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What is the horsepower of a 1998 GMC Sierra?

The horsepower of a 1998 GMC Sierra varied greatly depending on the engine option. There wasn't a single horsepower rating. To know the horsepower, you need to know the specific engine installed in the truck. Common engine options included:

* 4.3L V6: Around 190-200 hp

* 5.0L V8: Around 230 hp

* 5.7L V8: Around 255 hp

* 7.4L V8: Around 290 hp

Therefore, you need to check the vehicle's documentation (like the owner's manual or the vehicle identification number (VIN) sticker) to determine the exact engine and its horsepower rating.