When I was responsible for bringing technology training to the 14 service dept. managers/directors in my auto group, I found them for the most part to be extremely open. I always presented new marketing tools and technologies, backed up by very clear stats and data as well as the best practices required to use them successfully. They loved it and were very receptive.
But, over the years, when I would visit them at the dealership, auditing their progress, I found there was a big disconnect between my training and talking with them at the corporate office, and what they experienced on a day-to-day basis, back at the dealership. The square peg of insight and training I was giving them at corporate, no matter how much more efficient and effective it might have been, just did not fit into the round hole environment at the dealership.
The average service manager has too much going on daily (at least my guys did), so that without the support of the leadership for an environmental/cultural change there is simply not enough energy and drive to push the change through on their own.
While that is not an excuse to stop pushing for change, it is an indicator that the change will come very slowly, if at all. I see very little difference between 2006 when I entered the automotive space and today, ten years later, where so many new technologies have appeared on the stage. So I would have to agree with Latoya - without the acceptance and the implementation of relevant sales and communication technologies, dealership-based service departments are going to continue to lose market share to independent automotive service providers in their community.
To the last point, "making sales where THEY are", I would totally concur. Here is an interesting article we picked up, showing some stats about where one particular crowd can be found and how to market to them:
http://wardsauto.com/digital-marketing/where-car-dealers-can-meet-millennials