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.

Service

41,500 km (25,000 mi)

83,000 km (50,000 mi)

125,000 km (75,000 mi)

166,000 km (100,000 mi)

207,500 km (125,000 mi)

240,000 km (150,000 mi)

Inspect fuel system for damage or leaks.

X

X

X

X

X

X

Inspect exhaust system for loose or damaged components.

X

X

X

X

X

X

Vehicles without a filter restriction indicator: Replace engine air cleaner filter. Refer to Air Cleaner Element Replacement . An Emission Control Service.

X

X

X

X

X

X

Change automatic transmission fluid and filter (severe service). Refer to footnote (h).

 

X

 

X

 

X

Change automatic transmission fluid and filter (normal service).

 

 

 

X

 

 

Four-wheel drive: Change transfer case fluid. Refer to footnote (g).

 

X

 

X

 

X

Inspect evaporative control system. An Emission Control Service. Refer to footnotes † and (k).

 

X

 

X

 

X

Replace spark plugs and inspect spark plug wires. An Emission Control Service.

 

 

 

X

 

 

Except 8.1L engine: Inspect Positive Crankcase Ventilation (PCV) valve. An Emission Control Service.

 

 

 

X

 

 

Engine Cooling system service (or every 5 years, whichever occurs first). An Emission Control Service.

 

 

 

 

 

X

Inspect engine accessory drive belt. An Emission Control Service.

 

 

 

 

 

X