Approximate Fluid Capacities
See Fluid and Lubricant Recommendations (USA and Canada) for more information. All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual. Recheck fluid level after filling.
| Application | Specifications | |
|---|---|---|
| Metric | English | |
| Axle Capacities | ||
| Front Axle 1000 Series (8.25") | 1.43 liters | 1.51 quarts |
| Front Axle 2000 Series (9.25") | 1.73 liters | 1.83 quarts |
| Rear Axle 1000 Series without RPO AXN (8.6") | 2.03 liters | 2.15 quarts |
| Rear Axle 1000 Series with RPO AXN (9.5" LD) | 2.6 liters | 2.75 quarts |
| Rear Axle 2000 Series (9.5" HD) | 2.6 liters | 2.75 quarts |
| Rear Axle 2000 Series with RPO LY6 (10.5" ) | 2.6 liters | 2.75 quarts |
| Rear Axle 2000 Series with RPO LMM (11.5") | 3.0 liters | 3.17 quarts |
| Rear Axle 3000 Series (11.5") | 3.0 liters | 3.17 quarts |
| Cooling System | ||
| 4.3L V6 | 15.6 liters | 16.5 quarts |
| 4.8L V8 | 16.0 liters | 16.9 quarts |
| 5.3L V8 | 16.0 liters | 16.9 quarts |
| 6.0L V8 - 1500 Series (except 2 Mode Hybrid) | 15.9 liters | 16.8 quarts |
| 6.0L V8 - 2500, 3500 Series (except 2 Mode Hybrid) | 16.4 liters | 15.5 quarts |
| 6.0L V8 - 2 Mode Hybrid | 13.7 liters | 14.4 quarts |
| 6.2L | 16.7 liters | 17.6 quarts |
| 6.6L Diesel | 23.4 liters | 24.7 quarts |
| 2 Mode Hybrid Drive Motor Generator Control Module | 2.7 liters | 2.9 quarts |
| Engine Oil with Filter | ||
| 4.3L V6 | 4.3 liters | 4.5 quarts |
| 4.8L V8, 5.3L V8, and 6.0L V8 | 5.7 liters | 6.0 quarts |
| 6.6L V8 Turbo Diesel, RPO LMM | 9.5 liters | 10.0 quarts |
| Fuel Tank | ||
| 1500 Series Standard and Short Box | 98.0 liters | 26.0 gallons |
| 1500 Series Long Box | 128.7 liters | 34.0 gallons |
| 2500 Series Standard Box | 98.0 liters | 26.0 gallons |
| 2500 and 3500 Series Long Box | 128.7 liters | 34.0 gallons |
| 3500 Series Chassis Cab | 189.0 liters | 50.0 gallons |
| 3500 Series Chassis Cab - Front Tank | 102.0 liters | 27.0 gallons |
| 3500 Series Chassis Cab - Rear Tank | 87.0 liters | 23.0 gallons |
| Automatic Transmission Fluid - 4L60-E/4L65-E/4L70-E | ||
| Pan Removal | 4.7 liters | 5 quarts |
| Overhaul | 10.6 liters | 11 quarts |
| 300 mm Torque Converter Approximate Fluid Capacity Dry Fill | 11.50 liters | 12.1 quarts |
| Automatic Transmission Fluid - 6L80-E/6L90-E | ||
| Pan Removal - Approximate Capacity 6L80 | 5.7 liters | 6.0 quarts |
| Overhaul - Approximate Capacity 6L80 | 9.9 liters | 10.5 quarts |
| Complete Trans System Fluid Capacity 6L80 | 11.7 liters | 12.4 quarts |
| Pan Removal - Approximate Capacity 6L90 | 6.0 liters | 6.3 quarts |
| Overhaul - Approximate Capacity 6L90 | 9.9 liters | 10.5 quarts |
| Complete Trans System Fluid Capacity 6L90 | 11.7 liters | 12.4 quarts |
| Automatic Transmission Fluid - Allison | ||
| Initial Fill | 12 liters | 12.7 quarts |
| Refill | 7 liters | 7.4 quarts |
| Automatic Transmission Fluid - 2ML70 | ||
| Drain Plug Only - Approximate Capacity | 9.93 liters | 10.5 quarts |
| Drop Pan and Filter - Approximate Capacity | 10.88 liters | 11.5 quarts |
| Dry Transmission (Empty) - Approximate Capacity | 12.30 liters | 13 quarts |
| Manual Transmission | ||
| Tremec 5 Speed M96 | 3.5 liters | 3.7 quarts |
| Tremec 5 Speed TZ0 | 4.4 liters | 4.6 quarts |
| Transfer Case Fluid | 1.5 liters | 1.6 quarts |
Fluid and Lubricant Recommendations (USA and Canada)
The Recommended Fluids and Lubricants information will be found in the Owner's Manual. Refer to the Maintenance Schedule subsection of the Owner's Manual.
You may be able to use the Search information function using the words Fluids or Lubricants.
Most transmission, transfer case, front and rear axle lubricant recommendations will be found in those service categories (subsections).
Maintenance Items
The Normal Maintenance Replacement Parts information will only be found in the Owner's Manual. Refer to the Maintenance Schedule subsection of the Owner's Manual.
You may be able to use the Search information function using the words Replacement Parts.
Maintenance Schedule (North American Emissions)
The Maintenance Schedule information will only be found in the Owner's Manual.
Refer to the Maintenance Schedule subsection of the Owner's Manual, or you may be able to use the Search information function using the words Scheduled Maintenance.
GM Oil Life System Resetting
When the system has calculated that oil life has been diminished, it will indicate that an oil change is necessary. A CHANGE ENGINE OIL SOON message will come on. Change the engine oil as soon as possible within the next 1 000 km (600 miles). It is possible that, if driving under the best conditions, the oil life system may not indicate that an oil change is necessary for over a year. However, the engine oil and filter must be changed at least once a year and at this time the system must be reset.
If the system is ever reset accidentally, change the engine oil at 5 000 km (3,000 miles) since last oil change.
How to Reset the Engine Oil Life System
The Engine Oil Life System calculates when to change the engine oil and filter based on vehicle use. Anytime the oil is changed, reset the system so it can calculate when the next oil change is required. If a situation occurs where the oil is changed prior to a CHANGE ENGINE OIL SOON message being turned on, reset the system.
If the vehicle does not have a Driver Information Center (DIC), do the following
- Turn the ignition to ON, with the engine OFF.
- Fully press and release the accelerator pedal slowly three times within five seconds.
- Turn the key to OFF. If the CHANGE ENGINE OIL SOON message comes back on when you start the vehicle, the engine oil life system has not reset. Repeat the procedure.
If the vehicle has a DIC, do the following
- Turn the ignition to ON, with the engine OFF.
- Press the MODE button until the DIC reads OIL LIFE LEFT/HOLD SET TO RESET.
- Press and hold the SET button until 100 percent is displayed. You will hear three chimes and the CHANGE ENGINE OIL SOON message will go off.
- Turn the key to OFF.
If the CHANGE ENGINE OIL SOON message comes back on when you start the vehicle, the engine oil life system has not reset. Repeat the procedure.