Very helpful, great front desk ladies! - Lindsey B. (5 star review on Facebook)

Love this place! The people who work there are great, ready to answer all of your questions and if they don’t know the answer right away they will find it! Very friendly staff in the office and in the shop! - Cori B.(5 star review on Facebook)

Dad takes both of his trucks here.  - Millie C. (4 star review on Facebook)

Have talked us through some minor repairs, along with supplier of quality parts. Have done some top notch work on the major stuff and stood behind it. - Dale B. (5 star review)

I would HIGHLY recommend this shop to anybody driving a diesel pickup that needs reliable and honest work done to their truck/engine!!! Gary is about one of the nicest and honest guys I ever met. His wife works the front desk and couldn't have been more accommodating and friendly to the customers. she even gave me a bunch of water bottles for the road trip back home. since I've been home I've had to replace the head gasket and Gary has been in constant contact with me on the phone answering all my questions about the tear down and rebuild.....even on the weekends. I live a 1000 miles away and he is still helping me, a one time customer, at no cost. Gary, his wife, and team run a legitimate honest diesel repair shop with an impressive military discount as well. If you find yourself within a 3 hour drive from his shop and are in need of maintenance, I highly recommend driving there. Thanks again Gary! - Michael H. (5 star review on Google)

Gary and his guys are the real deal. Honest as they come and just as skilled. If I'm ever in a bind, I know I could count on Diesel Specialists. - Aaron L. (5 star review on Google)

They are absolute experts! - Mark T. (5 star review on Google)

Great people, friendly staff, try to save you money if they can. If they were closer to my home location, they would be the only place I would get my repairs done. - Deborah P. (5 star review)

They are great; they make everyone feel like family. - Ray C. (5 star review)

Gary and staff are the BEST! - Emily M. (5 star review on Google)

They are "The Best", I had three so called shops and one dealership look into my 1999 Dodge Dually Cummins to try and find why I was having a lack of power and suddenly worse mileage with no luck. I went to Diesel Pickup Specialist and in two days had more power than ever with better mileage. I won't let anyone other than them touch my truck ever since. These guys are great and make you feel like family. Hard to find anyone this honest at a fair price. I highly recommend you give them a try. - Larry B. (5 star review on Google)

Guys who know what they are doing! However, they are better at engine work than transmission work from our experience. I can recommend them for either though. - Jason M. (5 star review on Google)

I can always depend on Gary and his staff. They have got me out of an occasional breakdown. I would not trust anyone else with my diesel trucks. - Tera B. (5 star review on Google)

Great place and great people. - Leia G. (5 star review on Facebook)

What can I say? They are awesome! Very thorough and well trained employees! - Kylee S. (5 star review on Facebook)

Very happy on the job they did on my truck. Very professional shop. - Jorge P. (5 star review on Facebook)

If I owned a diesel pickup, DPSI mechanics would be the ones I would go to for keeping my truck in tip top shape. I've seen what they can do...give 'em a try! - Darlene D. (5 star review on Facebook)

Always doing quality work for me! I always feel good about going on a long job after I pick my truck up from there. - Chris B. (5 star review on Facebook)

Excellent service!! From changing oil to replacing the transmission in a 2001 pick up. These guys are awesome.. - Dona K. (5 star review on Facebook)


Great shop! We are from southeast TX and we are on the road most of the year. Hard to find trustworthy shops when your not from the area. They did a great job with our truck!!! And pricing didn't kill us. - Tina G. (5 star review on Facebook)

  • Jasper Pref
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  • Duramax Diesel
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  • Ford Power Stroke Diesel
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  • Wifi Available

104 Industrial Dr | Inman, KS
(620) 585-2111
MON-FRI | 8:00 AM - 5:30 PM
CLOSED FOR LUNCH | 12:00 PM - 1:00 PM