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Home >> GMC >> 2021 >> Terrain SLT, 4WD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Vehicle Access System >> Diagnostic Information and Procedures >> DTC B1474 or B3849 >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Signal - B27D Door Handle Switch - Driver Exterior B3849 02 1 1 -
Signal - B27P Door Handle Switch - Passenger Exterior B1474 02 2 2 -
Ground - A24D Door Handle Assembly - Driver Exterior - 1 - -
Ground - A24P Door Handle Assembly - Passenger Exterior - 2 - -
  1. B27D Door Handle Switch - Driver Exterior = Disabled
  2. B27P Door Handle Switch - Passenger Exterior = Disabled
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