One problem related to engine noise has been reported for the 2004 GMC Sierra 2500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 GMC Sierra 2500 based on all problems reported for the 2004 Sierra 2500.
While driving over 50mph on the highway I get a violent shaking in the engine and the steering wheel shakes bake and forth. The engine sound very loud while its doing this. It only occurs when I am at highway speeds.