GM Service Intervals
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Simplified Maintenance I and II
2007-2010 GM Cars and Trucks |
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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 alst service performed.
The first service should be Maintenance I; the sencon 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.
| 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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-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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-Perform any needed additional services. |
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-Trucks: Lubricate front suspension, ball joints, steering leakage, 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. |
| 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. |
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-Trucks/Vans: Check air intake. |
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-Perform 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 Required Services
In addition to Maintenance I and II, the following services are recommended at the mileage indicated. |
| 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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-Trucks with 6-speed manual transmission only: Change clutch plate fluid. |
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-Trucks with Allison Transmission only: Change automatic transmission fluid and filter (severe service). |
| At 50,000 Miles |
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-Inspect fuel system for damage or leaks. |
| 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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-Trucks: Replace fuel filter. |
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-Trucks without a filter restriction indicator: Replace engine air cleaner filter. |
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-Trucks with 6-speed manual transmission only: Change clutch plate fluid (at least every 24 months). |
| -Trucks with Allison Transmission only: Change automatic transmission fluid and filter (severe service). |
| 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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-Change automatic transmission/transaxle fluid and filter (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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-Trucks: Inspect evaporative control system lines, hoses, and valves. |
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-Trucks: Replace fuel filter. |
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-Trucks without a filter restriction indicator: Replace engine air cleaner filter. |
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-Trucks: with a 5-speed manual transmission only: Change manual transmission fluid. |
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-Trucks with a 6-speed manual transmission only: Change clutch plate fluid (at least every 24 months). |
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-Trucks with Allison Transmission only: Change 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. |
