SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 130 (COMPUTER RELEARN PROCEDURES)CHRYSLER CORP.POWERTRAIN CONTROL MODULE PROGRAMMING (RAM PICKUP 2500 & 3500 - GASOLINE, RAM VAN & RAM WAGON)
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Powertrain Control Module Programming (Ram Pickup 2500 & 3500 - Gasoline, Ram Van & Ram Wagon)

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Powertrain Control Module Programming (Ram Pickup 2500 & 3500 - Gasoline, Ram Van & Ram Wagon)
WARNING: This page does not describe the selected car, but rather 120 other vehicles, including the 2002 Saturn Vue, 2002 Saturn SL2, 2002 Saturn SL1, 2002 Saturn SL, and 2002 Saturn SC2. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If replacing Powertrain Control Module (PCM), the correct vehicle mileage and Vehicle Identification Number (VIN) must be programmed into PCM to prevent Diagnostic Trouble Codes (DTC) from being set in Controller Anti-Lock Brake (CAB) module and Air Bag Control Module (ACM).

Connect scan tool to Data Link Connector (DLC). DLC is located below driver's side of instrument panel. Turn ignition on. Using scan tool, enter correct VIN and mileage into PCM. Using scan tool manufacturer's instructions, clear DTCs from CAB module and ACM.

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.