Inspect the fuel system for damage or leaks.

X

X

X

X

X

X

Inspect the exhaust system for loose or damaged components.

X

X

X

X

X

X

Replace the engine air cleaner filter. Refer to Air Cleaner Element Replacement .

X

X

X

X

X

X

6-speed manual transmission only: Change clutch fluid. Refer to footnote (18) in Maintenance Footnotes .

X

X

X

X

X

X

Allison Transmission only: For severe service, change the automatic transmission fluid and external transmission filter. Refer to footnote (10) in Maintenance Footnotes .

X

X

X

X

X

X

Allison Transmission only: For normal service, change the automatic transmission fluid and external transmission filter.

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X

--

X

--

X

Change the transfer case fluid. Refer to footnote (9) in Maintenance Footnotes .

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X

--

X

--

X

Except Allison: For sever service, Change automatic transmission fluid and filter. Refer to footnote (15) in Maintenance Footnotes .

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X

--

X

--

X

Except Allison: For normal service, Change automatic transmission fluid and filter.

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--

--

X

--

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Four-wheel drive with automatic transfer case only: Change transfer case fluid. Refer to footnote (13) in Maintenance Footnotes .

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X

--

X

--

X

Inspect the evaporative control system. Refer to footnotes (1) and (16) in Maintenance Footnotes .

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X

--

X

--

X

Replace the spark plugs and inspect spark plug wires.

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--

--

X

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Engine cooling system service or every 5 years, whichever occurs first. Refer to footnote (11) in Maintenance Footnotes .

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--

--

--

--

X

Inspect the engine accessory drive belt.

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--

--

--

--

X

5-speed manual transmission only: Change manual transmission fluid.

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--

--

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X