AutoCodes – GMC – P2670 2015 GMC Sierra

P2670 2015 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 2015 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 246

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 2015 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 2015 GMC Sierra - Actuator High Control Circuit Group 2 Low Voltage - AutoCodes.com — P2670 2015 GMC Sierra Code - Actuator High Control Circuit Group 2 Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2670 2015 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 2015 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 2015 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 2015 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 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P2670 in a 2015 GMC Sierra?

- Common symptoms include poor acceleration, reduced engine performance, and potential stalling or rough idling.

2. What does the OBDII code P2670 "Actuator High Control Circuit Group 2 Low Voltage" indicate?

- This code indicates a low voltage condition in the actuator high control circuit group 2, affecting the engine's performance.

3. What are the possible causes of OBDII code P2670 in a 2015 GMC Sierra?

- Possible causes include faulty actuator components, damaged wiring or connectors, a malfunctioning PCM, or a weak battery.

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

- To diagnose P2670, you may need to perform a thorough inspection of the actuator components, check the wiring for any damage, and conduct voltage tests.

5. Can driving with OBDII code P2670 cause further damage to my GMC Sierra?

- Continued driving with this code may lead to reduced engine efficiency, potential stalling, or other drivability issues, so it is advisable to address the problem promptly.

6. How can I repair OBDII code P2670 in my 2015 GMC Sierra?

- Repairing this code may involve replacing faulty actuator components, repairing damaged wiring, ensuring proper connections, or resetting the PCM after resolving the issue.

7. Is it safe to continue driving my GMC Sierra with the OBDII code P2670 illuminated?

- While the vehicle may still be operable with this code, it is recommended to address the underlying issue promptly to prevent further damage or performance issues.

8. Can a DIY enthusiast fix OBDII code P2670, or should I seek professional help?

- Depending on your automotive repair skills and knowledge, you may attempt to fix this code yourself by following proper diagnostic procedures, but professional help is recommended if unsure.

9. How much does it typically cost to repair OBDII code P2670 in a 2015 GMC Sierra?

- The cost of repairing this code can vary depending on the underlying issue, parts needed, and labor rates, so it is advisable to obtain estimates from reputable auto repair shops.

10. Will resetting the OBDII code P2670 by clearing the fault codes resolve the issue in my GMC Sierra?

- Clearing the fault codes may temporarily turn off the check engine light, but if the underlying issue causing P2670 is not addressed, the code is likely to reappear.