U3889 Gmc Savana OBD Code

OBD/2 U3889 error code description and symptoms.

The issue covered by the bulletin involves a power steering noise/whine or fluid leak from the power steering pump, gear or high pressure side power steering hose during extreme low outdoor temperature operation.

On some transmissions, such as automated manual transmissions or automatic transmissions with manual mode, the GSP switch lets the TCM know whether or not the driver has selected automatic or manual function. On manual transmissions, the GSP switch informs the TCM which gear the driver is selecting, and may function as a neutral safety switch, depending on system design. The TCM also uses the gate select position switch to monitor transmission operation. For example, if the driver selects manual mode and selects 3rd gear on an automatic transmission, the TCM may monitor speed sensors to detect clutch and brake slippage.

U3889 Gmc Savana Error Code Repair Process :

If your transmission transfer case rear shaft speed sensor circuit failure check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system U3889 and engine control unit are in charge of monitoring a bunch of different transmission transfer case rear shaft speed sensor circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

Difficulty Level (Expert)

Repair Time (60 Min.)

Cost Prediction : $ 80-120

Common Causes of Gmc Savana U3889 OBD2 Code

A common cause of code U3889 is the failure of Transmission Transfer Case Rear Shaft Speed Sensor Circuit Failure, but there are several other possible causes as well, such as ;

• Exhaust gas leaks
• Faulty spark plug (s)
• Faulty Fuel injector
• Faulty TCM or TCM programming

U3889 is a kind of Network Trouble Code U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

U3889 code for other Gmc cars

You can view according U3889 DTC for your car model. We selected several models to see obd2 solutions click and view it.

• U3889 Gmc Acadia
• U3889 Gmc Autonomy
• U3889 Gmc Canyon
• U3889 Gmc Envoy
• U3889 Gmc Firebird
• U3889 Gmc Jimmy
• U3889 Gmc Safari
• U3889 Gmc Sierra
• U3889 Gmc Sonoma
• U3889 Gmc Suburban
• U3889 Gmc Terra
• U3889 Gmc Terracross
• U3889 Gmc Terradyne
• U3889 Gmc Terrain
• U3889 Gmc Typhoon
• U3889 Gmc Yukon

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