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Showing results for tags 'active fuel management'.
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Information on Vibration Analysis and Diagnostic 2014/2015 Chevrolet Silverado and GMC Sierra This seems to be a vibration campaign that has been around since January 2015. I have seen many complaints on different forums about this issue. I also have a vibration/harmonics issue that is not there all of the time but most. My issue seems to be centered around the V4 decel, and body mount configuration. This link is filled with a ton of information about various causes and repairs many of the 2014/2015 GM truck owners are experiencing. Some may be experiencing a combination of more than one issue at a time. Many more may not be experiencing any vibration at all. I do believe for those folks with the "Cadillac ride" its only a matter of time before they start experiencing vibration/harmonics issues. Its kinda nice to get this information out so that GM can streamline the repair process even further. If enough of these trucks show up for repair request for vibration they may even send out letters to further enhance quality control. http://oemdtc.com/6392/information-on-vibration-analysis-and-diagnostic-2014-2015-chevrolet-silverado-gmc-sierra/3 If link does not work copy and past in your browser.- 90 replies
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The press release says it best: "Instead of relying on fixed cylinder deactivation or switching between fixed patterns like current multi-cylinder engines, Tula’s DSF technology continuously makes dynamic firing decisions on an individual cylinder basis to deliver the required engine torque for all vehicle speeds and loads while avoiding vibration. Independent testing commissioned by Tula shows that the application of DSF technology can improve fuel efficiency in a multi-cylinder engine (4/6/8 cylinders) by as much as 15 percent when compared to a vehicle equipped with an engine that does not have cylinder deactivation." In short, GM has replicated the mechanical attributes of displacement on demand with a digital software solution. Will this technology see the light of day in the future? We sure hope so.
