AutoCodes – GMC – U2116 GMC

U2116 GMC Code - Lost Communication With Instrument Panel Cluster

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Instrument Panel Cluster (IPC), Instrument Panel Cluster harness is open or shorted, Instrument Panel Cluster 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: U2116 GMC indicates Lost Communication With Instrument Panel Cluster.
Common causes: Common causes include Faulty Instrument Panel Cluster (IPC), Instrument Panel Cluster harness is open or shorted, Instrument Panel Cluster 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 742

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 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2116 GMC Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored code. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U2116 GMC - Lost Communication With Instrument Panel Cluster - AutoCodes.com — U2116 GMC Code - Lost Communication With Instrument Panel Cluster

What does this mean?

What are the Possible Causes of the DTC U2116 GMC?

Faulty Instrument Panel Cluster (IPC)
Instrument Panel Cluster harness is open or shorted
Instrument Panel Cluster circuit poor electrical connection

How to Fix the DTC U2116 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 U2116 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 U2116 GMC Code

1. What are the common symptoms of OBDII code U2116 in a GMC related to lost communication with the instrument panel cluster?

- Common symptoms include a malfunctioning speedometer, tachometer, fuel gauge, warning lights not working, and other issues with the instrument panel cluster.

2. What are some possible causes of OBDII code U2116 in a GMC indicating lost communication with the instrument panel cluster?

- Possible causes may include a faulty instrument panel cluster, damaged wiring or connectors, a faulty control module, or a communication bus issue.

3. How can I diagnose the reason behind OBDII code U2116 in a GMC for lost communication with the instrument panel cluster?

- Diagnosing this code typically requires a professional OBDII scanner to access the vehicle's communication modules and pinpoint the source of the issue.

4. Can a DIY enthusiast repair OBDII code U2116 in a GMC related to lost communication with the instrument panel cluster?

- While some basic troubleshooting like checking connections and fuses can be done, resolving the root cause of this code often requires advanced diagnostic tools and expertise.

5. What are some repair tips for addressing OBDII code U2116 in a GMC due to lost communication with the instrument panel cluster?

- Repair tips may include inspecting and repairing damaged wiring, checking and resetting the instrument panel cluster, and ensuring proper communication between modules.

6. Is it safe to continue driving a GMC with OBDII code U2116 indicating lost communication with the instrument panel cluster?

- It is generally not recommended to drive the vehicle with this issue unresolved, as it may lead to inaccurate readings and potential safety hazards.

7. How much does it typically cost to repair OBDII code U2116 in a GMC caused by lost communication with the instrument panel cluster?

- Repair costs can vary significantly depending on the root cause of the issue, but they may range from a few hundred to over a thousand dollars including parts and labor.

8. Are there any recalls or technical service bulletins related to OBDII code U2116 in GMC vehicles for lost communication with the instrument panel cluster?

- It's recommended to check with a GMC dealership or online resources for any relevant recalls or technical service bulletins specific to this code and issue.

9. Can extreme weather conditions or environmental factors trigger OBDII code U2116 in a GMC related to lost communication with the instrument panel cluster?

- While rare, extreme weather conditions or environmental factors like water damage can potentially disrupt communication and trigger this code.

10. How can I prevent OBDII code U2116 from occurring in my GMC due to lost communication with the instrument panel cluster in the future?

- Regular vehicle maintenance, checking for any signs of wiring damage, and addressing any instrument panel cluster issues promptly can help prevent this code from recurring.