Additional Checks
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.
- See EXHAUST RESTRICTION under EXHAUST SYSTEM CHECK under EMISSION SYSTEMS & SUB-SYSTEMS in SYSTEM & COMPONENT TESTING - 3.1L CENTURY, GRAND PRIX & MALIBU article.
- Check exhaust system for damaged or collapsed pipes.
- Check mufflers for heat distress or possible internal failure.
- For possible plugged catalytic converter.
- Check for proper Torque Converter Clutch (TCC) operation. Check the Torque Converter Clutch (TCC) operation. See appropriate DIAGNOSIS article in TRANSMISSIONS.