00:00Identifying a faulty 4WD transfer case position sensor in GMC Sierra 1500,
00:06the transfer case position sensor is an important part of your GMC's four-wheel drive system.
00:12Among other things, it keeps track of transfer case position,
00:17communicates whether the vehicle is in 2WD, 4WD, high, low, or neutral,
00:24helps the AQ in adjusting power distribution between the axles,
00:28ensures smooth engagement,
00:30disengagement of 4WD system,
00:33helps with the dashboard indicator.
00:36Why it may malfunction?
00:41Issues that may result in transfer case position sensor malfunction include
00:46natural wear due to prolonged use,
00:50impaired sensor function due to corrosion and debris buildup,
00:54circuit powering the system might have faulty wiring or connectors,
00:57inherent defects from the manufacturing process.
01:01How to know if your GMC Sierra 1500's transfer case sensor is giving up?
01:08If you suspect a glitch in your GMC Sierra 1500 transfer case sensor,
01:13look for the following signs.
01:14One inability to shift between 2WD and 4WD.
01:21GMC made vehicles or truly power machines with advanced driver assistance features like
01:26auto-track 2-speed transfer case.
01:33You won't be able to switch between 2WD and 4WD modes.
01:38If transfer case is giving up,
01:39issues with the transfer case sensor may also activate service 4WD message.
01:52The warning message could also mean numerous other things that need to be addressed.
01:563. Inconsistent engagement of 4WD.
02:04A defective transfer case position sensor may even cause the 4WD system to engage
02:09unpredictably and erratically.
02:124. Failure to engage or disengage 4WD won't be able to respond to the driver's input if the
02:25transfer case position sensor is faulty.
02:29Failing to engage, disengage as intended, may contribute to handling related issues.
02:345. Delayed or jerky movements during gear shift.
02:37It may indicate a problem with the transfer case position sensor.
02:55Diagnostic procedure.
03:001. Carefully examine the sensor for visible signs of wear or damage.
03:052. Use an OBD-2 scanner to scan for diagnostic trouble codes related to the transfer case or sensor.
03:143. Check if the sensor's voltage output aligns with manufacturer specifications.
03:194. Inspect wires for signs of damage or disconnections.
03:25Wrapping up.
03:26If you suspect a fault in your GMC Sierra 1500's transfer case position sensor, don't ignore it.
03:39Promptly address any such issues to make sure that your vehicle operates smoothly.
03:435. String to make sure that your vehicle is a driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver's driver
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