AutoCodes – Chevrolet – P2670 2018 Chevrolet Silverado

P2670 2018 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 2018 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 331

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 2018 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 2018 Chevrolet Silverado - Actuator High Control Circuit Group 2 Low Voltage - AutoCodes.com — P2670 2018 Chevrolet Silverado Code - Actuator High Control Circuit Group 2 Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2670 2018 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 2018 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 2018 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 2018 Chevrolet Silverado code?

Need more information on how to fix the P2670 2018 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 2018 Chevrolet Silverado Code

1. What does the OBDII code P2670 mean on a 2018 Chevrolet Silverado?

P2670 indicates "Actuator High Control Circuit Group 2 Low Voltage," meaning there is a low voltage issue in the control circuit of a specific actuator group.

2. What are the common symptoms of code P2670 in a 2018 Chevrolet Silverado?

Symptoms may include a check engine light, poor vehicle performance, unresponsive actuators, or issues with specific systems like throttle or transmission.

3. What causes the P2670 code on a 2018 Chevrolet Silverado?

Common causes include damaged wiring, corroded connectors, a faulty actuator, or a malfunctioning control module.

4. Can I drive my 2018 Chevrolet Silverado with a P2670 code?

While it may be possible to drive, it is not recommended as the issue could worsen and lead to further damage or performance issues.

5. How do I diagnose the P2670 code on my Silverado?

Start by visually inspecting the wiring and connectors, then use a multimeter to check for voltage issues. A diagnostic scan tool can help pinpoint the affected actuator or circuit.

6. How do I fix the P2670 code on a 2018 Chevrolet Silverado?

Repairs may include replacing damaged wiring, cleaning or repairing corroded connectors, or replacing a faulty actuator or control module.

7. Is the P2670 code a common issue in the 2018 Chevrolet Silverado?

Itâ€™s not a very common code but can occur due to wear and tear, especially in areas with harsh environmental conditions.

8. Will clearing the code fix the P2670 issue permanently?

Clearing the code may turn off the check engine light temporarily, but the issue will persist unless the underlying problem is resolved.

9. How much does it cost to repair the P2670 code on a 2018 Chevrolet Silverado?

Repair costs can vary from $50 for minor wiring repairs to over $500 for replacing a control module or actuator.

10. Do I need a professional mechanic to fix the P2670 code?

While minor issues like damaged wires can be fixed by experienced DIYers, more complex problems, such as control module failures, typically require a professional mechanic.