Car Problem Reports

Chevrolet Silverado 2500 HD 4WD Transfer Case Position Sensor/Selector Switch May Fail

Chevrolet Silverado 2500 HD Problem
12 Reports
Me Too

Model Years Affected: 2001, 2002, 2003, 2004, 2005

Drive Train Affected: 4WD

Average Mileage: 155,337 mi (58,000 mi - 275,000 mi)


The 4WD transfer case encoder motor position sensor or the selector switch may fail causing the service 4WD message to be displayed. Fault code(s) stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed.

  • Visitor, , 4WD, 62,000 mi

    SELECTOR SWITCH HAS HAD 2 BLOWN FUSES. Now I have an intermittent selector switch problem where I start up the engine and put it in drive with 2wd led lit up on selector switch and the truck remains in neutral. Check engine light comes on. The code denotes a defective TFP MANUAL VALVE POSITION SWITCH IN THE TRANSMISSION. AFTER MANY TIME RESTARTING MOTOR i CAN ENGAGE 4X4 HIGH AND DRIVE HOME. Any Ideas??

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  • Visitor, , 4WD, 189,465 mi

    information center displays service 4x4 changed 4x4 transfer case selector same issue service 4x4

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  • Visitor, , 4WD, 275,000 mi

    service 4wd message came on. replaced position switch

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  •  Rookie

    Replaced 4WD electrical engage system one year ago and the problem has now returned. The cost was over $800.00 for this repair.

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