The following services should be performed at the first maintenance service after the indicated miles (kilometers) shown for each item.
Service and Miles (Kilometers) | 25,000 (40 000) | 50,000 (80 000) | 75,000 (120 000) | 100,000 (160 000) | 125,000 (200 000) | 150,000 (240 000) |
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Inspect fuel system for damage or leaks. | · | · | · | · | · | · |
Inspect exhaust system for loose or damaged components. | · | · | · | · | · | · |
Replace engine air cleaner filter. See Engine Air Cleaner/Filter . See footnote (n). |
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Replace passenger compartment air filter. See footnote (g). | · | · | · | · | · | · |
Change automatic transmission fluid and filter (severe service). See footnote (h). |
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Change automatic transmission fluid and filter (normal service). |
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CTS-V Only: Change 6-speed manual transmission fluid (severe service only). See footnote (o). |
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All-wheel-drive vehicles: Change transfer case fluid (severe service). See footnotes (q) and (r). |
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All-wheel-drive vehicles: Change transfer case fluid (normal service). See footnote (q). |
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CTS-V Only: Change hydraulic clutch fluid. See footnote (o). | · | · | · | · | · | · |
CTS-V Only: Change rear axle fluid (severe service only). See footnote (o). |
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CTS-V Only: Change brake fluid (severe service only). See footnote (o). | · | · | · | · | · | · |
Replace spark plugs. An Emission Control Service. |
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Engine cooling system service (or every five years, whichever occurs first). An Emission Control Service. See footnote (i). |
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6.2L Supercharged V8 Engine: Intercooler system service (or every five years, whichever occurs first). See footnote (p). |
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Inspect engine accessory drive belt. An Emission Control Service. See footnote (m). |
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CTS-V Only: Inspect supercharger drive belt. See footnote (m). |
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If using DOT-4 brake fluid, change brake fluid at a regular maintenance service every two years. See footnote (j). |
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