Normal Vehicle Use
The maintenance instructions contained in this Maintenance Schedule are based on the assumption that the vehicle will be used as designed:
| • | Carry passengers and cargo within the recommended limitations as indicated on the Tire Placard located on the edge of the driver's door. |
| • | Are driven on reasonable road surfaces within legal driving limits. |
| • | Driven off-road in the recommended manner. For information on the recommended driving manners, refer to the Owner's Manual. |
| • | On unleaded gasoline of the recommended type. For information on the proper type of fuel to use, refer to the Owner's Manual. |
Maintenance Schedule Intervals
The services shown in this schedule up to 166 000 km (100,000 mi) should be performed after 166 000 km (100,000 mi) at the same intervals. The services shown in this schedule to be performed at 240 000 km
(150,000 mi) should be performed after 240 000 km (150,000 mi) at the same intervals.
Pickup only: The services shown in this schedule to be performed at 240 000 km (150,000 mi) and 332 000 km (200,000 mi) should be performed after 240 000 km (150,000 mi) at the same intervals.
For explanations of the maintenance inspections and services included in this Maintenance Schedule, refer to
Explanation of Scheduled Services
.
For additional maintenance inspections and services which are not included in this Maintenance Schedule, refer to
Periodic Maintenance Inspection
.
Maintenance Schedule Engine Oil Change Intervals
This vehicle is equipped with a GM Oil Life System ™. The GM Oil Life System ™ will show when to change the engine oil and oil filter. This will usually occur between 5 000 km (3,000 mi) and 16 000 km
(10,000 mi) since the last oil change. Under severe conditions, the indicator may come on before 5 000 km (3,000 mi).
Never drive the vehicle more than 16 000 km (10,000 mi) or 12 months without an oil and oil filter change. The system will not detect dust in the oil. If the vehicle is driven in a dusty area, be sure to change the oil and oil
filter every 5 000 km (3,000 mi) or sooner if the CHANGE OIL SOON indicator comes on. Reset the Oil Life System when the oil and filter have been changed.
This vehicle is equipped with an engine oil life monitor. For description and resetting information, refer to
GM Oil Life System Resetting
in Maintenance and Lubrication.
This is an Emission Control Service.
Chassis Lubrication
Lubricate the chassis components with each engine oil and filter change. Lubricate the front suspension, ball joints, steering linkage. transmission shift linkage, transfer case shift linkage, parking brake cable guides, and brake front axle. Ball joints
should not be lubricated unless their temperature is -12°C (10°F) or higher, or they could be damaged.
Vehicles used under severe commercial operating conditions require lubrication on a regular basis, every 5,000 km (3,000 miles).
Footnotes
† The U.S. Environmental Protection Agency or the California Air Resources Board has determined that the failure to perform this maintenance item will not nullify the emission warranty or limit recall liability prior to the completion of
the vehicle's useful life. We, however, urge that all recommended maintenance services be performed at the indicated intervals and the maintenance be recorded.
+ A good time to check the brakes is during tire rotation. Refer to
Explanation of Scheduled Services
.
Scheduled Maintenance
12 500 km (7,500 mi)
| • | Inspect rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. |
| • | Allison Transmission Only: Replace the transmission external filter. |
25 000 km (15,000 mi)
| • | Inspect engine air cleaner filter if you are driving in dusty conditions. Replace filter if necessary. |
| | This is an Emission Control Service. † |
| • | Inspect rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking. |
37 500 km (22,500 mi)
| • | Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking. |
41 500 km (25,000 mi)
Allison Transmission 8.1 Liter Engine Only: Change automatic transmission fluid and transmission external filters if the vehicle is mainly driven under one or more of these conditions:
| • | In heavy city traffic where the outside temperature regularly reaches 32°C (90°F) or higher |
| • | In hilly or mountainous terrain |
| • | When doing frequent trailer towing |
| • | Uses such as found in taxi, police or delivery service |
If vehicle is not driven under any of these conditions, change the fluid and filter every 83 000 km (50,000 mi).
