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The horsepower of a GMC Sierra is 355 hp.
295hp
270hp
Your 2000 GMC Sierra Vortec might be hard to start because the battery or the starter are worn or dead. The GMC Sierra might also be hard to start because of a clogged fuel filter.
5 quarts of 5w-30
It has 255 horsepower bone stock
285 horsepower
somewhere around 200hp
310 hp
315 horsepower stock
403
250 hp