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2000 CHEVROLET IMPALA
3.8L V6•FWD•AUTOMATIC•gas
10 active safety recalls on this vehicle — view recalls
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Repairs0Labor493Torque4212Fluid7DTC1003Battery1Maintenance0Recalls10
P1632high severityPowertrain

Theft Deterrent System - Fuel Disabled

on 2000 Chevrolet Impala 3.8L V6 · FWD

What this code means

The theft deterrent system has actively disabled fuel delivery because the correct key/password was not verified. The PCM is preventing the engine from running as an anti-theft measure.

Symptoms

  • Engine will not start
  • Engine cranks but does not fire
  • Security light illuminated
  • No fuel injector pulse

Common causes

  • Incorrect key used
  • Passlock sensor failure
  • BCM not sending fuel enable signal
  • New BCM not programmed to vehicle
  • Key transponder failure

Diagnostic steps

  1. Verify correct key is being used
  2. Check security light behavior
  3. Perform theft deterrent relearn procedure
  4. Test fuel enable circuit
  5. Check BCM programming

Repair notes

Perform security relearn procedure. If using correct key and relearn fails, replace Passlock sensor. Ensure BCM is programmed to the vehicle.

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