AutoCodes – GMC – U2137 GMC

U2137 GMC Code - Lost Communications With Vehicle Theft Deterrent Module

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Vehicle Theft Deterrent Module, Vehicle Theft Deterrent Module harness is open or shorted, Vehicle Theft Deterrent 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
U2137 GMC indicates Lost Communications With Vehicle Theft Deterrent Module.
Common causes
Common causes include Faulty Vehicle Theft Deterrent Module, Vehicle Theft Deterrent Module harness is open or shorted, Vehicle Theft Deterrent 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 848
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 16, 2020
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Code U2137 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 U2137 GMC - Lost Communications With Vehicle Theft Deterrent Module - AutoCodes.com
U2137 GMC Code - Lost Communications With Vehicle Theft Deterrent Module

What are the Possible Causes of the DTC U2137 GMC?

  • Faulty Vehicle Theft Deterrent Module
  • Vehicle Theft Deterrent Module harness is open or shorted
  • Vehicle Theft Deterrent Module circuit poor electrical connection

How to Fix the DTC U2137 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 U2137 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.

Need more information about the U2137 GMC code?

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Need Help with the Code?

Get the U2137 GMC code diagnosed by a professional: Find a repair shop in your area

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 U2137 GMC Code

1. What are common symptoms of OBDII code U2137 GMC?

The common symptoms of code U2137 GMC include issues with the vehicle's anti-theft system, difficulty starting the engine, and warning lights related to theft deterrent system.

2. What causes the OBDII code U2137 GMC to appear?

The code U2137 GMC, indicating lost communications with the vehicle theft deterrent module, is typically caused by a faulty theft deterrent module, damaged wiring, or a communication error between modules.

3. How can I diagnose the OBDII code U2137 GMC?

Diagnosing code U2137 GMC involves using an OBDII scanner to retrieve the code, checking the wiring and connections to the theft deterrent module, and testing the module for proper function.

4. Can a DIYer repair the OBDII code U2137 GMC issue?

While some basic troubleshooting steps can be performed by a DIYer, repairing code U2137 GMC may require specialized equipment and expertise. It is recommended to consult a professional mechanic for proper diagnosis and repair.

5. Are there any quick fixes for the OBDII code U2137 GMC?

Quick fixes for code U2137 GMC may include checking and tightening the wiring connections to the theft deterrent module, resetting the vehicle's computer system, or reprogramming the module if needed.

6. How serious is the OBDII code U2137 GMC?

Code U2137 GMC, indicating lost communications with the vehicle theft deterrent module, can impact the vehicle's security system and may lead to starting issues. It is important to address this code promptly to ensure the proper functioning of the anti-theft system.

7. What should I do if the OBDII code U2137 GMC keeps reappearing?

If the OBDII code U2137 GMC keeps reappearing after resetting or repairs, it may indicate a persistent issue with the theft deterrent module or the vehicle's communication network. Further diagnosis by a professional technician is recommended.

8. Can driving with the OBDII code U2137 GMC cause further damage?

Continuing to drive with the OBDII code U2137 GMC may pose a risk of potential security system malfunctions and starting issues. It is best to address the underlying cause of the code to prevent any further damage to the vehicle.

9. How much does it typically cost to repair the OBDII code U2137 GMC?

The cost of repairing code U2137 GMC can vary depending on the specific issue causing the code, the labor rates of the repair shop, and the cost of any replacement parts needed. It is advisable to obtain quotes from multiple mechanics for an accurate estimate.

10. Is it possible to prevent the OBDII code U2137 GMC from appearing in the future?

Regular maintenance of the vehicle's anti-theft system, including checking wiring connections and keeping the theft deterrent module clean and secure, can help prevent the recurrence of code U2137 GMC.

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