AutoCodes – GMC – P176C 2016 GMC Sierra

P176C 2016 GMC Sierra Code - Intermediate Speed Sensor Circuit Low Voltage

Quick Answer

The sensor contains a hall-effect sensor and additional electronics that process the signal. Common causes include Faulty Transmission Intermediate Shaft Speed Sensor, Transmission Intermediate Shaft Speed Sensor harness is open or shorted, Transmission Intermediate Shaft Speed Sensor 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: P176C 2016 GMC Sierra indicates Intermediate Speed Sensor Circuit Low Voltage.
Common causes: Common causes include Faulty Transmission Intermediate Shaft Speed Sensor, Transmission Intermediate Shaft Speed Sensor harness is open or shorted, Transmission Intermediate Shaft Speed Sensor 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 382

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 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P176C 2016 GMC Sierra Description

The sensor contains a hall-effect sensor and additional electronics that process the signal. It detects the change of the strength of the magnetic field caused by the reluctor ring. When the strength changes, the sensor changes the amount of current it consumes. This results in a square wave signal of the current, while the voltage stays constant. The control module detects the frequency in which the current changes, which is proportional to the rotational speed.
The sensor is an input to the control module. The input signal is used to determine the rotational speed of the component, the Diagnostic Trouble Code (DTC) will be set when the reaction Carrier Assembly Transmission Intermediate Speed Sensor is less than 0.25 V for greater than 1 s.

OBDII Code P176C 2016 GMC Sierra - Intermediate Speed Sensor Circuit Low Voltage - AutoCodes.com — P176C 2016 GMC Sierra Code - Intermediate Speed Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P176C 2016 GMC Sierra?

Faulty Transmission Intermediate Shaft Speed Sensor
Transmission Intermediate Shaft Speed Sensor harness is open or shorted
Transmission Intermediate Shaft Speed Sensor circuit poor electrical connection
Faulty Transmission Control Module

How to Fix the DTC P176C 2016 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 P176C 2016 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 P176C 2016 GMC Sierra code?

Need more information on how to fix the P176C 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P176C 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P176C 2016 GMC Sierra Code

1. What does the OBDII code P176C mean on a 2016 GMC Sierra?

The code P176C indicates a problem with the Intermediate Speed Sensor Circuit, specifically that the voltage is lower than expected.

2. What are the common symptoms of code P176C on a 2016 GMC Sierra?

Symptoms may include erratic shifting, transmission slipping, poor fuel efficiency, or the check engine light illuminating.

3. What causes the P176C code on a 2016 GMC Sierra?

Common causes include a faulty intermediate speed sensor, damaged wiring or connectors, a malfunctioning transmission control module (TCM), or low transmission fluid levels.

4. How do I diagnose the P176C code on my GMC Sierra?

Start by checking the wiring and connectors for damage or corrosion, inspect the intermediate speed sensor, and test the sensorâ€™s voltage and resistance with a multimeter.

5. Can a low transmission fluid level trigger the P176C code?

Yes, low or contaminated transmission fluid can cause improper sensor operation, leading to this code.

6. Is it safe to drive a 2016 GMC Sierra with the P176C code?

Driving with this code is not recommended, as it may cause further transmission damage or unsafe driving conditions due to shifting issues.

7. How do I fix the P176C code on a GMC Sierra?

Repairs may involve replacing the intermediate speed sensor, repairing damaged wiring, cleaning corroded connectors, or updating/reprogramming the TCM.

8. How much does it cost to repair the P176C code on a 2016 GMC Sierra?

Repair costs can vary, but replacing the intermediate speed sensor typically ranges from $150 to $300, depending on parts and labor.

9. Can a P176C code be cleared without repairs?

Clearing the code without addressing the underlying issue will likely cause it to return, as the root problem remains unresolved.

10. How can I prevent the P176C code from occurring again?

Regularly maintain your transmission, inspect wiring and connections for wear, and ensure proper fluid levels and quality to prevent sensor-related issues.