AutoCodes – GMC – P2669 GMC

P2669 GMC Code - Actuator High Control Circuit Group 2

Quick Answer

The Transmission Control Module (TCM) receives information from a variety of sensors, switches, and serial data information from other control modules. Common causes include Faulty Transmission Control Solenoid Valve, Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted. 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: P2669 GMC indicates Actuator High Control Circuit Group 2.
Common causes: Common causes include Faulty Transmission Control Solenoid Valve, Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted.
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 1,261

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 Jul 18, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2669 GMC Description

The Transmission Control Module (TCM) receives information from a variety of sensors, switches, and serial data information from other control modules. This information is used to control a combination of solenoid valves to obtain the correct line pressure, gear ratio, and torque converter clutch operation. The Transmission Control Solenoid Valves are electro-mechanically operated valves. The valves are controlled by an electric current through the solenoid. The TCM high side driver 2 is located inside of the control solenoid valve assembly which has no serviceable parts. The high side driver 2 provides power to the Transmission Control Module pressure control solenoids and shift solenoids. The Diagnostic Trouble Code (DTC) will be set when the TCM detects an open or short to ground or voltage on the high side driver 2 for 1 s.

OBDII Code P2669 GMC - Actuator High Control Circuit Group 2 - AutoCodes.com — P2669 GMC Code - Actuator High Control Circuit Group 2

What does this mean?

What are the Possible Causes of the DTC P2669 GMC?

Faulty Transmission Control Solenoid Valve
Faulty Transmission Control Module (TCM)
Transmission Control Module harness is open or shorted
Transmission Control Module circuit poor electrical connection

How to Fix the DTC P2669 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 P2669 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 P2669 GMC code?

Need more information on how to fix the P2669 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2669 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P2669 2014 GMC Sierra — Actuator High Control Circuit Group 2
P2669 2015 GMC Sierra — Actuator High Control Circuit Group 2
P2669 2016 GMC Sierra — Actuator High Control Circuit Group 2
P2669 2017 GMC Sierra — Actuator High Control Circuit Group 2
P2669 2018 GMC Sierra — Actuator High Control Circuit Group 2

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 P2669 GMC Code

1. What are the common symptoms of OBDII code P2669 GMC?

Symptoms of OBDII code P2669 GMC typically include engine misfires, rough idling, decreased fuel efficiency, and potential stalling.

2. What causes the OBDII code P2669 GMC to trigger?

The code P2669 GMC is triggered when there is a malfunction in the Actuator High Control Circuit Group 2, often caused by issues with wiring, connectors, or the actuator itself.

3. How can I diagnose the OBDII code P2669 GMC?

Diagnosing the code P2669 GMC involves using an OBDII scanner to retrieve the code, checking the wiring and connectors related to the actuator, and testing the actuator for proper functionality.

4. Can a faulty actuator cause the OBDII code P2669 GMC?

Yes, a faulty actuator within the High Control Circuit Group 2 can cause the code P2669 GMC to trigger due to its impact on engine performance.

5. What are some repair tips for fixing the OBDII code P2669 GMC?

Repair tips for addressing the code P2669 GMC include checking and repairing any damaged wiring or connectors, replacing the faulty actuator if necessary, and clearing the code with an OBDII scanner.

6. Is it safe to continue driving with the OBDII code P2669 GMC present?

It is not recommended to continue driving with the code P2669 GMC present, as it can lead to further engine issues and potential damage if left unresolved.

7. Can I reset the OBDII code P2669 GMC without fixing the underlying issue?

While you can clear the code temporarily with an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

8. How much does it typically cost to repair the OBDII code P2669 GMC?

The cost of repairing the OBDII code P2669 GMC can vary depending on the specific cause of the issue, but it may involve expenses for parts and labor at a repair shop.

9. Is the OBDII code P2669 GMC a common problem in GMC vehicles?

The OBDII code P2669 GMC related to the Actuator High Control Circuit Group 2 can be a common issue in GMC vehicles, particularly in models with variable valve timing systems.

10. Can a DIY enthusiast fix the OBDII code P2669 GMC at home?

Depending on the DIY enthusiast's skill level and access to tools, it may be possible to address the code P2669 GMC at home by following repair guides and using proper diagnostic equipment.