B1586 GMC Possible Causes
- Faulty Left Mirror or Right Mirror
- Left Mirror or Right Mirror harness is open or shorted
- Left Mirror or Right Mirror circuit poor electrical connection
First diagnose B1586 GMC code
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 terminals.
Cost of diagnosing the B1586 GMC code
Labor: 1.0The cost of diagnosing the B1586 GMC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
B1586 GMC Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B1586 GMC MeaningThe Left Mirror and the Right Mirror Horizontal Position Sensors are Potentiometers. The Driver Door Module (DDM) and the Passenger Door Module (PFDM) determine the horizontal position of the mirrors based on the signal voltage from these sensors. The code will be set when the signal voltage of the mirror horizontal position sensor is above or below the range limits, within 10%, for 30 seconds in the requested position. The voltage range limits depend upon what the actual voltage of the 5 volt reference circuit is, and will vary from vehicle to vehicle and from module to module.
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