AutoCodes – Chevrolet – U1517 Chevrolet

U1517 Chevrolet Code - Body Control Module Lost Communication With Sunroof Sunshade Motor 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 Sunroof Sunshade Motor Module, Sunroof Sunshade Motor Module harness is open or shorted, Sunroof Sunshade Motor 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: U1517 Chevrolet indicates Body Control Module Lost Communication With Sunroof Sunshade Motor Module On LIN Bus.
Common causes: Common causes include Faulty Sunroof Sunshade Motor Module, Sunroof Sunshade Motor Module harness is open or shorted, Sunroof Sunshade Motor 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 2,769

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 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1517 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 Sunroof Sunshade Motor Module has not been received.

OBDII Code U1517 Chevrolet - Body Control Module Lost Communication With Sunroof Sunshade Motor Module On LIN Bus - AutoCodes.com — U1517 Chevrolet Code - Body Control Module Lost Communication With Sunroof Sunshade Motor Module On LIN Bus

What does this mean?

What are the Possible Causes of the DTC U1517 Chevrolet?

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

How to Fix the DTC U1517 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 U1517 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 U1517 Chevrolet Code

1. What does the OBDII code U1517 mean on a Chevrolet?

The U1517 code indicates that the Body Control Module (BCM) has lost communication with the Sunroof Sunshade Motor Module on the LIN (Local Interconnect Network) bus.

2. What are common symptoms of the U1517 code on a Chevrolet?

Symptoms may include a non-functioning sunroof or sunshade, sunroof operating erratically, warning lights on the dashboard, or no response when using the sunroof controls.

3. What causes the U1517 code to appear on a Chevrolet?

Common causes include a faulty sunroof sunshade motor module, a damaged or loose LIN bus wiring connection, a malfunctioning Body Control Module (BCM), or software issues.

4. Can the U1517 code affect other vehicle systems?

While it primarily affects the sunroof or sunshade operation, it could potentially cause communication issues with other related systems if the LIN bus wiring is compromised.

5. How is the U1517 code diagnosed?

A mechanic will use a scan tool to confirm the code, inspect the LIN bus wiring and connections, test the sunroof motor module, and check for BCM software updates or malfunctions.

6. Can I drive my Chevrolet with the U1517 code?

Yes, the vehicle is generally safe to drive, but the sunroof or sunshade may not function properly, and ignoring the issue could lead to more significant electrical problems over time.

7. How do I fix the U1517 code on my Chevrolet?

Potential fixes include repairing or replacing damaged wiring, reconnecting loose electrical connections, replacing the faulty sunroof sunshade motor module, or reprogramming the BCM.

8. How much does it cost to repair the U1517 code?

Repair costs vary depending on the issue but typically range from $100-$500, depending on whether wiring repairs or module replacements are needed.

9. Can a weak battery cause the U1517 code?

Yes, a weak or failing battery can cause communication errors on the LIN bus, leading to the U1517 code. Ensure the vehicleâ€™s battery is fully charged and in good condition.

10. Is a software update needed to fix the U1517 code on a Chevrolet?

In some cases, a software update for the Body Control Module (BCM) may resolve the issue if itâ€™s caused by a programming glitch.