Fuel Lockout Cycle

1999 GMC Forward Control 5.7 R, AutomaticSECTION Fuel Lockout Cycle
WARNING: This page is about a different car, the 2002 GMC Savana, 2002 Chevrolet Chevy Express, 2001 GMC Savana, and 2001 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

When Passlock(tm) module receives a password which is incorrect or a password which indicates tamper and PCM disables fuel injectors, fuel injectors remain disabled for 10 minutes even if the ignition switch is turned from RUN position to OFF position. Passlock(tm) system requires 3 consecutive lockout cycles in order to complete 30 minute learn procedure for a changed component.

RENDER: 1.0x

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When to See a Mechanic

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

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