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2016 CHEVROLET SILVERADO 1500
5.3L V8 EcoTec3 L83•RWD•AUTOMATIC•gas
11 active safety recalls on this vehicle — view recalls
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Repairs421Labor499Torque4352Fluid8DTC1242Battery1Maintenance0Recalls11
P1442moderate severityPowertrain

EVAP Vacuum Switch Circuit

on 2016 Chevrolet Silverado 1500 5.3L V8 EcoTec3 L83 · RWD

What this code means

The EVAP system vacuum switch circuit is reading incorrectly. Related to generic EVAP codes like P0440.

Symptoms

  • Check engine light on
  • Fuel odor
  • Failed emissions test

Common causes

  • Faulty EVAP vacuum switch
  • Damaged switch wiring
  • Blocked or leaking EVAP hose
  • Bad purge valve

Diagnostic steps

  1. Scan for stored codes
  2. Test EVAP vacuum switch continuity
  3. Inspect EVAP hoses and connections
  4. Perform smoke test on EVAP system
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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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