Inspect fuel system for damage or leaks.

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Inspect exhaust system for loose or damaged components.

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Replace engine air cleaner filter. See "Engine Air Cleaner/Filter" in your owner manual.

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Cadillacs only: Replace passenger compartment air filter. See footnote (g).

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Change automatic transmission fluid and filter (except 3.6L G6) (severe service). See footnotes (h) and (o).

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Corvette, Impala, LaCrosse, Lucerne, 3.6L G6, 3.9L G6, and Cadillacs only: Change automatic transmission fluid and filter (normal service). See footnote (o).

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STS and SRX all-wheel-drive vehicles used for trailer towing: Change transfer case fluid.

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Replace spark plugs. An Emission Control Service.

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Corvette, Impala, V6 Malibu, LaCrosse, V6 Lucerne, Grand Prix, and G6 only: Inspect spark plug wires. An Emission Control Service.

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Except DTS Professional Vehicle: Engine cooling system service (or every five years, whichever occurs first). An Emission Control Service. See footnote (i).

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DTS Professional Vehicle: Engine cooling system service (or every five years, whichever occurs first). An Emission Control Service. See footnote (i).

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STS and XLR with 4.4L supercharged engine only: 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 (l).

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CTS, STS, and SRX only: If using DOT-4 brake fluid, change brake fluid at a regular maintenance service every two years. See footnote (n).