Oh, I dunno.
Any discussion here on any topic related to the industry could bring forth some new thoughts and that can always help someone.
The selling in Service starts long before the vehicle ever arives on the drive. When the call comes in make sure advisors look a vehicle history or they querry the customer. Try going to get a cavity filled without first having to get a cleaning and a complete estimate!!!
Having a good Pre-RO where the advisor can remind the customer of any concerns they may have had a week ago when they made the appointment. Now work that with mentioning the parking lot ding spotted on the walk around and get an upsell for dent repair.
Back it up with a diagnostic/vehicle condition report. No, canned things. Make the comments custom to the car with REAL numbers... Alternator output, ACCURATE tread depth. Pad or shoe thickness, comments that hit home... "Passes State Inspection today, will need to be replaced before next inspection".
Always, take any opportunity to get the wheels off of the car. If you have to and you believe it offers advantage... Offer a discounted or even free rotation. If you can't sell a rotation to a customer who hasn't had their car serviced in six months you need to look at a match book cover and go to Truck Drive Scool. Goodyear stores don't make money selling tires. They make money by getting the wheels off and selling brakes and shocks etc...
Customers need to be reminded of proper maintenance intervals. When they know someone will look at their car (in person)instead of just looking at the RO they begin to take pride in having it known that they maintain their car, and they will.
I've always believed that any employee who sells un-needed work needs to see the door... Conversely, any employee who fails to upsell proper maintenance and repairs needs to see the light... or the light of the same above mentioned door.
One of the major drawbacks with DMS systems that didn't exist to such an extent when we hand-wrote ROs is... eye contact. How can you know your customer or your customer learn to know and trust you if you can't make eye contact with them. Get your ugly face out of the monitor and address the customer!!! The walk around can help do that.
However, advisor workload can impact and reduce the benefit of the walk-around if the advisor doesn't have the time to do it right. Stagger apppointments, don't ever let there be a line five deep at 7:45.
How many ROs is the advisor doing in any given day? Oh, and don't forget... Holdovers kill advisors.
As a flat rate tech I loved holdovers for parts. When the rest of the shop went home early for a lack of work I still had work. Yeah, I was the guy who held a car for an 8mm spring washer. The, the parts arrived. I could push a car back in and work the rest of the day. The same holdover killed the advisor with the hand holding they had to do for the customer. Oh, and BTW! As a Parts Manager, I always stocked 8mm spring washers

Just some random quick thoughts.
------------------
When in doubt,
charge it out !I'll be right back with it = Bill it to the Shop Ticket
(
Enter any name) will bring you the RO = Charge it to my Personal AR