The DD15 engine in your new Freightliner truck may not come right out and say Detroit Diesel on it, but it carries with it all the power you’ve come to expect from the brand name you trust.

And speaking of trust, at W.W. Williams, we’ve worked hard to win yours. Our Detroit Diesel experts provide reliable, bumper-to-bumper service, so you and your DD15 engine are back on the road as soon as possible. Our factory-trained and authorized service technicians know their way around DD15 and Series 60 engines, as well as Allison Transmissions and the Mercedes-built MBE 4000 and 900. And nobody else can offer you this exclusive WheelTime^® Promise:

• Initial diagnosis within two hours of arrival.
• We will complete the repair in the fastest time.
• We will meet the time estimate given.
• We will meet the cost estimate given.
• We will notify you within 30 minutes after last labor.
• We will do it right the first time.

So if you’ve got a DD15 under the hood, you’d better have W.W. Williams in your corner.

To schedule service work on your DD15 contact any of our engine service locations.