Service and Maintenance 331. Engine air cleaner filterreplacement or every 20 000 km/12,500 Miles. If driving in dustyconditions, inspect the filter ateach oil change or more often asneeded. See Engine Air Cleaner/Filter 0 263.Every 40 000 km/25,000 Miles. Passenger compartment air filterreplacement (or every24 months, whichever occursfirst). More frequent replacementmay be needed if the vehicle isdriven in areas with heavy traffic,poor air quality, areas with highdust levels or are sensitive toenvironmental allergens. CabinAir Filter replacement may alsobe needed if you notice reducedairflow, windows fogging up,or odors. Your local GM Servicelocation can help you determinewhen it is the right time toreplace your filter.Every 72 000 km/45,000 Miles. Replace brake fluid (or everythree years, whichever occursfirst).. Rear axle fluid (If equipped withlimited slip).Every 80 000 km/50,000 Miles. Evaporative control systeminspection. Check all fuel andvapor lines and hoses for properhook-up, routing, and condition.Every 96 000 km/60,000 Miles. Replace spark plugs. Inspectspark plug wires. (2.0L LTG and3.6L LF3 Turbo Engines)Every 156 000 km/97,500 Miles. Replace spark plugs. Inspectspark plug wires. (3.6L LGX and6.2L LT4 Engines)Every 240 000 km/150,000 Miles. Engine cooling system drain andrefill (or every five years,whichever occurs first). SeeCooling System 0 264. AnEmission Control Service.. Engine drive belts inspection forfraying, excessive cracks,or obvious damage (or every10 years, whichever occursfirst). Replace, if needed.Severe Conditions RequiringMore Frequent Maintenance*. Public service, military,or commercial use vehicles toinclude the following:‐ Ambulances, police cars andemergency rescue vehicles.‐ Civilian vehicles such as lightduty pick-up trucks, SUVs andpassenger cars that are usedin military applications.‐ Recovery vehicles such astow trucks and flatbed singlevehicle carriers or any vehiclethat is consistently used intowing trailers or other loads.‐ High use commercial vehiclessuch as courier deliveryvehicles, private security patrolvehicles or any vehicles thatoperate on a 24 hour basis.‐ Any vehicle consistentlyoperated in a high sand ordust environment such asthose used on oil pipelinesand similar applications.
