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Simplified Maintenance I and II
2007-2009 GM Cars and Trucks
with Gasoline Engines and with GM Oil Life System (OLS)
Required services for most vehicles are described by the terms Maintenance I and Maintenance II. Use Maintenance I if the CHANGE ENGINE OIL light comes on within 10 months of the vehicle purchase or when Maintenance II was the last service performed.
The first service should be Maintenance I; the second should be Maintenance II. Alternate between the two schedules thereafter. Depending upon your driving habits, Maintenance II may be required more often.
Refer to your Owner’s Manual for specific maintenance requirements.
NOTICE: It is important to check your engine oil regularly and keep it at the proper level.
Failure to maintain proper oil level can result in expensive engine repairs not covered by the vehicle warranty.
It is important to regularly check your tires for wear and proper inflation.
Failure to maintain properly inflated tires can result in premature tire wear, vehicle damage, or personal injury.
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MAINTENANCE I SCHEDULE
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• Change engine oil and filter. Reset oil life system. (See “Engine Oil.” An Emission Control Service.)
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• Visually check for any leaks or damage.
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• Inspect tires for wear and inflate to factory specs
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• Inspect brake system, including brake lines, hoses, pads, calipers, wheel cylinders, rotors, and drums.
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• Check engine coolant and windshield washer fluid and inspect air filter
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• Inform of any needed additional services.
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• Trucks: Lubricate front suspension, ball joints, steering linkage, and parking brake cable.
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• Trucks with Allison Transmission only: Inspect external control-main filter; replace if necessary.
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Additional recommended services and costs, resulting from inspections performed, will be brought to your attention.
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MAINTENANCE II SCHEDULE
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• Change engine oil and filter. Reset oil life system. (See “Engine Oil.” An Emission Control Service.)
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• Visually check for any leaks or damage.
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• Inspect engine air cleaner filter; replace if necessary.
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• Rotate and inspect tires. Check inflation pressures and wear.
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• Inspect brake system, including brake lines, hoses, pads, calipers, wheel cylinders, rotors, and drums.
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• Check engine coolant and windshield washer fluid.
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• Inspect engine cooling system.
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• Lubricate body components.
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• Inspect wiper blades for wear or cracking.
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• Inspect restraint system components.
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• Inspect suspension and steering components.
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• Check transmission/transaxle fluid level and add fluid as needed.
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• Trucks without a filter restriction indicator: Inspect engine air cleaner filter.
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• Trucks/Vans: Fuel filter service; replace as necessary. (DIESEL ONLY)
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• Trucks/Vans: Check air intake.
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• Inform of any needed additional services.
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Additional recommended services and costs, resulting from inspections performed, will be brought to your attention.
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Additional Recommended Services
In addition to Maintenance I and II, the following services are recommended at the mileage indicated.
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AT 25,000 MILES
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• Inspect fuel system for damage or leaks.
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• Inspect exhaust system for loose or damaged components.
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• Replace fuel filter cars only
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• Allison Transmission only: Change automatic transmission filter (required service).
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AT 50,000 MILES
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• 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.
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• Flush automatic transmission/transaxle fluid (severe service).
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• Fuel service: Clean air intake, clean throttle body, fuel additive
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• Replace fuel filter cars only
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• Clean evaporative control system lines, hoses, and valves.
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Trucks with Allison Transmission only: Flush automatic transmission fluid and replace filter.
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• Trucks rear differential service
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• Trucks with four-wheel drive and automatic transfer case only: Change transfer case fluid and check vent hose at transfer case.
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AT 75,000 MILES
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• Inspect fuel system for damage or leaks.
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• Inspect exhaust system for loose or damaged components.
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: Replace fuel filter cars only
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• Replace engine air cleaner filter.
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• Trucks with Allison Transmission only: Change automatic transmission filter (severe service only).
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AT 100,000 MILES
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• 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.
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• Flush automatic transmission/transaxle fluid (severe service).
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• Replace spark plugs 6 cyl.
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• Inspect spark plug wires. (An Emission Control Service.)
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• Fuel service: Clean air intake, clean throttle body, fuel additive
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• Clean evaporative control system lines, hoses, and valves.
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• Trucks: Replace spark plugs. (An Emission Control Service.)
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• Replace fuel filter cars only
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• Trucks with Allison Transmission only: Flush automatic transmission fluid and filter (normal and severe service).
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• Trucks with four-wheel drive and automatic transfer case only: Change transfer case fluid and check vent hose at transfer case.
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AT 125,000 MILES
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• Inspect fuel system for damage or leaks.
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• Inspect exhaust system for loose or damaged components.
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• Replace fuel filter cars only
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• Replace air filter
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• Trucks with Allison Transmission only: Change automatic transmission filter (severe service).
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AT 150,000 MILES
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• 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.
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• Flush automatic transmission/transaxle fluid (severe service).
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• Engine cooling system service (or every 5 years, whichever occurs first).
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• Inspect engine accessory drive belt.
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• Clean evaporative control system lines, hoses, and valves.
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• Replace fuel filter cars only
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• Fuel service: Clean air intake, clean throttle body, fuel additive
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• Trucks with Allison Transmission only: Flush automatic transmission fluid and filter (normal and severe service).
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• Trucks with four-wheel drive and automatic transfer case only: Change transfer case fluid and check vent hose at transfer case for kinks and proper installation.
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Change engine oil and filter
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Replace fuel filter
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Recharge battery and load-test charging system
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Replace windshield wiper blade inserts (front, two)
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Electronic wheel balance (includes tire rotation)
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Align front suspension
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Align front and rear suspension
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Air conditioner inspection and performance test
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Adjust headlamp alignment and aim
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Engine cooling system service
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Automatic transmission flush
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Fuel Service: Clean air intake, throttle body, fuel additive
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Replace front brake pads
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Replace rear brake shoes
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Emission inspection
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Brake system inspection
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Replace engine air cleaner filter
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Belts and hoses inspection
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