AutoCodes – GMC – P2670 2016 GMC Sierra

P2670 2016 GMC Sierra Code - Actuator High Control Circuit Group 2 Low Voltage

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: P2670 2016 GMC Sierra indicates Actuator High Control Circuit Group 2 Low Voltage.
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 153

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 P2670 2016 GMC Sierra 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 internal open or short to ground on the high side driver 2 for 1 s.

OBDII Code P2670 2016 GMC Sierra - Actuator High Control Circuit Group 2 Low Voltage - AutoCodes.com — P2670 2016 GMC Sierra Code - Actuator High Control Circuit Group 2 Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2670 2016 GMC Sierra?

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 P2670 2016 GMC Sierra?

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 P2670 2016 GMC Sierra 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 P2670 2016 GMC Sierra code?

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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 P2670 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P2670 in a 2016 GMC Sierra?

- Common symptoms of code P2670 include poor engine performance, reduced fuel efficiency, and illuminated Check Engine Light.

2. What does the OBDII code P2670 "Actuator High Control Circuit Group 2 Low Voltage" mean for a 2016 GMC Sierra?

- This code indicates that there is low voltage detected in the actuator high control circuit group 2 in the vehicle's engine system.

3. What are the possible causes of OBDII code P2670 in a 2016 GMC Sierra?

- Possible causes of code P2670 include a faulty actuator, damaged wiring or connectors in the control circuit, or issues with the engine control module.

4. How can I diagnose the OBDII code P2670 in my 2016 GMC Sierra?

- Diagnosing code P2670 may involve using an OBDII scanner to read the code, inspecting the actuator and its wiring, and testing the voltage in the control circuit.

5. Can I drive my 2016 GMC Sierra with OBDII code P2670?

- It is not recommended to drive your vehicle with code P2670 as it may lead to further damage to the engine system. It's best to address the issue promptly.

6. How can I repair OBDII code P2670 in my 2016 GMC Sierra?

- Repairing code P2670 may involve replacing a faulty actuator, repairing or replacing damaged wiring or connectors, or reprogramming the engine control module.

7. Is it possible to reset OBDII code P2670 in a 2016 GMC Sierra without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is crucial to address the root cause of the problem to prevent the code from reoccurring.

8. Are there any DIY tips for troubleshooting OBDII code P2670 in a 2016 GMC Sierra?

- DIY tips may include visually inspecting the actuator and its connections, checking for loose or damaged wiring, and ensuring proper voltage in the control circuit.

9. Can a mechanic help me fix OBDII code P2670 in my 2016 GMC Sierra?

- Yes, a qualified mechanic can diagnose and repair code P2670 by conducting a thorough inspection, identifying the issue, and performing the necessary repairs.

10. How much does it typically cost to repair OBDII code P2670 in a 2016 GMC Sierra?

- The cost of repairing code P2670 can vary depending on the extent of the issue, parts needed for replacement, and labor costs. It's best to consult a mechanic for an accurate estimate.