AutoCodes – GMC – P1813 GMC

P1813 GMC Code - Torque Control Solenoid Malfunction

Quick Answer

P1813 GMC indicates Torque Control Solenoid Malfunction. Common causes include Faulty Torque Control Solenoid, Torque Control Solenoid harness is open or shorted, Torque Control Solenoid circuit poor electrical connection. 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: P1813 GMC indicates Torque Control Solenoid Malfunction.
Common causes: Common causes include Faulty Torque Control Solenoid, Torque Control Solenoid harness is open or shorted, Torque Control Solenoid circuit poor electrical connection.
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 1,776

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1813 GMC Description

OBDII Code P1813 GMC - Torque Control Solenoid Malfunction - AutoCodes.com — P1813 GMC Code - Torque Control Solenoid Malfunction

What does this mean?

What are the Possible Causes of the DTC P1813 GMC?

Faulty Torque Control Solenoid
Torque Control Solenoid harness is open or shorted
Torque Control Solenoid circuit poor electrical connection

How to Fix the DTC P1813 GMC?

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 P1813 GMC 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.

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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 P1813 GMC Code

1. What does the OBDII code P1813 mean on a GMC vehicle?

Code P1813 indicates a malfunction with the Torque Control Solenoid, which is responsible for controlling torque converter clutch engagement in the transmission.

2. What are the common symptoms of code P1813 in a GMC?

Symptoms may include harsh shifting, transmission slipping, poor acceleration, reduced fuel efficiency, and the illumination of the check engine light.

3. What causes the P1813 code to appear in a GMC vehicle?

Common causes include a faulty torque control solenoid, damaged wiring or connectors in the transmission circuit, low transmission fluid, or a malfunctioning transmission control module (TCM).

4. Can I drive my GMC with the P1813 code?

Driving with this code is not recommended, as it can lead to further transmission damage and unsafe driving conditions due to erratic shifting.

5. How do I diagnose the P1813 code on my GMC?

Diagnosis typically involves scanning for stored codes, inspecting the torque control solenoid and its wiring, checking transmission fluid levels and condition, and testing the TCM for faults.

6. How much does it cost to fix the P1813 code on a GMC?

Repair costs can vary widely, but replacing the torque control solenoid typically costs between $150 and $400, depending on parts and labor.

7. Can low transmission fluid cause the P1813 code?

Yes, low or contaminated transmission fluid can cause the torque control solenoid to malfunction, triggering code P1813.

8. What tools are needed to diagnose and repair the P1813 code?

Essential tools include an OBDII scanner, a multimeter for electrical testing, and basic hand tools for accessing the transmission components.

9. Does the P1813 code always indicate solenoid failure?

No, it could also be caused by damaged wiring, poor electrical connections, or issues with the transmission control module.

10. How can I prevent the P1813 code from occurring in my GMC?

Regularly maintain your transmission by checking fluid levels, replacing fluid as needed, and inspecting the electrical connections for corrosion or damage.