Ignition Switched Power Run/Crank Relay Circuit
Table of contents
B1428 GMC Possible Causes
- Faulty Ignition Switched Power Run/Crank Relay
- Ignition Switched Power Run/Crank Relay harness is open or shorted
- Ignition Switched Power Run/Crank Relay circuit poor electrical connection
- Faulty Body Control Module (BCM)
How do I fix code B1428 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.
Cost of diagnosing the B1428 GMC code
The cost of diagnosing the B1428 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B1428 GMC Description
The Body Control Module (BCM) controls the Run/Crank relay through the run/crank relay coil control circuit by applying voltage to the circuit. The Run/Crank relay is energized when the ignition switch is in ON or START, or when a remote start is requested. The OBDII codes set when the BCM detects a short to ground in the run/crank relay coil control circuit.