AutoCodes – GMC – P0722 2017 GMC Sierra

P0722 2017 GMC Sierra Code - Transmission Output Speed Sensor Circuit No Signal

Quick Answer

The Output Speed Sensor (OSS) is a hall-effect type sensor. Common causes include Faulty Transmission Output Speed Sensor (OSS), Transmission Output Speed Sensor harness is open or shorted, Transmission Output 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: P0722 2017 GMC Sierra indicates Transmission Output Speed Sensor Circuit No Signal.
Common causes: Common causes include Faulty Transmission Output Speed Sensor (OSS), Transmission Output Speed Sensor harness is open or shorted, Transmission Output 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.

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Code Popularity 235

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 29, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0722 2017 GMC Sierra Description

The Output Speed Sensor (OSS) is a hall-effect type sensor. The OSS mounts to the automatic transmission case assembly and connects to the control solenoid valve assembly through a 2-wire harness and connector. The sensor faces the park gear teeth. The sensor receives battery voltage on the OSS supply voltage circuit from the Transmission Control Module (TCM). As the output shaft rotates, the sensor produces a signal frequency based on the park gear teeth. This signal is transmitted through the OSS signal circuit to the TCM. The TCM uses the OSS signal to determine line pressure, transmission shift patterns, vehicle speed, and gear ratio.
The Diagnostic Trouble Code (DTC) will be set when the TCM detects a 600 RPM or greater change in output speed.

OBDII Code P0722 2017 GMC Sierra - Transmission Output Speed Sensor Circuit No Signal - AutoCodes.com — P0722 2017 GMC Sierra Code - Transmission Output Speed Sensor Circuit No Signal

What does this mean?

What are the Possible Causes of the DTC P0722 2017 GMC Sierra?

Faulty Transmission Output Speed Sensor (OSS)
Transmission Output Speed Sensor harness is open or shorted
Transmission Output Speed Sensor circuit poor electrical connection
Faulty Transmission Control Module (TCM)

How to Fix the DTC P0722 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 P0722 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.

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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 P0722 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P0722 in a 2017 GMC Sierra?

The common symptoms of OBDII code P0722 include erratic or non-functional speedometer, harsh shifting, transmission slippage, and the Check Engine Light being illuminated.

2. What does the OBDII code P0722 mean for a 2017 GMC Sierra?

OBDII code P0722 indicates that the Transmission Output Speed Sensor Circuit is not sending a signal to the engine control module (ECM).

3. What are the possible causes of OBDII code P0722 in a 2017 GMC Sierra?

Possible causes of OBDII code P0722 include a faulty transmission output speed sensor, damaged wiring or connectors in the speed sensor circuit, or a malfunctioning ECM.

4. How can I diagnose the OBDII code P0722 in my 2017 GMC Sierra?

Diagnosing OBDII code P0722 involves using a scan tool to retrieve the code, inspecting the wiring and connectors of the transmission output speed sensor, and testing the sensor itself for proper operation.

5. Can driving with OBDII code P0722 in a 2017 GMC Sierra cause further damage?

Continuing to drive with OBDII code P0722 may lead to further transmission problems, such as increased wear and potential transmission failure due to incorrect shift points and lack of speed sensor input.

6. How can OBDII code P0722 in a 2017 GMC Sierra be repaired?

Repairing OBDII code P0722 typically involves replacing the faulty transmission output speed sensor, repairing any damaged wiring or connectors, and clearing the code with a scan tool.

7. Is it safe to continue driving a 2017 GMC Sierra with OBDII code P0722?

It is not recommended to drive a vehicle with OBDII code P0722, as it can lead to potential transmission issues and unsafe driving conditions. It is best to address the problem promptly.

8. Can I reset the Check Engine Light caused by OBDII code P0722 in my 2017 GMC Sierra without fixing the issue?

Resetting the Check Engine Light without addressing the underlying issue causing OBDII code P0722 will only temporarily turn off the light. The problem will persist until it is properly diagnosed and repaired.

9. How much does it cost to repair OBDII code P0722 in a 2017 GMC Sierra?

The cost of repairing OBDII code P0722 can vary depending on the extent of the issue, but it typically involves replacing the transmission output speed sensor, which can range from $100 to $300 including parts and labor.

10. Can a DIY enthusiast fix OBDII code P0722 in a 2017 GMC Sierra?

While diagnosing and repairing OBDII code P0722 may be possible for experienced DIY enthusiasts with the proper tools and knowledge, it is recommended to consult a professional mechanic for accurate diagnosis and repair to ensure the problem is fixed correctly.