gray gables

Coming up on my 100,000 mile check up, what should I do to my truck, it's a 1500 z71 4x4 extended cab, 2007 left over model, looking for some tips, thanks matt

Chevrolet Customer Service

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- Inspect fuel system for damage or leaks.
- Inspect exhaust system for loose or damaged components.
- Replace engine air cleaner filter.
- Change automatic transmission fluid and filter.
- Change transfer case fluid.
- Inspect evaporative control system.
- Replace spark plugs and inspect spark plug wires.

Those are in addition to the regular maintenance.

I hope this information is useful. For your reference, additional maintenance information is available in the owner's manual on pages 624 through 644.

If you have any additional questions, please feel free to contact me.

Louis
GM Customer Service

Doug Roberts

What about 300k check list lol and its a 99

Chevrolet Customer Service

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Wow! Congrats on hitting the 300k mark! The same applies. You may also consider:

- Draining, flushing and refilling the cooling system.
- Inspect hoses.
- Clean Radiator, condenser, pressure cap and neck.
- Pressure test the cooling system and pressure cap.
- Change five-speed manual transmission fluid.

Those are in addition to the regular maintenance.

Louis
GM Customer Service