2009 CADILLAC CTS fuel cap release

Service............................................................5-3
Accessories and Modications..........................5-3
California Proposition 65 Warning.....................5-4
California Perchlorate Materials Requirements.....5-4
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of the
Vehicle......................................................5-5
Fuel................................................................5-5
Gasoline Octane............................................5-6
Gasoline Specications....................................5-6
California Fuel...............................................5-7
Additives.......................................................5-7
Fuels in Foreign Countries...............................5-8
Filling the Tank..............................................5-8
Filling a Portable Fuel Container.....................5-11
Checking Things Under the Hood....................5-12
Hood Release..............................................5-12
Engine Compartment Overview.......................5-14
Engine Oil...................................................5-18
Engine Oil Life System..................................5-21
Engine Cover...............................................5-23
Engine Air Cleaner/Filter................................5-25
Automatic Transmission Fluid.........................5-29
Manual Transmission Fluid.............................5-29
Hydraulic Clutch...........................................5-30
Cooling System............................................5-31
Engine Coolant.............................................5-32Coolant Surge Tank Pressure Cap..................5-37
Engine Overheating.......................................5-37
Overheated Engine Protection
Operating Mode.........................................5-39
Power Steering Fluid.....................................5-40
Windshield Washer Fluid................................5-41
Brakes........................................................5-42
Battery........................................................5-45
Jump Starting...............................................5-46
All-Wheel Drive..............................................5-51
Rear Axle.......................................................5-52
Headlamp Aiming...........................................5-53
Bulb Replacement..........................................5-57
High Intensity Discharge (HID) Lighting............5-57
Halogen Bulbs..............................................5-57
Front Turn Signal and Fog Lamps...................5-58
License Plate Lamp......................................5-59
Replacement Bulbs.......................................5-59
Windshield Wiper Blade Replacement..............5-59
Tires..............................................................5-61
Winter Tires.................................................5-62
Tire Sidewall Labeling...................................5-63
Tire Terminology and Denitions.....................5-66
Ination - Tire Pressure.................................5-69
High-Speed Operation...................................5-70
Tire Pressure Monitor System.........................5-71
Section 5 Service and Appearance Care
5-1

The fuel cap is behind a hinged fuel door on the
passenger side. To open the fuel door, push the
rearward center edge in and release and it will open.To remove the fuel cap, turn it slowly counterclockwise.
The fuel cap has a spring in it; if the cap is released
too soon, it will spring back to the right.
5-9