After Hours Emergency Service Available

Call our Toll-Free Line: 1-800-906-4235


715 South Outer Drive
Saginaw, MI 48601
Get Directions

About our Location:

A member of the WheelTime Network, we pride ourselves on delivering exceptional customer service and professional work. Our mechanics are committed to getting the job done right and getting your car or truck back on the road, as quickly and safely as possible.


715 South Outer Drive
Saginaw, MI 48601
Get Directions


Monday - Friday
7:00 AM - 5:30 PM
Saturday & Sunday


On-Site Amenities

  • Driver's Lounge
  • HD Televisions
  • Free Coffee
  • Free Wi-Fi

Payment Forms Accepted

  • Mastercard
  • Visa
  • American Express
  • Money Orders

Get To Know Us:

We are located off Interstate 175 at Exit 149B. Turn right at the light and you will find us approximately one half of a mile down the road on the left. Our mechanics, friendly service advisors and staff are ready to address your vehicle and equipment needs in any of our 14 working bays. Ask about our express parts delivery for all makes and models, and our expertise in manual drive train and axle, brakes, steering and suspension. Your comfort matters to us – relax in our drivers lounge with free coffee and WiFi access. Consider it Done!


We proudly represent top industry manufacturers and brands, including:


W.W. Williams is the only facility in our area that can handle the work on the Allison Transmission. They know what they are doing. 


I have used W.W. Williams services serveral times. I always feel like that are taking care of me and not taking advantage of me. They do a very good job.  


I like W.W. Williams for their convenience, honesty, and efficiency.  

Logistics Coordinator WOLENSKI ENT

I have always had good experiences with W.W. Williams. They are a top-notch service facility. 


W.W. Williams does excellent work and are the go-to people for Detroit Diesel.  

Logistics Coordinator STEPHEN MILLER

The service at W.W. Williams is good and they service Allison Transmissions. 

Transportation Service

W.W. Williams made the process easy and the correct parts came to me. 

Auto Repair Shop

W.W. Williams was very professional and responded right away. They were accurate with arriving and getting me taken care of. 


W.W. Williams was nice to me on the phone, they were pleasant, and tried to get me in as quickly as possible while I was in town. 

Excavating Contractor

I have a lot of friends who have used W.W. Williams and they have all been very happy with the service and the way they were treated. I am happy with the way they treated me, too. They do good work and they are a straight up company. 


W.W. Williams always follows up with me regarding the parts that were purchased. 

Local Marina

W.W. Williams is customer oriented and follow up with you to make sure you are happy with everything. 

Chemical Shipping Company

We have used W.W. Williams for about four or five years. Their prices have been very good and the quality of service is great. 

Water Utility Company

I would recommend W.W. Williams because they did a good job. This was a year-long service due to the vessel being struck by lightning. 

Marina and Campground

W.W. Williams is available whenever I try to get ahold of them. Every time they come out, they are incredibly knowledgeable and helpful. 

Local CSA Farm

Truck & Vehicle Repair & Service

We understand the priorities of today's drivers: uncompromised safety, maximum uptime, and honest service. Whether you drive a long-haul truck or a school bus, we've got what it takes to get you back on the road. Ask about our DPF cleaning services for all makes and models. At our Saginaw location, we offer the following services for trucks, trailers, commercial vehicles & equipment:

  • Diesel Engine & Transmission Service & Repair
  • Bumper to Bumper Service & Repair
  • Cab Climate Control Parts & Service
  • Preventative Maintenance
  • Courtesy Vehicle Inspection
  • Onsite Diesel Particulate Filter Cleaning

Power Generator Service & Sales

W.W. Williams Saginaw is better than your average service center. We excel in service and sales assistance for exceptional power generation products from MTU Onsite Energy. Does your on-site generator need service or repair? Are you looking to upgrade your continuous power solution? Consider it done. Contact us today to talk over your individual needs.

  • Backup Generator Service & Repair
  • Backup Generator Sales
  • Continuous Power Generator Service & Repair
  • Continuous Power Generator Sales


W.W. Williams is widely known for the advance skills of our diesel mechanics. We are partners with Detroit Deisel, MTU, Isuzu, and Yanmar - offering sales, parts, and service support. Our locations service all makes and models - if it's a diesel engine, our mechanics can fix it. Class 8 trucks, medium duty trucks, vans, buses and RVs, even heavy construction equipment and marine engines - if you need diesel engine repair or service, consider it done.

  • Maintenance
  • Diagnostics
  • Repair
  • Engine Rebuilds
  • Engine Sales
  • Replacement Parts


From work boats and tug boats to pleasure crafts and yachts, W. W. Williams Saginaw is fully equipped to handle all of you marine engine needs.

  • General Maintenance
  • Tune-Ups & Troubleshooting
  • Overhauls
  • Electronic Controls
  • Vessel Repowers
  • Service & Repair for All Makes & Models

Fire Support & Emergency Apparatus

We help emergency responders minimize vehicle and equipment downtime, control costs and get the to next alarm safely. Our EVT certified technicians stand ready to perform fire pump service and mobile fire pump testing. Whether you need a replacement part, engine repair, or 10,000 feet of hose—Consider it Done.

  • Bumper to Bumper Apparatus Service & Repair
  • Engine Service & Repair
  • Transmission Service & Repair
  • Emergency Equipment Service & Repair

Fleet Management Services

From a single truck or trailer to a fleet of thousands, W.W. Williams Saginaw knows how to manage your fleet. Our turnkey solutions will improve fleet uptime, reduce risk, and help you control and manage costs.

  • Bumper to Bumper Service & Repair
  • Customized Fleet Maintenance Schedules
  • Fast Response Field Service Trucks
  • All-Makes Parts Inventory
  • Real-Time Repair Tracking Dashboard
  • National Service Network
WheelTime Promise

Get It Done Right, The First Time.

W.W. Williams is a member of the WheelTime Service Network, a network of service locations across the US and Canada dedicated to getting you back on the road in the shortest possible time.

The Wheeltime Promise
  • Initial assessment within two hours of arrival
  • Completed repairs in the fastest time possible
  • We will meet the cost estimate given
  • We will meet the time estimate given
  • We will notify you within 30 minutes after last labor
  • We will do it right, the first time