B2180 04: Right Seat Back Heater Circuit Open
B2180 0A: Right Seat Back Heater Circuit Rate of Change Below Threshold
B2180 0B: Right Seat Back Heater Circuit Current Above Threshold
B2180 0C: Right Seat Back Heater Circuit Current Below Threshold
B2180 0D: Right Seat Back Heater Circuit Resistance Above Threshold
B2180 0E: Right Seat Back Heater Circuit Resistance Below Threshold
B2180 1F: Right Seat Back Heater Circuit Intermittent
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 pins.
The cost to diagnose the B2180 GMC code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.
When the heated seat function is active, the Memory Seat Module (MSM) supplies battery voltage through the element supply voltage circuit to the seat heater elements. The module controls the seat temperature by providing a PWM ground through the heated seat element control circuit to the seat heater elements. The module then monitors the current flow through the heating element and the temperature sensor rate of change to verify correct operation. The OBDII code sets when the module detects that the set point temperature is not to factory specifications.
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