SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN PASSENGER EXTENDED, 5.0 MREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMSTHEFT DETERRENT SYSTEMDESCRIPTION & OPERATIONCHANGING THE PASSLOCK(TM) COMPONENTS
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 M

CHANGING THE PASSLOCK(tm) COMPONENTS

2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 MSECTION CHANGING THE PASSLOCK(tm) COMPONENTS

The following components contain codes or passwords, or must learn codes or passwords for the Passlock(tm) system to allow the vehicle to start.

  • Ignition Lock Cylinder Case (Passlock(tm) Sensor)
  • Theft Deterrent Control Module (Passlock(tm) Module)
  • Powertrain Control Module (PCM)
If any of these parts are replaced, a learn procedure must be performed. Go to PROGRAMMING THEFT DETERRENT SYSTEM COMPONENTS  . If parts are replaced and a learn procedure is not performed, the engine will crank and will not run or will start and stall for 10 minutes. This is long tamper mode. If this occurs, system must go through a long tamper mode cycle. During this time, SECURITY indicator will flash for 10 minutes and DTC B3031 will set. Passlock(tm) module and PCM require full 10 minutes in order to complete a learn cycle. Ignition switch must remain in RUN position until SECURITY indicator stops flashing. Cycle will need to be repeated if ignition switch does not remain in RUN position.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.