AutoCodes – GMC – P0881 2014 GMC Sierra

P0881 2014 GMC Sierra Code - Transmission Control Module Supply Voltage Performance

Quick Answer

The Transmission Control Module (TCM) requires continuous battery voltage to operate. Common causes include Transmission Control Module (TCM) Power and/or Ground connection, Faulty Transmission Control Module, 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: P0881 2014 GMC Sierra indicates Transmission Control Module Supply Voltage Performance.
Common causes: Common causes include Transmission Control Module (TCM) Power and/or Ground connection, Faulty Transmission Control Module, 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 173

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 Aug 03, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0881 2014 GMC Sierra Description

The Transmission Control Module (TCM) requires continuous battery voltage to operate. The Transmission Control Module monitors the battery voltage. The Diagnostic Trouble Code (DTC) will be set when the Transmission Control Module detects a variation in battery B+ voltage greater than 4 V for 0.5 s within a 1.5 s period.

OBDII Code P0881 2014 GMC Sierra - Transmission Control Module Supply Voltage Performance - AutoCodes.com — P0881 2014 GMC Sierra Code - Transmission Control Module Supply Voltage Performance

What does this mean?

What are the Possible Causes of the DTC P0881 2014 GMC Sierra?

Transmission Control Module (TCM) Power and/or Ground connection
Faulty Transmission Control Module
Transmission Control Module harness is open or shorted
Transmission Control Module circuit poor electrical connection

How to Fix the DTC P0881 2014 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 P0881 2014 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 P0881 2014 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 P0881 2014 GMC Sierra Code

1. What does the OBDII code P0881 mean for a 2014 GMC Sierra?

P0881 indicates an issue with the Transmission Control Module (TCM) supply voltage performance, meaning the TCM may not be receiving adequate power or experiencing voltage irregularities.

2. What are common symptoms of code P0881 in a 2014 GMC Sierra?

Symptoms may include difficulty shifting gears, transmission slipping, erratic gear changes, or the vehicle entering limp mode.

3. What can cause the P0881 code in a 2014 GMC Sierra?

Common causes include a faulty transmission control module, damaged wiring or connectors in the TCM circuit, a weak battery, or issues with the ignition switch.

4. How can I diagnose the P0881 code on my 2014 GMC Sierra?

Start by inspecting the TCM wiring and connectors for damage or corrosion. Check the battery voltage and test the ignition switch for proper function. Use a multimeter to verify voltage levels at the TCM.

5. Can a bad battery cause the P0881 code in a 2014 GMC Sierra?

Yes, a weak or failing battery can cause insufficient supply voltage to the TCM, triggering the P0881 code.

6. What repairs can fix the P0881 code on a 2014 GMC Sierra?

Repairs may include replacing damaged wiring or connectors, installing a new TCM, repairing or replacing the ignition switch, or replacing the battery if itâ€™s weak.

7. Is it safe to drive with the P0881 code in a 2014 GMC Sierra?

Driving with this code is not recommended as it may lead to erratic transmission behavior and further damage to the vehicle's drivetrain.

8. How much does it typically cost to repair the P0881 code on a 2014 GMC Sierra?

Repair costs vary but can range from $100 for wiring repairs to $500-$1,000 for TCM replacement, depending on labor and parts.

9. Can a P0881 code cause transmission damage in a 2014 GMC Sierra?

Yes, prolonged driving with this code can lead to transmission problems due to improper shifting and increased wear on components.

10. Do I need a professional mechanic to fix the P0881 code on my 2014 GMC Sierra?

While some basic checks like inspecting wiring can be done at home, more complex repairs like TCM replacement or ignition switch diagnosis may require professional assistance.