AutoCodes – GMC – U0107 GMC

U0107 GMC Code - Lost Communication With Throttle Actuator Control Module

Quick Answer

The Throttle Actuator Control (TAC) module and the Powertrain Control Module (PCM) communicate via a dedicated serial data circuit. Common causes include Faulty Throttle Actuator Control (TAC) Module, Throttle Actuator Control Module harness is open or shorted, Throttle Actuator Control Module circuit poor electrical connection (loose or broken wires). 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: U0107 GMC indicates Lost Communication With Throttle Actuator Control Module.
Common causes: Common causes include Faulty Throttle Actuator Control (TAC) Module, Throttle Actuator Control Module harness is open or shorted, Throttle Actuator Control Module circuit poor electrical connection (loose or broken wires).
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 28,356

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 Nov 01, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code U0107 GMC Description

The Throttle Actuator Control (TAC) module and the Powertrain Control Module (PCM) communicate via a dedicated serial data circuit. This serial data circuit is separated from other serial data circuits on the vehicle. Accurate transmitting and receiving of serial data require not only good circuit integrity but also sufficient system voltage. This diagnostic test monitors de accuracy of the serial data transmitted between the TAC module and the PCM. The Diagnostic Trouble Code (DTC) U0107 is set when the Powertrain Control Module detects a loss of data or invalid data from the Throttle Actuator Control.

OBDII Code U0107 GMC - Lost Communication With Throttle Actuator Control Module - AutoCodes.com — U0107 GMC Code - Lost Communication With Throttle Actuator Control Module

What does this mean?

What are the Possible Causes of the DTC U0107 GMC?

Faulty Throttle Actuator Control (TAC) Module
Throttle Actuator Control Module harness is open or shorted
Throttle Actuator Control Module circuit poor electrical connection (loose or broken wires)

How to Fix the DTC U0107 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 does this mean?

Code Tech Notes

There is a factory service bulletin for the U0107 code on following Cadillac vehicles:

2006-2007 GMC Savana 1500/2500/3500
2006-2007 GMC Sierra
2006-2007 GMC Sierra Flex Fuel
2006-2007 GMC Sierra Hybrid
2006-2007 GMC Sierra Performance Edition
2006-2007 GMC Sierra 2500/3500 HD
2006-2007 GMC Yukon
GMC Factory Service Bulletin OBDII Code U0107

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0107 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 U0107 GMC Code

1. What does the OBDII code U0107 GMC mean?

The code U0107 GMC indicates a communication problem between the engine control module (ECM) and the throttle actuator control module.

2. What are the common symptoms of a U0107 GMC code?

Common symptoms of a U0107 GMC code include engine stalling, reduced engine power, rough idling, and the illumination of the Check Engine Light.

3. What are the possible causes of a U0107 GMC code?

Possible causes of a U0107 GMC code include damaged wiring or connectors, a faulty throttle actuator control module, a malfunctioning engine control module (ECM), or a weak battery.

4. How can I diagnose a U0107 GMC code?

Diagnosing a U0107 GMC code typically involves using a scan tool to retrieve the code, checking for any related codes, inspecting the wiring and connectors for damage, and testing the throttle actuator control module and ECM.

5. How can I repair a U0107 GMC code?

Repairing a U0107 GMC code may involve repairing or replacing damaged wiring or connectors, replacing the throttle actuator control module, reprogramming the ECM, or addressing any underlying issues causing communication errors.

6. Can I drive my vehicle with a U0107 GMC code?

It is not recommended to drive your vehicle with a U0107 GMC code, as it can lead to engine performance issues and potential safety hazards. It is advisable to address the issue promptly.

7. How much does it cost to fix a U0107 GMC code?

The cost of fixing a U0107 GMC code can vary depending on the underlying cause of the issue, the extent of the repairs needed, and labor costs. It is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.

8. Is a U0107 GMC code a common issue in GMC vehicles?

While U0107 GMC codes can occur in GMC vehicles, they are not as common as some other OBDII codes. However, it is important to address the issue promptly to prevent further damage to the vehicle.

9. Can a U0107 GMC code be triggered by a loose gas cap?

A U0107 GMC code is not typically triggered by a loose gas cap. This code is more commonly related to communication issues between the ECM and throttle actuator control module.

10. How can I prevent a U0107 GMC code from occurring in the future?

To prevent a U0107 GMC code from occurring in the future, it is important to perform regular vehicle maintenance, address any warning lights promptly, and ensure that all electrical connections are secure and in good condition.