Meet Our TechNICIANS

Specially trained, professional, expert technicians to get your job done fast!

We’ve got the best in the business

Our specially-trained technicians are trusted experts with decades of experience. They are ICAR-trained in ADAS calibration as well as mechanical work so you can get all your sublet repair work completed in one visit. 

Tom McGuire

Tom McGuide Precision Diagnostics
C.O.O. / Co-Founder
Tom has lived in the Collision Repair Industry for over 35 years. Tom’s career has led him from a production technician through numerous levels of leadership in the industry.  A former owner of an independent collision shop in Northern Illinois as well as having served in various local and regional leadership positions in the MSO segment, Tom is extremely driven to solve the common issues that adversely impact the collision operator’s world.

As a co-founder of Precision Diagnostics, Tom’s passion is “making sublet easy”. Offering the range of services with proactive understanding of the collision operator needs is Tom’s favorite aspect of what the PD operation does.

When Tom isn’t working, he simply enjoys family time.

Dave Zielke

Dave Zeilke Precision Diagnostics
C.E.O. / Co-Founder
Dave has been an entrepreneur over the past 12 years playing a part in 3 start-ups. In 2009, Dave co-founded a company called Imperial Blades in Madison, WI. After 9 years of rapid market share growth, the company sold to Milwaukee Tool.

Passionate about disrupting the automotive collision industry, Precision offers the first full-service calibration center.

Dave enjoys spending time with his wife and three kids when not working.

Henry Allbright

Henry Allbright Precision Diagnostics Technician
Mechanical Technician
Henry has been involved in the automotive industry as a mechanic and a previous owner/operator for over 46 years. He carries a high-level knowledge of mechanical systems and common automotive troubleshooting in his background.

Bringing several ASE designations and a Toyota Master Level certification to the base of shared knowledge at PD, Henry is a natural fit to the team.

When Henry is not at work fixing mechanical issues, he can be found enjoying his hobby which is also working on cars.

Dean Christensen

Dean Christensen Precision Diagnostics Technicians
General manager - Milwaukee
Dean has been immersed in the Automotive Industry for an impressive 51 years and brings tremendous wealth of experience and practical input to the PD Team. Having spent a large portion of his career running collision centers, Dean is keenly aware of the pressures faced by the repair operator.

Dean enjoys summers putting miles on his Harley and golfing.

Cody Jacoby

Cody Jacoby Precision Diagnostics Technician
Recovery Driver
Cody has been driving recovery vehicles for the past 4 years. His experience and understanding of the Precision mission to provide world class service are evident in the care he takes transporting vehicles for our collision partners.
Cody enjoys family time, working out, going to the races, and being outdoors.

Hector Martinez

Hector Martinez Precision Diagnostics Technician
Mechanical/ADAS Technician
While more recent to the industry, Hector has quickly adapted to both mechanical and ADAS related systems. Hector is certified in AC systems and continues to develop his I-CAR background. Hector enjoys being able to be part of a quickly changing industry that provides so many new challenges and opportunities to grow.

Detailing his Jeep and gaming are among Hector’s favorite things to do outside of work.

Schawn McConochie

Schawn McConochie Precision Diagnostics Technician
Diagnostic/ADAS Technician
Shawn brings to the PD team over 17 years of industry related mechanical and diagnostic experience. His Toyota/Lexus expertise coupled with his adaptability into other platforms make Shawn an ideal PD Team member. Providing strong programming and analysis skills, Shawn fluently solves issues and confidently gets vehicles back on the road to OE specification.

Shawn brings to the PD wall of education a wealth of I-CAR, ASE, and Toyota OE certified education. Shawn finds the rapid acceleration of the industry and the challenges that it presents to be a continual source of interest.

When Shawn is not solving problems on the automotive front, he can be found with his family hunting, camping, or enjoying sports.

Zach McInnis

Zach McInnis Precision Diagnostics Technician
Diagnostic/ADAS Technician

Zach has been performing mobile diagnostic work and programming for 2+ years and holds multiple I-CAR training certificates focusing on all aspects to ADAS.

Zach is passionate about his work. He enjoys working on all Japanese brands and especially Toyota.

When not, calibrating cars Zach loves to work out and being outdoors.

Willi Pranata

Willi Pranta Precision Diagnostics Technician
Diagnostic/ADAS Technician
Willi has been in the technical programming and support field for over 6 years. He stands out as the Precision “programming wizard” and provides a layer of internal IT support as needed. Willi possesses a wealth of understanding on complex Euro systems communication networks.
Willi received his bachelor’s degree while in Indonesia. Additionally, he is I-CAR certified in numerous areas.
Willi enjoys traveling and reading when not solving automotive problems.

Ben Shimel

Ben Schimel Precision Diagnostics Technician
Diagnostic/ADAS Technician
Ben has been performing mobile diagnostic work and programming for 3+ years. He brings a strong diagnostic and electrical systems mindset to the field. Ben holds I-CAR training certificates as well as AC 609 qualifications. His technical grasp and ability to isolate challenging issues are well respected.

Ben enjoys working on Ford systems and is capable on all other makes. ADAS calibration and related services are among Ben’s favorite services we offer.

Ben spends his spare time shooting and waterfowl hunting.

Alex Schwarzenbacher

Alex Schwarzenbacher Precision Diagnostics Technician
Recovery Driver
Alex can be found in one of our recovery trucks transporting customer vehicles for services. Alex shows tremendous pride in promptly getting vehicles back on the road as part of the PD recovery team.

When not in a PD recovery truck, Alex can be found hunting and fishing.

Theresa Steindorf

Theresa Steindorf Precision Diagnostic Technician
Office Manager
Theresa has provided support related services and administrative expertise for 19 years. Having a former claims related background brings a well-rounded understanding to the PD administrative operation. Theresa is well versed in automotive related fields and brings a wealth of customer facing knowledge to the team.

Theresa is a fan of classic cars and finds the multiple services that we offer to provide one stop sublet to the collision world, her favorite part of what we do.

Theresa enjoys 4-wheeling with her grandson and volleyball among other things when not at work.

Precision Diagnostics is very customer centric in all of their interactions. They will pick up and deliver to help in getting the vehicle back as soon as possible. Quality standards are top-notch which helps ensure the peace of mind that all of the safety features are operating as designed with the documentation to verify it.

– Darwin Godejohn, Caliber Collision Centers