2006 Cadillac CTS-V Owner's Manual - Page 395

(h) Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions: − In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher. − In hilly or mountainous terrain. − When doing frequent trailer towing. − Uses such as high performance operation. If you do not use your vehicle under any of these conditions, the fluid and filter do not require changing. (i) Drain, flush, and refill cooling system. This service can be complex; you should have your dealer perform this service. See Engine Coolant on page 5-28 for what to use. Inspect hoses. Clean radiator, condenser, pressure cap, and filler neck. Pressure test the cooling system and pressure cap. (k) A fluid loss in any vehicle system could indicate a problem. Have the system inspected and repaired and the fluid level checked. Add fluid if needed. (l) Change fluid if the vehicle is used for high performance operation. (m) Change fluid whenever the vehicle has been driven for 3,000 miles (5 000 km) with the transmission temperature at 290°F (143°C) or higher without using an auxiliary fluid cooler. See Message Center (CTS-V) on page 3-47 and Transmission Fluid Hot Message on page 3-50. (n) If you drive regularly under dusty conditions, inspect the filter at each engine oil change. (p) Visually inspect belt for fraying, excessive cracks, or obvious damage. Replace belt if necessary. Owner Checks and Services These owner checks and services should be performed at the intervals specified to help ensure the safety, dependability and emission control performance of your vehicle. Your GM Goodwrench® dealer can assist you with these checks and services. Be sure any necessary repairs are completed at once. Whenever any fluids or lubricants are added to your vehicle, make sure they are the proper ones, as shown in Recommended Fluids and Lubricants on page 6-13. 6-9