50 000 km (30,000 mi)
| • | Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking. |
| • | Replace the fuel filter. |
| | This is an Emission Control Service. † |
| • | Replace engine air cleaner filter. |
| | This is an Emission Control Service. † |
62 500 km (37,500 mi)
| • | Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking. |
75 000 km (45,000 mi)
| • | Inspect engine air cleaner filter if you are driving in dusty conditions. Replace filter if necessary. |
| | This is an Emission Control Service. † |
| • | Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking. |
83 000 km (50,000 mi)
| • | Change the automatic transmission fluid and filter if the vehicle's GVWR is over 8,600 lbs. or if the vehicle is mainly driven under one or more of these conditions: |
| - | In heavy city traffic where the outside temperature regularly reaches 32°C (90°F) or higher |
| - | In hilly or mountainous terrain |
| - | When doing frequent trailer towing |
| - | Uses such as found in taxi, police or delivery service |
| - | Except Allison Transmission: If vehicle is not used under any of these conditions, change the fluid and the transmission external filter at 166 000 km (100,000 mi). |
| • | Automatic Transfer Case Only: Change transfer case fluid. |
87 500 km (52,500 mi)
| • | Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking. |
100 000 km (60,000 mi)
| • | Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking. |
| • | Replace the fuel filter. |
| | This is an Emission Control Service. † |
| • | Replace the engine air cleaner filter. |
| | This is an Emission Control Service. † |
| • | Inspect the Evaporative Control System. Inspect all the fuel and vapor lines and the hoses for proper for proper hook-up, routing and condition. Ensure that the purge valve works properly, if equipped. Replace the components as needed. |
| | This is an Emission Control Service. † |
112 500 km (67,500 mi)
| • | Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking. |
125 000 km (75,000 mi )
| • | Inspect engine air cleaner filter if you are driving in dusty conditions. Replace filter if necessary. |
| | This is an Emission Control Service. † |
| • | Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking. |
| • | Allison Transmission: Change the automatic transmission fluid and transmission external filter if the vehicle is mainly driven under one or more of these conditions: |
| - | In heavy city traffic where the outside temperature regularly reaches 32°C (90°F) or higher |
| - | In hilly or mountainous terrain |
| - | When doing frequent trailer towing |
| - | If the vehicle is not driven under any of these conditions, change the fluid and filter every 83 000 km (50,000 mi). |
137 500 km (82,500 mi)
| • | Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking. |
150 000 km (90,000 mi)
| • | Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking. |
| • | Replace the fuel filter. |
| | This is an Emission Control Service. † |
| • | Replace engine air cleaner filter. |
| | This is an Emission Control Service. † |
162 500 km (97,500 mi)
| • | Inspect the rear/front axle fluid level. Add fluid as needed. Inspect the constant velocity joints and the axle seals for leaking. |
166 000 km (100,000 mi)
| • | Inspect the spark plug wires. |
| | This is an Emission Control Service. |
| • | Replace the spark plugs. |
| | This is an Emission Control Service. |
| • | Change the automatic transmission fluid and filter if the vehicle's GVWR is over 8,600 lbs. or if the vehicle is driven under one or more of these conditions: |
| - | In heavy city traffic where the outside temperature regularly reaches 32°C (90°F) or higher |
| - | In hilly or mountainous terrain |
| - | When doing frequent trailer towing |
| - | Uses such as found in taxi, police or delivery service |
| • | If vehicle has not been used under severe service conditions listed previously and, therefore, the automatic transmission fluid has not been changed, change both the fluid and filter. |
| • | Automatic Transfer Case Only: Change transfer case fluid. |
| • | Inspect the positive crankcase ventilation (PCV) valve. |
| | This is an Emission Control Service. |
| • | Except 8.1L V8 Engine: Inspect Positive Crankcase Ventilation (PCV) valve. |
| | This is an Emission Control Service. † |
240 000 km (150,000 mi)
| • | Drain, flush and refill the cooling system (or every 60 months since the last service, whichever comes first). |
| • | Clean the following components: |
| • | Pressure test the cooling system and the pressure cap. |
| | This is an Emission Control Service. |
| • | Change five-speed manual transmission fluid (4300 V6 or 4800 V8 engines only) |
| • | Inspect engine accessory drive belt. |
| | This is an Emission Control Service. † |
332 000 km (200,000 mi)
Change five-speed manual transmission fluid (6000 V8 engine only)
