Poor Fuel Economy: Preliminary
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Pontiac Grand Prix, 2003 Pontiac Bonneville, 2003 Chevrolet Monte Carlo, 2003 Chevrolet Impala, and 2003 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Perform preliminary inspection. See PRELIMINARY INSPECTION . Check for Technical Service Bulletins (TSBs).
- Review the owner's driving habits.
- Is A/C ON full time (Defroster mode ON)?
- Are tires at correct pressure?
- Are tires and wheels the correct size?
- Are excessively heavy loads being carried?
- Is acceleration too much, too often?