B144B GMC - Run/Crank Power Relay Circuit
B144B GMC Possible Causes
- Faulty Run/Crank Power Relay
- Run/Crank Power Relay harness is open or shorted
- Run/Crank Power Relay circuit poor electrical connection
- Faulty Body Control Module (BCM)
How is the B144B 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 B144B GMC code
Labor: 1.0The cost to diagnose the B144B 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)
B144B GMC MeaningThe Body Control Module (BCM) controls the ignition main relay through the control circuit by applying voltage to the ignition run/crank relay control circuit. The ignition main relay is energized when the ignition is in the ON, CRANK positions, or when a remote start is requested.
The keyless entry control module controls the backup power for the ignition main relay through the control circuit by applying voltage to the ignition circuit. This circuit is a pass-thru in the BCM and will energize the ignition circuit when the vehicle is in the ON, CRANK positions or when a remote start is requested.
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