B0780 GMC - Four Wheel Drive Low Range Indicator Circuit
B0780 GMC Possible Causes
- Faulty Transfer Case Select Switch
- Transfer Case Select Switch harness is open or shorted
- Transfer Case Select Switch circuit poor electrical connection
- Faulty Transfer Case Shift Control Module
How do I fix code B0780 GMC?Check 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.
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Cost of diagnosing the B0780 GMC code
Labor: 1.0The cost of diagnosing the B0780 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.
- Engine Light ON (or Service Engine Soon Warning Light)
B0780 GMC DescriptionThe Four Wheel Drive Low Range (4LO) indicator circuit consists of an LED dimming supply circuit and a 4LO indicator control circuit. When the 4LO mode is selected, current is supplied to the 4LO indicator by the LED dimming supply circuit, traveling through the 4LO indicator LEDs, at which time the transfer case shift control module supplies the ground through the 4LO indicator control circuit.
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