B2725 on 2015-2020 GMC Yukon XL — Transfer Case Mode/Range Selector Switch Circuit
1 vehicles · 1 makes · $300-$800 repair
Most Reported On
B2725 is an OBD-II diagnostic trouble code meaning “Transfer Case Mode/Range Selector Switch Circuit.” B2725 is most commonly defined on GM 4WD vehicles as a fault in the transfer case (4WD) mode/range selector switch circuit. The transfer case control module or BCM monitors the dash-mounted 4WD selector switch and sets this code when it reads an invalid or out-of-range signal. It typically triggers a 'Service 4WD' message and can leave the 4WD system stuck in its current mode until repaired. This code is most commonly reported on 2015-2020 GMC Yukon XL, with repair costs ranging from $300 to $800.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose B2725, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
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A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
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BlueDriver Pro Bluetooth Scanner
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Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
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LAUNCH CRP123X OBD-II Scanner
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Autel MaxiCOM MK808S Diagnostic Tool
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Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
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FAQ
What does B2725 mean?
B2725 stands for "Transfer Case Mode/Range Selector Switch Circuit." B2725 is most commonly defined on GM 4WD vehicles as a fault in the transfer case (4WD) mode/range selector switch circuit. The transfer case control module or BCM monitors the dash-mounted 4WD selector switch and sets this code when it reads an invalid or out-of-range signal. It typically triggers a 'Service 4WD' message and can leave the 4WD system stuck in its current mode until repaired.
What are the most common causes of B2725?
The most common causes of B2725 are: Faulty 4WD/transfer case selector switch (most common), Worn or corroded switch internal contacts, Damaged wiring between switch and module, Corroded or loose connector at the switch, Open or shorted circuit, Transfer case control module fault. The specific cause varies by vehicle.
How much does it cost to fix B2725?
Repair costs for B2725 range from $300 to $800, depending on the vehicle and root cause.
Which vehicles are affected by B2725?
Au7o has documented B2725 across 1 vehicle models from 1 manufacturers: GMC.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.