AutoCodes – GMC – P25A2 2017 GMC Sierra

P25A2 2017 GMC Sierra Code - Brake System Control Module Requested MIL Illumination

Quick Answer

Control modules constantly monitor the vehicle for any condition which may adversely affect vehicle performance. Common causes include Check Brake System Control Module for codes, Faulty Brake System Control Module. 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: P25A2 2017 GMC Sierra indicates Brake System Control Module Requested MIL Illumination.
Common causes: Common causes include Check Brake System Control Module for codes, Faulty Brake System Control Module.
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 404

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 15, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P25A2 2017 GMC Sierra Description

Control modules constantly monitor the vehicle for any condition which may adversely affect vehicle performance. If a condition is detected, the module sets a Diagnostic Trouble Code (DTC) and sends a serial data message to the Engine Control Module (ECM). The ECM sets a DTC to inform that the module has set a DTC. The serial data message sent by the module also contains a request for the ECM to illuminate the Malfunction Indicator Lamp (MIL).
The DTC will be set when the ECM receives a serial data message from the Brake System Control Module indicating that DTC has been set in the module.

OBDII Code P25A2 2017 GMC Sierra - Brake System Control Module Requested MIL Illumination - AutoCodes.com — P25A2 2017 GMC Sierra Code - Brake System Control Module Requested MIL Illumination

What does this mean?

What are the Possible Causes of the DTC P25A2 2017 GMC Sierra?

Check Brake System Control Module for codes
Faulty Brake System Control Module

How to Fix the DTC P25A2 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 P25A2 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.

Need more information about the P25A2 2017 GMC Sierra code?

Need more information on how to fix the P25A2 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P25A2 2017 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 P25A2 2017 GMC Sierra Code

1. What does the OBDII code P25A2 mean on a 2017 GMC Sierra?

P25A2 indicates that the Brake System Control Module has requested the Malfunction Indicator Light (MIL) to illuminate, signaling a potential issue with the brake system or related components.

2. What are the common symptoms of code P25A2 in a 2017 GMC Sierra?

Symptoms may include the MIL or ABS warning light being illuminated, reduced braking performance, or activation of the vehicle's fail-safe mode.

3. What causes the P25A2 code to trigger in a 2017 GMC Sierra?

Common causes include a malfunction in the brake system control module, wiring or connector issues, low brake fluid levels, or a fault in the ABS system.

4. Can I drive my 2017 GMC Sierra with the P25A2 code active?

While the vehicle may still be drivable, it is not recommended as braking performance could be compromised, potentially leading to unsafe driving conditions.

5. How do you diagnose the P25A2 code on a 2017 GMC Sierra?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the brake system control module and its wiring, and checking for additional related codes.

6. What repairs are typically needed to fix the P25A2 code?

Repairs may include replacing or reprogramming the brake system control module, repairing damaged wiring, or addressing any ABS-related issues.

7. How much does it cost to fix the P25A2 code on a 2017 GMC Sierra?

Repair costs vary but may range from $200 to $1,000 depending on whether the module needs replacement or if the issue is minor, such as fixing a wiring fault.

8. Does the P25A2 code always mean the brake system control module is bad?

No, the code could be caused by other issues such as wiring problems, sensor malfunctions, or low brake fluid, so a full diagnosis is necessary.

9. Can a software update resolve the P25A2 code on a 2017 GMC Sierra?

In some cases, a software update or reprogramming of the brake system control module can resolve the issue, especially if the problem is related to outdated software.

10. What tools are needed to troubleshoot the P25A2 code on a 2017 GMC Sierra?

Youâ€™ll need an advanced OBDII scanner, a multimeter for electrical diagnostics, and potentially a service manual specific to the vehicle to guide troubleshooting.