AutoCodes – GMC – U1515 GMC

U1515 GMC Code - Body Control Module Lost Communication With Left Windshield Wiper Motor/Windshield Wiper 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 Left Windshield Wiper Motor/Windshield Wiper Motor Module, Left Windshield Wiper Motor/Windshield Wiper Motor Module harness is open or shorted, Left Windshield Wiper Motor/Windshield Wiper 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: U1515 GMC indicates Body Control Module Lost Communication With Left Windshield Wiper Motor/Windshield Wiper Motor Module On LIN Bus.
Common causes: Common causes include Faulty Left Windshield Wiper Motor/Windshield Wiper Motor Module, Left Windshield Wiper Motor/Windshield Wiper Motor Module harness is open or shorted, Left Windshield Wiper Motor/Windshield Wiper 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 986

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 U1515 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 Left Windshield Wiper Motor/Windshield Wiper Motor Module has not been received.

OBDII Code U1515 GMC - Body Control Module Lost Communication With Left Windshield Wiper Motor/Windshield Wiper Motor Module On LIN Bus - AutoCodes.com — U1515 GMC Code - Body Control Module Lost Communication With Left Windshield Wiper Motor/Windshield Wiper Motor Module On LIN Bus

What does this mean?

What are the Possible Causes of the DTC U1515 GMC?

Faulty Left Windshield Wiper Motor/Windshield Wiper Motor Module
Left Windshield Wiper Motor/Windshield Wiper Motor Module harness is open or shorted
Left Windshield Wiper Motor/Windshield Wiper Motor Module circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC U1515 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 U1515 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.

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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 U1515 GMC Code

1. What are the common symptoms of OBDII code U1515 in a GMC related to the Body Control Module losing communication with the left windshield wiper motor/module?

- Common symptoms include the left windshield wiper not functioning properly, erratic wiper movements, or complete wiper failure on the affected side.

2. What are the possible causes of OBDII code U1515 in a GMC indicating a communication issue between the Body Control Module and the left windshield wiper components?

- Causes may include a faulty left windshield wiper motor/module, damaged wiring or connectors, a malfunctioning Body Control Module, or a communication bus error.

3. How can I diagnose the source of the communication problem between the Body Control Module and the left windshield wiper motor/module triggering code U1515 in a GMC?

- Diagnostic steps may involve checking the wiring and connectors for damage, testing the left windshield wiper motor/module for functionality, and scanning the vehicle for other related trouble codes.

4. Is it safe to continue driving a GMC with OBDII code U1515 related to the Body Control Module's communication loss with the left windshield wiper components?

- It is not recommended to drive the vehicle with this issue unresolved, as it can lead to compromised visibility during adverse weather conditions, increasing the risk of accidents.

5. Can a DIY enthusiast repair OBDII code U1515 in a GMC caused by the Body Control Module losing communication with the left windshield wiper motor/module?

- While some basic inspections and checks can be done by DIYers, resolving the communication issue may require specialized diagnostic tools and expertise, making it advisable to consult a professional mechanic.

6. How much does it typically cost to repair OBDII code U1515 in a GMC related to the Body Control Module's communication issue with the left windshield wiper motor/module?

- The repair cost can vary depending on the root cause of the problem, but it may involve expenses for parts replacement, labor charges, and diagnostic fees, which can range from a few hundred to over a thousand dollars.

7. Can a reset or clearing of the OBDII code U1515 in a GMC resolve the communication problem between the Body Control Module and the left windshield wiper motor/module?

- Clearing the code may temporarily eliminate the warning light, but it will not fix the underlying communication issue. It is crucial to address the root cause to prevent future occurrences.

8. Are there any preventive maintenance tips to avoid encountering OBDII code U1515 in a GMC due to communication problems with the Body Control Module and the left windshield wiper components?

- Regularly inspecting the windshield wiper system, ensuring proper electrical connections, and addressing any minor issues promptly can help prevent communication failures leading to this trouble code.

9. Can extreme weather conditions or water exposure contribute to triggering OBDII code U1515 in a GMC associated with the Body Control Module's communication loss with the left windshield wiper motor/module?

- Yes, harsh weather conditions or water ingress can potentially damage the wiper motor/module, connectors, or wiring, leading to communication failures and the activation of code U1515.

10. Is it necessary to reprogram or reconfigure any components after repairing OBDII code U1515 in a GMC related to the Body Control Module's lost communication with the left windshield wiper motor/module?

- Depending on the repair actions taken, reprogramming or reconfiguration of the Body Control Module or other related components may be necessary to ensure proper functionality and communication post-repair.