Re: How to improve our service department?
Have a well spoken, polite, counter person to deal one on one with the customers.
No rolling of their eyes, or talking under their breathe
Share info with the customer, take time to explain things.
Don't EVER surprise the customer with $100 or $700 of add ons when they come to pick up their motor.
Stick to the estimate, so be accurate the first time.
If more cost will be incurred, contact the customer to get approval.
Be accurate and honest in your service times and schedules.
Treat your techs well, so they keep you on schedule.
Don't make excuses, don't blame "the techs". The customer doesn't want to hear it, and will doubt the integrity of the whole shop.
Fix little things like a leaky fuel hose, by trimming the hose and re-attaching for $15, rather than selling a new hose assembly for $73. Then let the customer know what you did to save them money. They will appreciate it, and reward you with repeat business.
I could write for hours. But perhaps it would be best to buy one of the many books on this subject.