AutoCodes – GMC – U1517 GMC

U1517 GMC 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 GMC 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 1,453
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 02, 2020
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Code U1517 GMC 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 GMC - Body Control Module Lost Communication With Sunroof Sunshade Motor Module On LIN Bus - AutoCodes.com
U1517 GMC Code - Body Control Module Lost Communication With Sunroof Sunshade Motor Module On LIN Bus

What are the Possible Causes of the DTC U1517 GMC?

  • 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 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 U1517 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 U1517 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 U1517 GMC Code

1. What are the common symptoms of OBDII code U1517 GMC related to the Body Control Module losing communication with the Sunroof Sunshade Motor Module on the LIN bus?

- Common symptoms include the sunroof or sunshade not operating correctly, malfunction indicator lights illuminating on the dashboard, and potential issues with other electrical components.

2. What are some possible causes of OBDII code U1517 GMC being triggered?

- Possible causes include a faulty Body Control Module, a malfunctioning Sunroof Sunshade Motor Module, damaged wiring or connectors in the LIN bus communication network, or software issues.

3. How can I diagnose the source of the communication loss between the Body Control Module and the Sunroof Sunshade Motor Module?

- A diagnostic scan tool capable of reading manufacturer-specific codes like U1517 GMC can help pinpoint the exact cause by checking for communication errors and monitoring data from the modules involved.

4. Are there any DIY repair tips for addressing OBDII code U1517 GMC?

- While some wiring or connector issues can be visually inspected and repaired by DIY enthusiasts, it is recommended to consult with a professional technician to accurately diagnose and fix the problem.

5. Can driving with OBDII code U1517 GMC present any risks?

- Driving with this code may not pose immediate safety risks, but it is important to address the underlying communication issue promptly to prevent potential malfunctions in the sunroof system or other related components.

6. Is it necessary to replace the Body Control Module or Sunroof Sunshade Motor Module if OBDII code U1517 GMC is detected?

- Not necessarily. Sometimes, the issue may be related to wiring problems or loose connections, which can be repaired without replacing the modules. A thorough diagnosis is crucial to determine the appropriate course of action.

7. How much can I expect to pay for professional repairs related to OBDII code U1517 GMC?

- Repair costs can vary depending on the specific cause of the communication loss and the labor rates of the service provider. It is advisable to obtain estimates from reputable mechanics or dealerships.

8. Can resetting the OBDII system clear the U1517 GMC code temporarily?

- Resetting the system may temporarily clear the code, but if the underlying issue causing the communication loss persists, the code is likely to reappear once the system detects the fault again.

9. Are there any recalls or technical service bulletins related to OBDII code U1517 GMC for GMC vehicles?

- It is recommended to check with a GMC dealership or the manufacturer's website for any recalls or technical service bulletins related to this specific OBDII code to see if there are known issues or remedies available.

10. How can I prevent OBDII code U1517 GMC from recurring in the future?

- Regular maintenance checks, timely repairs of any electrical issues, and avoiding water damage to the sunroof system can help prevent the recurrence of U1517 GMC and similar communication errors.

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