AutoCodes – Chevrolet – U1836 2016 Chevrolet Silverado

U1836 2016 Chevrolet Silverado Code - Lost Communication with Amplifier on Low Speed CAN Bus

Quick Answer

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Common causes include Faulty Amplifier, Amplifier harness is open or shorted, Amplifier 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: U1836 2016 Chevrolet Silverado indicates Lost Communication with Amplifier on Low Speed CAN Bus.
Common causes: Common causes include Faulty Amplifier, Amplifier harness is open or shorted, Amplifier 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 173

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 Jul 24, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1836 2016 Chevrolet Silverado Description

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Once the scan tool is connected to the serial data circuit through the Data Link Connector (DLC), the scan tool can be used to monitor each device for diagnostic purposes and to check for Diagnostic Trouble Codes (DTC). When the vehicle is ON, each device communicating on the serial data circuit sends a state of health message to ensure that the device is operating properly. When a device stops communicating on the serial data circuit, for example, if the device loses power or ground, the state of health message it normally sends on the serial data circuit disappears. Other devices on the serial data circuit, which expect to receive that state of health message, detect its absence; those devices in turn set a DTC associated with the loss of state of health of the non-communicating device. A loss of serial data communications DTC does not represent a failure of the devices that contain the stored DTC.

OBDII Code U1836 2016 Chevrolet Silverado - Lost Communication with Amplifier on Low Speed CAN Bus - AutoCodes.com — U1836 2016 Chevrolet Silverado Code - Lost Communication with Amplifier on Low Speed CAN Bus

What does this mean?

What are the Possible Causes of the DTC U1836 2016 Chevrolet Silverado?

Faulty Amplifier
Amplifier harness is open or shorted
Amplifier circuit poor electrical connection

How to Fix the DTC U1836 2016 Chevrolet Silverado?

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 U1836 2016 Chevrolet Silverado 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 U1836 2016 Chevrolet Silverado code?

Need more information on how to fix the U1836 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 U1836 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code U1836 on a 2016 Chevrolet Silverado?

- Common symptoms include loss of sound from the audio system, malfunctioning radio controls, and issues with other entertainment features.

2. What can cause the OBDII code U1836 (Lost Communication with Amplifier on Low Speed CAN Bus) on a 2016 Chevrolet Silverado?

- Possible causes include a faulty amplifier, damaged wiring or connectors in the CAN bus network, or a communication breakdown between the amplifier and other vehicle modules.

3. How can I diagnose the U1836 OBDII code on my 2016 Chevrolet Silverado?

- Diagnosis involves using a diagnostic scanner to retrieve the trouble code, inspecting the amplifier and CAN bus connections, and testing for continuity and proper voltage in the wiring.

4. Are there any DIY repair tips for fixing the U1836 trouble code on a 2016 Chevrolet Silverado?

- DIY repair tips include checking and repairing any damaged wiring or connectors, resetting the audio system, and ensuring all connections to the amplifier are secure.

5. Can the U1836 code on a 2016 Chevrolet Silverado cause any other issues besides audio system problems?

- While the primary issue is communication loss with the amplifier, unresolved U1836 codes may lead to other electrical malfunctions or affect the vehicle's overall communication network.

6. Is it safe to continue driving my 2016 Chevrolet Silverado with the U1836 code?

- It is generally safe to drive the vehicle with the U1836 code, but it is recommended to address the issue promptly to prevent any potential electrical complications or further damage.

7. How much does it typically cost to repair the U1836 code on a 2016 Chevrolet Silverado?

- The cost of repair can vary depending on the underlying cause of the code, but it may range from a simple wiring repair to a replacement of the amplifier unit, potentially costing a few hundred dollars to over a thousand.

8. Can a software update fix the U1836 trouble code on a 2016 Chevrolet Silverado?

- In some cases, a software update from the manufacturer may address communication issues and resolve the U1836 code without the need for physical repairs. It's worth checking with a dealership or authorized service center for available updates.

9. Will disconnecting the battery reset the U1836 trouble code on a 2016 Chevrolet Silverado?

- Disconnecting the battery may reset the code temporarily, but if the underlying issue causing the U1836 code is not addressed, it is likely to reappear once the vehicle's systems reinitialize.

10. What is the best course of action if the U1836 code keeps coming back on a 2016 Chevrolet Silverado?

- If the U1836 code persists after attempted repairs, it is advisable to seek professional diagnostics and repair services to accurately pinpoint and resolve the root cause of the communication failure.