AutoCodes – Chevrolet – U1836 2017 Chevrolet Silverado

U1836 2017 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 2017 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 349

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 2017 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 2017 Chevrolet Silverado - Lost Communication with Amplifier on Low Speed CAN Bus - AutoCodes.com — U1836 2017 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 2017 Chevrolet Silverado?

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

How to Fix the DTC U1836 2017 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 2017 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 2017 Chevrolet Silverado code?

Need more information on how to fix the U1836 2017 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 2017 Chevrolet Silverado Code

1. What are common symptoms of OBDII code U1836 in a 2017 Chevrolet Silverado?

- Common symptoms include issues with the vehicle's audio system, such as no sound or distorted sound, as well as malfunctioning controls on the amplifier.

2. What does the OBDII code U1836 "Lost Communication with Amplifier on Low Speed CAN Bus" indicate in a 2017 Chevrolet Silverado?

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

3. What are possible causes of OBDII code U1836 in a 2017 Chevrolet Silverado?

- Possible causes include faulty wiring connections, a defective amplifier, issues with the CAN bus network, or a problem with the vehicle's onboard computer system.

4. How can I diagnose the cause of OBDII code U1836 in my 2017 Chevrolet Silverado?

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

5. What are some repair tips for addressing OBDII code U1836 in a 2017 Chevrolet Silverado?

- Repair tips may include checking and repairing any damaged wiring, replacing the faulty amplifier if necessary, ensuring proper connections in the CAN bus network, and resetting the trouble code after repairs are made.

6. Can I continue driving my 2017 Chevrolet Silverado with OBDII code U1836 present?

- While the vehicle may still be operational with this code present, it is recommended to address the issue promptly to prevent further audio system malfunctions or potential communication errors within the vehicle's systems.

7. Is it safe to attempt repairs for OBDII code U1836 in a 2017 Chevrolet Silverado myself?

- DIY repairs for this code may be possible for those with experience in automotive electrical systems. However, if unsure, it is advisable to seek professional assistance to accurately diagnose and repair the underlying issue.

8. Will resetting the OBDII code U1836 in my 2017 Chevrolet Silverado make it go away permanently?

- Resetting the code may clear it temporarily, but if the root cause of the communication error is not addressed, the code is likely to reappear. It is essential to diagnose and repair the issue to prevent future occurrences.

9. How much can I expect to pay for repairs related to OBDII code U1836 in a 2017 Chevrolet Silverado?

- The cost of repairs can vary depending on the specific cause of the code and whether professional assistance is required. Costs may include parts, labor, and diagnostic fees, so it's advisable to obtain estimates from qualified technicians.

10. Are there any recalls or technical service bulletins related to OBDII code U1836 in a 2017 Chevrolet Silverado?

- It's recommended to check with a Chevrolet dealership or online databases for any relevant recalls or technical service bulletins related to OBDII code U1836 in a 2017 Silverado, as manufacturers may provide guidance on addressing common issues.