AutoCodesGMC – P0659 2017 GMC Sierra

P0659 2017 GMC Sierra Code - Actuator High Control Circuit Group 1 High 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
P0659 2017 GMC Sierra indicates Actuator High Control Circuit Group 1 High 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 162
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 18, 2022
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Code P0659 2017 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 1 is located inside of the control solenoid valve assembly which has no serviceable parts. The high side driver 1 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 short to voltage on the high side driver 1 circuit for 1 s after engine start.
OBDII Code P0659 2017 GMC Sierra - Actuator High Control Circuit Group 1 High Voltage - AutoCodes.com
P0659 2017 GMC Sierra Code - Actuator High Control Circuit Group 1 High Voltage

What are the Possible Causes of the DTC P0659 2017 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 P0659 2017 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 P0659 2017 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 P0659 2017 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 P0659 2017 GMC Sierra Code

What does the OBDII code P0659 mean on a 2017 GMC Sierra?

1. P0659 indicates a high voltage condition in the Actuator Control Circuit Group 1, which could involve various actuators in the vehicle’s control system. 2.

What are common symptoms of the P0659 code on a 2017 GMC Sierra?

Symptoms may include the check engine light turning on, reduced power mode, poor engine performance, or unresponsive actuators like throttle or turbo controls. 3.

What causes the P0659 code to appear on a 2017 GMC Sierra?

Typical causes include faulty actuators, damaged wiring or connectors, a short to voltage in the circuit, or a malfunctioning powertrain control module (PCM). 4.

Can I drive my 2017 GMC Sierra with the P0659 code active?

While it may be possible to drive, it’s not recommended, as the issue could lead to reduced performance or further damage to the vehicle’s systems. 5.

How do I diagnose the P0659 code on a 2017 GMC Sierra?

Diagnosis involves using a diagnostic scanner, inspecting wiring and connectors for damage, testing the actuator for faults, and checking for possible shorts or open circuits. 6.

What tools are needed to troubleshoot the P0659 code on a 2017 GMC Sierra?

A diagnostic scanner, a multimeter to test voltage and continuity, and potentially a wiring diagram for the Actuator Control Circuit Group 1. 7.

How can I fix the P0659 code on my 2017 GMC Sierra?

Repairs may involve replacing a faulty actuator, repairing or replacing damaged wiring or connectors, or, in rare cases, reprogramming or replacing the PCM. 8.

Is the P0659 code specific to any actuator in the 2017 GMC Sierra?

No, it refers to a group of actuators in Control Circuit Group 1, so identifying the specific actuator requires diagnosis. 9.

How much does it cost to fix the P0659 code on a 2017 GMC Sierra?

Repair costs can vary widely depending on the root cause but typically range from $100 for minor wiring repairs to $1,000 or more if the PCM or actuator needs replacement. 10.

Can a low battery cause the P0659 code on a 2017 GMC Sierra?

While unlikely, electrical issues such as a weak battery or poor connections could contribute to voltage irregularities, so checking the battery is a good step.

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