Engine Fan

The vehicle has electric cooling fans. The fans spinning at low speed during most everyday driving might be heard. The fans can turn off if no cooling is required. Under heavy vehicle loading, trailer towing, and/or high outside temperatures, or if operating the air conditioning system, the fans can change to high speed and an increase in fan noise might be heard. This is normal and indicates that the cooling system is functioning properly. The fans change to low speed when additional cooling is no longer required.

    See also:

    Vehicle Overview
    Cadillac stepped into rear-wheel-drive territory with its STS sedan, which replaced the front-wheel-drive Seville for 2005. Built on a Sigma-based architecture, like the company's smaller CTS seda ...

    Safety
    Six standard airbags include side-impact, side curtain-type and a new dual-depth front passenger unit that deploys either shallow or deep depending on crash severity, seat belt usage and occupant ...

    Sunroof
    On vehicles with a sunroof, the switches are on the overhead console. The sunroof only operates when the ignition is in ON/RUN/START or ACC/ACCESSORY, or in Retained Accessory Power (RAP). See ...