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P2108 GMC Code - Throttle Actuator Control Module Performance

- Code Popularity: 13,459 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P2108 GMC?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Throttle Actuator Control (TAC) module
  • Throttle Actuator Control (TAC) module harness is open or shorted
  • Throttle Actuator Control (TAC) module circuit poor electrical connection (loose or broken wires)
⚠ Does your GMC have Safety Recalls? → Check here

How to Fix the DTC P2108 GMC?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

There is a factory service bulletin for the P2108 code on following GMC 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 P2108

Search for P2108 GMC Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2108 GMC code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

When is the Code Detected?

The Throttle Actuator Control (TAC) module is unable to write or read data from the Random Access Memory (RAM)

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • No throttle response

Code P2108 GMC Description

The Throttle Actuator Control (TAC) module contains data that is essential for proper TAC operation. The TAC module continuously tests the integrity of this data. When the TAC module is unable to write or read data to and from Random Access Memory (RAM), or the TAC module is unable to correctly read data from the flash memory or and internal TAC module processor fault is detected and the Diagnostic Trouble Code (DTC) is set.

OBDII Code P2108 GMC - Throttle Actuator Control Module Performance - AutoCodes.com
P2108 GMC Code - Throttle Actuator Control Module Performance

Need More Information on the Code?

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Code P2108 GMC comments

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