AutoCodes – Chevrolet – U1836 2015 Chevrolet Silverado

U1836 2015 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 2015 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 155

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 2015 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 2015 Chevrolet Silverado - Lost Communication with Amplifier on Low Speed CAN Bus - AutoCodes.com — U1836 2015 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 2015 Chevrolet Silverado?

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

How to Fix the DTC U1836 2015 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 2015 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 2015 Chevrolet Silverado code?

Need more information on how to fix the U1836 2015 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 2015 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code U1836 on a 2015 Chevrolet Silverado?

- Common symptoms include issues with the vehicle's audio system, such as no sound, distorted sound, or complete loss of audio function.

2. What does the U1836 code "Lost Communication with Amplifier on Low Speed CAN Bus" mean for a 2015 Chevrolet Silverado?

- This code indicates a communication problem between the vehicle's onboard computer system and the audio amplifier on the low-speed CAN bus network.

3. What are the possible causes of code U1836 on a 2015 Chevrolet Silverado?

- Possible causes include a faulty audio amplifier, wiring or connection issues between the amplifier and the CAN bus network, or a malfunction in the vehicle's computer system.

4. How can I diagnose the U1836 code on my 2015 Chevrolet Silverado?

- Diagnosing the code typically involves checking the connections and wiring between the amplifier and the CAN bus network, testing the audio amplifier for proper functionality, and using a diagnostic scanner to communicate with the vehicle's computer system.

5. How can I repair the U1836 code on my 2015 Chevrolet Silverado?

- Repairs may involve fixing any wiring or connection issues, replacing a faulty audio amplifier, or reprogramming the vehicle's computer system to establish communication with the amplifier.

6. Can I continue driving my 2015 Chevrolet Silverado with the U1836 code present?

- It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to restore proper audio functionality.

7. Is it possible to reset the U1836 code on a 2015 Chevrolet Silverado without fixing the underlying issue?

- While you can clear the code using a diagnostic scanner, it is important to address the root cause to prevent the code from reappearing.

8. How much does it typically cost to repair the U1836 code on a 2015 Chevrolet Silverado?

- Repair costs can vary depending on the specific issue, but they may range from a simple wiring repair to a more involved amplifier replacement, potentially costing a few hundred to a few thousand dollars.

9. Are there any common related codes that may accompany U1836 on a 2015 Chevrolet Silverado?

- Other related codes that may appear include communication codes with other vehicle modules or components on the CAN bus network, such as U1835 (Lost Communication with Amplifier Control Module) or U1837 (Lost Communication with Amplifier on High Speed CAN Bus).

10. How can I prevent the U1836 code from occurring again on my 2015 Chevrolet Silverado?

- Regularly checking and maintaining the audio system components, ensuring proper wiring connections, and addressing any communication issues promptly can help prevent the recurrence of this code.