AutoCodes – GMC – B2725 2017 GMC Sierra

B2725 2017 GMC Sierra Code - Transfer Case Range Selection Switch Circuit

Quick Answer

The Transfer Case Shift Control Switch (TCSCS) allows the driver to select between ranges. Common causes include Faulty Transfer Case Range Selection Switch, Transfer Case Range Selection Switch harness is open or shorted, Transfer Case Range Selection Switch 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: B2725 2017 GMC Sierra indicates Transfer Case Range Selection Switch Circuit.
Common causes: Common causes include Faulty Transfer Case Range Selection Switch, Transfer Case Range Selection Switch harness is open or shorted, Transfer Case Range Selection Switch 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 299

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 May 30, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B2725 2017 GMC Sierra Description

The Transfer Case Shift Control Switch (TCSCS) allows the driver to select between ranges. The Transfer Case Control Module (TCCM) supplies a regulated 5 V, to the switch through the 5-volt reference circuit. The current travels through the specific resistor of the currently selected mode, each mode has its own resistor. The current is then returned to the Transfer Case Control Module through the switch signal circuit. The Transfer Case Control Module continuously monitors the switch signal circuit to determine whether the driver has requested a mode change. The Diagnostic Trouble Code (DTC) sets when the low side driver is ON, the Transfer Case Control Module measures an invalid voltage on the Four-Wheel Drive Switch Signal circuit.

OBDII Code B2725 2017 GMC Sierra - Transfer Case Range Selection Switch Circuit - AutoCodes.com — B2725 2017 GMC Sierra Code - Transfer Case Range Selection Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B2725 2017 GMC Sierra?

Faulty Transfer Case Range Selection Switch
Transfer Case Range Selection Switch harness is open or shorted
Transfer Case Range Selection Switch circuit poor electrical connection
Faulty Transfer Case Control Module

How to Fix the DTC B2725 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 does this mean?

Code Tech Notes

B2725:03 Transfer Case Range Selection Switch Circuit Low Voltage
B2725:07 Transfer Case Range Selection Switch Circuit High Voltage
B2725:08 Transfer Case Range Selection Switch Circuit Performance Signal Invalid

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2725 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 B2725 2017 GMC Sierra code?

Need more information on how to fix the B2725 2017 GMC Sierra code? Get Access to Factory Service Manuals

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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 B2725 2017 GMC Sierra Code

1. What does OBDII code B2725 mean for my 2017 GMC Sierra?

- OBDII code B2725 indicates a problem with the Transfer Case Range Selection Switch Circuit.

2. What are common symptoms of a Transfer Case Range Selection Switch Circuit issue?

- Common symptoms include difficulty shifting gears, erratic behavior in the transfer case, and warning lights on the dashboard.

3. What are possible causes of OBDII code B2725 in a 2017 GMC Sierra?

- Causes may include a faulty transfer case range selection switch, damaged wiring or connectors, or a problem with the transfer case control module.

4. How can I diagnose a Transfer Case Range Selection Switch Circuit problem in my GMC Sierra?

- Diagnosis typically involves scanning the vehicle for OBDII codes, inspecting the transfer case range selection switch and its wiring, and testing the transfer case control module.

5. Can I still drive my GMC Sierra with OBDII code B2725?

- It is not recommended to drive the vehicle with this issue as it may lead to further damage or safety concerns.

6. How can I repair a Transfer Case Range Selection Switch Circuit problem in my GMC Sierra?

- Repair may involve replacing the faulty transfer case range selection switch, repairing damaged wiring or connectors, or reprogramming the transfer case control module.

7. Is it possible to reset the OBDII code B2725 in a 2017 GMC Sierra?

- Resetting the code may temporarily clear the warning lights, but it is important to diagnose and address the underlying issue to prevent it from reoccurring.

8. How much does it cost to fix an OBDII code B2725 in a 2017 GMC Sierra?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve parts replacement and labor costs.

9. Can a DIY enthusiast fix the Transfer Case Range Selection Switch Circuit problem in a GMC Sierra?

- While some basic troubleshooting and repairs can be done by DIY enthusiasts, diagnosing and repairing complex electrical issues like this may require professional expertise.

10. How can I prevent OBDII code B2725 from occurring in my 2017 GMC Sierra?

- Regular maintenance, checking for any signs of transfer case issues, and addressing them promptly can help prevent the occurrence of this OBDII code.