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 stored in Controller Anti-Lock Brake (CAB) module, Air Bag Control Module (ACM) and Sentry Key Immobilizer Module (SKIM). If replacing PCM and vehicle is equipped with SKIM, secret key data must also be updated to enable engine starting. See PROGRAMMING .

Inspect vehicle to ensure all engine components are connected properly. Reassemble and reconnect components as necessary. Using scan tool, clear DTCs. Perform generator output test. See GENERATORS & REGULATORS - CARS article in STARTING & CHARGING SYSTEMS.
Start engine and hold engine speed at 2000 RPM for at least 30 seconds. Cycle ignition off and on. Using scan tool, read DTCs. If DTC resets, or another DTC sets, perform appropriate test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
If another symptom exists, go to appropriate TROUBLE SHOOTING - NO CODES article for additional testing. If no DTCs are present and all components are functioning properly, repair is complete.

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.

Safety Warning

Powertrain Verification Test VER-3

Use the Manual With the Right Hardware

When to See a Mechanic

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