AutoCodes – Hummer – U0107 Hummer

U0107 Hummer 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 Hummer 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 8,260

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

What does this mean?

What are the Possible Causes of the DTC U0107 Hummer?

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 Hummer?

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 HUMMER H2
2006-2007 HUMMER H2 SUT
HUMMER H2 Factory Service Bulletin OBDII Code U0107

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0107 Hummer 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 U0107 Hummer code?

Need more information on how to fix the U0107 Hummer 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 U0107 Hummer Code

1. What does the OBDII code U0107 for a Hummer mean?

The U0107 code indicates that there is a communication problem between the vehicle's engine control module (ECM) and the throttle actuator control module.

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

Common symptoms include engine stalling, loss of power, rough idle, and difficulty accelerating.

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

Possible causes include a faulty throttle actuator control module, damaged wiring or connectors, a malfunctioning ECM, or a problem with the CAN bus communication system.

4. How can I diagnose a U0107 code in my Hummer?

Diagnosis involves using a diagnostic scan tool to retrieve the trouble codes, checking the wiring and connectors for damage, and testing the throttle actuator control module for proper operation.

5. Can I still drive my Hummer with a U0107 code present?

It is not recommended to drive your Hummer with a U0107 code as it can lead to unsafe driving conditions and potential damage to the vehicle.

6. How can I repair a U0107 code in my Hummer?

Repair options may include replacing the throttle actuator control module, repairing damaged wiring or connectors, reprogramming the ECM, or addressing any communication issues within the vehicle's network.

7. Is it possible to clear a U0107 code in a Hummer without fixing the underlying issue?

Clearing the code without addressing the root cause may temporarily turn off the check engine light, but the issue will likely reoccur, and the vehicle may continue to experience problems.

8. Are there any DIY repair tips for a U0107 code in a Hummer?

While some basic troubleshooting like checking for loose connections or damaged wires can be done at home, diagnosing and repairing a U0107 code often requires specialized tools and expertise best handled by a professional mechanic.

9. How much does it typically cost to fix a U0107 code in a Hummer?

The cost of repairing a U0107 code can vary depending on the specific cause of the issue, but it may involve parts replacement, labor costs, and diagnostic fees, which can add up to a few hundred dollars or more.

10. Can a U0107 code in a Hummer cause other problems if left unresolved?

Yes, leaving a U0107 code unresolved can lead to further damage to the vehicle's components, reduced fuel efficiency, and potentially unsafe driving conditions, so it is important to address the issue promptly.