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| Model | Engine | Horsepower | Torque (lb-ft) |
|---|---|---|---|
| GMC Sierra 2500 AT4 | 6.6L Duramax Turbo-Diesel V8 | 470 | 975 |
| GMC Sierra 2500 AT4 | 6.6L Gas V8 | 401 | 464 |
| Ford F-250 Tremor | 6.7L Power Stroke Turbo-Diesel V8 | 475 | 1050 |
| Ford F-250 Tremor | 7.3L Gas V8 | 430 | 475 |
Transmission Options
Both the GMC Sierra 2500 AT4 and Ford F-250 Tremor are equipped with advanced automatic transmissions designed to optimize towing performance and fuel efficiency. The transmission options available for each truck are as follows:
- GMC Sierra 2500 AT4:
- 10-Speed Automatic Transmission:The Sierra 2500 AT4 comes standard with a 10-speed automatic transmission that offers smooth shifting and quick acceleration. This transmission features adaptive shifting technology, which adjusts gear selection based on driving conditions, optimizing fuel efficiency and performance. It also includes a tow/haul mode that optimizes shifting patterns for towing heavy loads.
- Ford F-250 Tremor:
- 10-Speed Automatic Transmission:Similar to the Sierra 2500 AT4, the F-250 Tremor also comes standard with a 10-speed automatic transmission. This transmission features a wide gear ratio spread, allowing for optimal acceleration and fuel economy. It also includes tow/haul mode and adaptive shifting technology for improved towing performance.
Fuel Economy
Fuel economy is a crucial consideration for heavy-duty trucks, especially when used for towing. The fuel economy of each engine and transmission combination can vary depending on factors such as driving conditions and payload. However, here is a general comparison of the EPA-estimated fuel economy figures for each truck:
| Model | Engine | Transmission | City MPG | Highway MPG | Combined MPG |
|---|---|---|---|---|---|
| GMC Sierra 2500 AT4 | 6.6L Duramax Turbo-Diesel V8 | 10-Speed Automatic | 16 | 22 | 18 |
| GMC Sierra 2500 AT4 | 6.6L Gas V8 | 10-Speed Automatic | 13 | 18 | 15 |
| Ford F-250 Tremor | 6.7L Power Stroke Turbo-Diesel V8 | 10-Speed Automatic | 17 | 21 | 19 |
| Ford F-250 Tremor | 7.3L Gas V8 | 10-Speed Automatic | 14 | 18 | 16 |
Emissions
Both the GMC Sierra 2500 AT4 and Ford F-250 Tremor meet current emissions standards, employing advanced technologies to reduce harmful emissions. The diesel engines in both trucks utilize selective catalytic reduction (SCR) systems, which inject a urea solution into the exhaust stream to reduce NOx emissions.
Both truck models also feature exhaust gas recirculation (EGR) systems to further reduce emissions.
Maintenance
The maintenance requirements for each engine can vary, with diesel engines generally requiring more frequent oil changes and filter replacements compared to gasoline engines. Both truck manufacturers recommend consulting the owner’s manual for specific maintenance schedules and intervals. It is important to follow the recommended maintenance schedule to ensure optimal engine performance and longevity.
