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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> General Information >> Computer Relearn Procedures >> General Motors (Trucks & Vans) >> Powertrain Control Module >> PCM Programming (Cab & Chassis, Chevy Express, Cutaway, RV Cutaway, Savana, Savana Camper Special & Savana Special - 6.5L)

PCM Programming (Cab & Chassis, Chevy Express, Cutaway, RV Cutaway, Savana, Savana Camper Special & Savana Special - 6.5L)

  1. Verify the following for the setup:
    • The battery is charged.
    • The ignition is ON.
    • The battery/cigarette lighter connection is secure.
    • The Data Link Connector (DLC) is attached.
  2. Perform the programming. See the up to date Techline terminal/equipment for user instructions.
  3. Perform the Passlock™ Learn Procedure. See THEFT DETERRENT SYSTEM COMPONENTS .
  4. After the vehicle has been programed, operate the vehicle until the coolant temperature is more than 170°F (77°C). This will allow the Top Dead Center (TDC) offset to be programed. See FUEL INJECTION PUMP TOP DEAD CENTER OFFSET ADJUSTMENT .
  5. Check the Data list for a TDC offset.
  6. If the PCM fails to reprogram, do the following:
    • Check all the Powertrain Control Module (PCM) connections.
    • Check the Techline terminal/equipment for the latest software version.
    • Try again to reprogram the PCM. If the PCM fails again, replace the PCM. See appropriate REMOVAL, OVERHAUL & INSTALLATION article.
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