U18D1 GMC - Lost Communication With Transmission Range Control Module On Powertrain Expansion CAN Bus
U18D1 GMC Possible Causes
- Faulty Transmission Range Control Module
- Transmission Range Control Module harness is open or shorted
- Transmission Range Control Module circuit poor electrical connection
How is the U18D1 GMC code repair?Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
What is the cost to diagnose the U18D1 GMC code
Labor: 1.0The cost to diagnose the U18D1 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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- Engine Light ON (or Service Engine Soon Warning Light)
U18D1 GMC MeaningDevices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. The Diagnostic Trouble Code (DTC) will set a supervised periodic message that includes the transmitter device availability that has not been received.
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