Contents Wiring diagrams Section: Exterior Lights All sections

C0277 4B (2) GMC Acadia I

  1. Ignition ON, verify that no other brake pedal position sensor DTCs are set. If other brake pedal sensor DTCs are set, diagnosis those DTCs first.
  2. Perform the scan tool BPP Sensor Calibration procedure. Refer to «Brake Pedal Position Sensor Calibration»(ref-365239-S15983671562010070600000) .
  3. Observe the scan tool BPPS Status parameter. The reading should be Learned. If not the specified value, replace the brake pedal position sensor. If the DTC resets, replace the BCM.