AutoCodes – Chevrolet – P2670 2016 Chevrolet Silverado

P2670 2016 Chevrolet Silverado 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 Chevrolet Silverado 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 403

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 Chevrolet Silverado 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 Chevrolet Silverado - Actuator High Control Circuit Group 2 Low Voltage - AutoCodes.com — P2670 2016 Chevrolet Silverado Code - Actuator High Control Circuit Group 2 Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2670 2016 Chevrolet Silverado?

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 Chevrolet Silverado?

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 Chevrolet Silverado 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 Chevrolet Silverado code?

Need more information on how to fix the P2670 2016 Chevrolet Silverado 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 P2670 2016 Chevrolet Silverado Code

1. What does the OBDII code P2670 mean on a 2016 Chevrolet Silverado?

P2670 indicates a "Actuator Supply Voltage Circuit Group 2 Low Voltage," meaning the voltage to a specific actuator control circuit is lower than expected.

2. What are the common symptoms of the P2670 code in a Chevy Silverado?

Symptoms may include a check engine light, reduced engine performance, failure of certain electronic components, or intermittent electrical issues.

3. What causes the P2670 code to appear?

Common causes include a faulty actuator, damaged wiring or connectors, a failing powertrain control module (PCM), or a short or open circuit in the actuator voltage supply.

4. Can I drive my 2016 Silverado with a P2670 code?

While the vehicle may still be drivable, itâ€™s not recommended as the code could indicate electrical issues that may lead to further damage or reduced performance.

5. How do I diagnose the P2670 code?

Start by inspecting the wiring and connectors related to the actuator circuit for damage or corrosion. Use a multimeter to check for proper voltage and continuity in the circuit.

6. What is the most common fix for the P2670 code?

The most common fix is repairing or replacing damaged wiring or connectors, though in some cases, the actuator or the PCM may need replacement.

7. How much does it typically cost to fix the P2670 code on a Silverado?

Repair costs can range from $50 to $500 depending on the root cause, with wiring repairs on the lower end and PCM replacement on the higher end.

8. Could a dead battery cause the P2670 code?

Yes, a weak or dead battery can lead to low voltage in the actuator circuit, which may trigger the P2670 code.

9. Does the P2670 code require reprogramming the PCM?

Reprogramming the PCM is only necessary if it has been replaced or updated due to a fault causing the P2670 code.

10. Can a dirty or corroded ground connection cause the P2670 code?

Yes, a poor ground connection can lead to insufficient voltage in the actuator circuit, triggering the P2670 code. Check and clean all grounding points.