GM Service Manual Online
For 1990-2009 cars only

The following services should be performed at the first maintenance service (I or II) after the indicated miles (kilometers) shown for each item.

Additional Required Services

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)

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 .

 

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For vehicles used for trailer towing: Change transfer case fluid.

 

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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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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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Inspect engine accessory drive belt. An Emission Control Service. See footnote (l).

 

 

 

 

 

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If using DOT-4 brake fluid, change brake fluid at a regular maintenance service every two years. See footnote (m).