Section 378 (Engine Controls Self-Diagnostics - 3.1L Engine): Summary
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
If no Diagnostic Trouble Codes (DTC) are present and a no-start condition exists, go to NO-START DIAGNOSIS in BASIC DIAGNOSTIC PROCEDURES - 3.1L CENTURY, GRAND PRIX & MALIBU article. If no DTCs are present and a driveability condition exists, go to TROUBLE SHOOTING - NO CODES - 3.1L CENTURY, GRAND PRIX & MALIBU article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).