5.Then replace the pressure cap. Be sure the pressure cap is hand-tight and fully seated.

6.Verify coolant level after engine is shut off and the coolant is cold. If necessary, repeat coolant fill procedure Steps 1 through 6.

Engine Fan Noise

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

Power Steering Fluid

See Engine Compartment Overview on page 406 for reservoir location.

When to Check Power Steering Fluid

It is not necessary to regularly check power steering fluid unless you suspect there is a leak in the system or you hear an unusual noise. A fluid loss in this system could indicate a problem. Have the system inspected and repaired.

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Cadillac 2007 owner manual Engine Fan Noise, When to Check Power Steering Fluid
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2007 specifications

The 2007 Cadillac lineup showcased a blend of luxury, performance, and innovative technology that exemplified the brand’s commitment to quality and elegance. With models like the Cadillac CTS, STS, and Escalade, Cadillac aimed to cater to the diverse preferences of luxury car enthusiasts.

The 2007 Cadillac CTS was a standout model, renowned for its bold design and dynamic performance. Sporting a more aggressive exterior compared to its predecessors, the CTS featured a distinctive front grille and sharp lines that highlighted its sporty character. Under the hood, buyers had the option of a 2.8-liter V6 engine producing 210 horsepower or a more robust 3.6-liter V6 engine delivering 255 horsepower. Both engines were paired with a smooth-shifting six-speed automatic transmission, offering a blend of power and efficiency.

One of the significant technological advancements in the 2007 CTS was its availability of the Cadillac User Experience (CUE) system. This advanced infotainment system included a touchscreen interface, Bluetooth connectivity, and a premium audio system, providing drivers with seamless access to entertainment and navigation.

The Cadillac STS, another model from the 2007 lineup, catered to those seeking a luxurious sedan experience. Offering a spacious interior wrapped in premium materials, the STS featured heated leather seats and an intuitive dashboard layout. Power options ranged from a 3.6-liter V6 to a powerful 4.6-liter V8 engine, which allowed for an exhilarating driving experience. The STS also included innovative safety features such as an advanced airbag system and electronic stability control, ensuring peace of mind during every drive.

The Cadillac Escalade, a flagship SUV, epitomized luxury in the 2007 lineup. With its commanding presence and spacious interior, the Escalade won over families and celebrities alike. Offering a 6.2-liter V8 engine, it produced an impressive 403 horsepower, allowing it to excel in performance despite its size. High-quality materials adorned the cabin, and amenities like a rear-seat entertainment system and Bose surround sound system elevated the driving experience.

Overall, the 2007 Cadillac models combined luxurious features, cutting-edge technology, and robust performance, solidifying Cadillac's place as a leader in the luxury automotive market. These vehicles were designed not just to meet the expectations of discerning customers but to exceed them, setting a standard for future releases in the automotive industry.
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