AutoCodes – GMC – P174E GMC

P174E GMC Code - Output Shaft Speed / ABS Wheel Speed Correlation

Quick Answer

The P174E code detects a fault when the Anti-Lock Brake System (ABS) module and the Transmission Control Module (TCM) have different Vehicle Speed Sensor (VSS) values. Common causes include Faulty Vehicle Speed Sensor (VSS), Vehicle Speed Sensor (VSS) harness is open or shorted, Vehicle Speed Sensor (VSS) 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: P174E GMC indicates Output Shaft Speed / ABS Wheel Speed Correlation.
Common causes: Common causes include Faulty Vehicle Speed Sensor (VSS), Vehicle Speed Sensor (VSS) harness is open or shorted, Vehicle Speed Sensor (VSS) 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 953

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 Jan 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P174E GMC Description

The P174E code detects a fault when the Anti-Lock Brake System (ABS) module and the Transmission Control Module (TCM) have different Vehicle Speed Sensor (VSS) values.

OBDII Code P174E GMC - Output Shaft Speed / ABS Wheel Speed Correlation - AutoCodes.com — P174E GMC Code - Output Shaft Speed / ABS Wheel Speed Correlation

What does this mean?

What are the Possible Causes of the DTC P174E GMC?

Faulty Vehicle Speed Sensor (VSS)
Vehicle Speed Sensor (VSS) harness is open or shorted
Vehicle Speed Sensor (VSS) circuit poor electrical connection

How to Fix the DTC P174E 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 P174E 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 P174E GMC Code

1. What are the common symptoms of OBDII code P174E in a GMC vehicle?

The common symptoms of OBDII code P174E include issues with the vehicle's transmission shifting, the ABS system, and the speedometer not functioning properly.

2. What are the possible causes of OBDII code P174E in a GMC vehicle?

Possible causes of OBDII code P174E include a faulty output shaft speed sensor, a malfunctioning ABS wheel speed sensor, wiring issues, or a problem with the vehicle's control module.

3. How can I diagnose OBDII code P174E in my GMC vehicle?

Diagnosing OBDII code P174E involves using a scan tool to retrieve the fault code, checking the output shaft speed sensor, inspecting the ABS wheel speed sensors, and ensuring there are no wiring issues.

4. Can I continue driving my GMC vehicle with OBDII code P174E?

It is not recommended to continue driving your GMC vehicle with OBDII code P174E as it can lead to further damage to the transmission or ABS system. It's best to address the issue promptly.

5. How can I repair OBDII code P174E in my GMC vehicle?

Repairing OBDII code P174E may involve replacing the faulty output shaft speed sensor, addressing any issues with the ABS wheel speed sensors, repairing damaged wiring, or reprogramming the vehicle's control module.

6. Will resetting the OBDII code P174E in my GMC vehicle make it go away permanently?

Resetting the OBDII code P174E may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It's important to diagnose and repair the root cause of the problem.

7. Is OBDII code P174E in a GMC vehicle a serious issue?

OBDII code P174E in a GMC vehicle should be taken seriously as it can impact the vehicle's transmission and ABS system operation. Ignoring the code can lead to drivability issues and potential safety concerns.

8. Can a DIY enthusiast easily fix OBDII code P174E in a GMC vehicle?

Depending on their skill level and access to tools, a DIY enthusiast may be able to address OBDII code P174E by replacing sensors, checking wiring, and resetting the code. However, more complex issues may require professional help.

9. How long does it typically take to repair OBDII code P174E in a GMC vehicle?

The time to repair OBDII code P174E in a GMC vehicle can vary based on the specific cause of the issue. Simple fixes like sensor replacement may take a few hours, while more complex issues could take longer.

10. Will fixing OBDII code P174E improve my GMC vehicle's performance?

Addressing OBDII code P174E in a GMC vehicle can improve performance by restoring proper transmission shifting and ABS system function. It can also prevent further damage and ensure the vehicle operates safely.