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2025 CHEVROLET TAHOE
5.3L V8 L84•4WD•AUTOMATIC•gas
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Repairs0Labor496Torque152Fluid10DTC2017Battery1Maintenance0Recalls1
P0464low severityPowertrain

Fuel Level Sensor Circuit Intermittent

on 2025 Chevrolet Tahoe 5.3L V8 L84 · 4WD

What this code means

The fuel level sensor signal is fluctuating erratically or dropping out intermittently. This is often caused by a worn sending unit or loose wiring.

Symptoms

  • Erratic fuel gauge readings
  • Check engine light on
  • Inaccurate fuel level display

Common causes

  • Worn fuel level sending unit
  • Loose or corroded connector
  • Damaged wiring in circuit
  • Faulty PCM input

Diagnostic steps

  1. Monitor fuel level signal in live data
  2. Inspect sending unit connector and wiring
  3. Wiggle-test harness for dropouts
  4. Replace fuel level sensor if erratic
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