for any recalls or technical service bulletins related to this specific OBDII code and communication problem.

9. How long does it typically take to repair the U1526 code in a Chevrolet when the Body Control Module has lost communication with the Rear Seat Heating Control Module?

- The repair time can vary based on the extent of the issue and the availability of parts, but it may take a few hours to a full day to diagnose and address the communication problem between the modules.

10. Can the U1526 OBDII code in a Chevrolet be a recurring issue even after the initial repair of the communication problem between the Body Control Module and Rear Seat Heating Control Module?

- If the root cause of the communication issue is not properly addressed during the initial repair, there is a possibility of the code reoccurring, highlighting the importance of thorough diagnosis and repair.