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What kind of engine is in a 2007 GMC Sierra?

The 2007 GMC Sierra came with a variety of engines, depending on the trim level and configuration. The most common options included:

* 4.3L Vortec 4300 V6: A relatively small and fuel-efficient V6 engine.

* 4.8L Vortec 4800 V8: A common V8 offering a good balance of power and fuel economy.

* 5.3L Vortec 5300 V8: A more powerful V8, often found in higher trim levels.

* 6.0L Vortec 6000 V8: A large displacement V8 offering significant power, typically in heavier-duty models or those with towing packages.

To know the *specific* engine in a particular 2007 GMC Sierra, you'd need to check the vehicle's identification number (VIN) or the documentation that came with the truck.