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HOMESERVICE MANUALSCHEVROLET2015SILVERADO 1500 HIGH COUNTRY, 5.3L ENG VIN C, RWD, GASREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOLLISION/AVOIDANCEOBJECT DETECTION AND PEDESTRIAN PROTECTION SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC B356A: VEHICLE DIRECTION WARNING SWITCHCIRCUIT/SYSTEM TESTING
2015 Chevrolet Silverado 1500 High Country, 5.3L Eng VIN C, RWD, Gas

Circuit/System Testing

2015 Chevrolet Silverado 1500 High Country, 5.3L Eng VIN C, RWD, GasSECTION Circuit/System Testing
  1. Ignition ON and all vehicle systems OFF, disconnect the harness connector at the S48A Multifunction Switch - Instrument Panel. It may take up to 2 min for all vehicle systems to power down.
  2. Test for less than 10 Ω between the ground circuit terminal 14 and ground.
    • If 10 Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the ground circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • If less than 10 Ω 
  3. Verify the scan tool Lane Departure Warning Switch Status parameter is Open.
    • If not Inactive 
    1. Ignition OFF, disconnect the harness connector at the K109 Frontview Camera Module.
    2. Test for infinite resistance between the K109 Frontview Camera Module signal circuit terminal 10 and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the K109 Frontview Camera Module.
    • If Inactive 
  4. Install a 3 A fused jumper wire between the signal circuit terminal 8 and ground.
  5. Verify the scan tool Lane Departure Warning Switch Status parameter is Closed.
    • If not Closed 
    1. Ignition OFF, disconnect the harness connector at the K109 Frontview Camera Module, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V
    3. Ignition OFF
    4. Test for less than 2 Ω in the signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K109 Frontview Camera Module.
    • If Closed 
  6. Test or replace the S48A Multifunction Switch - Instrument Panel.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.