If your 2014 Sierra/Silverado has a vibration/shake, has a dealer used an EVA, Electronic Vibration Analyzer on your truck?
If so, what was the reading?
Did they give you any numbers and/or explain them to you?
Were you present during the analysis? If so, where did they mount or put the analyzer? How long did it take?
Did the analysis help or hurt your case about the shake/vibe?
Thanks for any info.