Certified by John's Truck Service Inc. • Mar 08, 2026
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Introducing John's Truck Service Inc., Tucumcari's premier full-service Cummins, CAT, and Detroit Diesel dealer. For over 40 years, we've remained as the area's preferred diesel engine repair company.
We can provide you with all of the preventative services you need. From changing filters to tightening your belts and beyond. We'll ensure all of your critical diesel engine parts are getting the attention they need to function flawlessly. From minor to major repairs, John's Truck Service Inc. is your one-stop shop for diesel repairs. We specialize in a wide range of services including, diesel engine repairs, maintenance, diagnostics, and much more.
Contact us today to schedule an appointment for service. You'll be glad that you did.
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Certified by John's Truck Service Inc. • Mar 08, 2026
Certified by John's Truck Service Inc. • Mar 08, 2026
Reviews
4.6
115 reviews
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100
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David Rehler
Jan 30, 2026
5.0
I had an emissions related issue on my motor home that threatened to shut down our trip. John’s was able to get us in first thing the next morning and get us back on the road by noon. It is hard to find this level of caring these days. I am
Very impressed with this shop.
Update: we went back after the problem came back. Not John’s fault at all. A very expensive failure of scr. They were able to find one and get it next day. I had an estimate from a nearby Cummins dealership which was much higher. Plus I got some additional work completed and still less cost. My impression has only improved. I was actually going to drive 500 miles back here because service this good is hard to find. But was able to get the job competed while I was here. A+++++
AB
abelardo barboza
Jan 28, 2026
5.0
Best shop in town hands down. Superb experience with April and Steve, thank you for getting us out on the road fast.
- Abel's Transport LLC
MM
Mccquestbjj
Jan 13, 2026
5.0
Best shop in tucumcari!! Nobody in the area can do oem software for freightliner, cummins, or caterpillar. Good luck using boss shop or loves for computer diagnostic they can't do squat!! Johns is working on paccar software so drivers out there won't have to get towed to the nearest dealer if they are down. They can also work on volvo as long as it's a cummins engine and not a volvo engine. Unfortunately they don't do tire work or oil changes . They leave that stuff for the wannabe shops in the area
MB
matthew battle
Dec 19, 2025
5.0
On the road 24hrs latwr d9nt mess around go here
PR
Paul Rotzler
Nov 25, 2025
5.0
Excellent company and staff. After breaking down on i40 w'ith some overheating issues, the tow driver suggest Johns Truck Service. The tow driver said that Steve, one of the owners, was a Cummins guru, and mentioned that it was a Cummins dealer. we were met by Steve upon our arrival, and he and his staff made me feel right at home. I ended up spending two days in Tucumcari, leaving my truck there to finish being fixed.
Steve and his staff identified some other issues and made sure to communicate with me along the way. They even were willing to do some fabrication work for me (which looks excellent) and more in depth customization work on the truck for me.
Throughout the entire dealings with the business, everyone I interacted with was amazing. They hire genuinely good people here. I got the impression that they are all like a family at the business, and that each one really appreciated your business.
I really wish the business was closer to home! But, they are exactly in the right spot to help those that get stuck between Amarillo and Albuquerque.
Frequently Asked Questions About John's Truck Service Inc.
What types of diesel engines does John’s Truck Service Inc. specialize in?
John's Truck Service Inc. specializes in Cummins, CAT, and Detroit Diesel engines.
What services are offered at John’s Truck Service Inc.?
They provide diesel diagnostics, diesel engine repairs, powertrain diagnostics, RV engine repairs, and truck engine repairs.
What are the business hours for John’s Truck Service Inc.?
John's Truck Service Inc. is open Monday through Friday from 8:00 AM to 5:00 PM and closed on Saturdays and Sundays.
Where is John’s Truck Service Inc. located?
They are located at 6297 Quay Rd, AP 0.6, Tucumcari, NM 88401, USA.
What payment options does John’s Truck Service Inc. accept?
They accept American Express, Cash, Discover, MasterCard, and Visa.
How long has John’s Truck Service Inc. been in business?
John's Truck Service Inc. has been serving the Tucumcari area since 1976.
Are there any accommodations near John’s Truck Service Inc. for overnight stays?
Yes, nearby accommodations include Buckaroo Motel, Tristar Inn Xpress, and Payless Inn.
What local attractions can I visit near John’s Truck Service Inc.?
You can visit the New Mexico Route 66 Museum, Rockabilly on the Route museum, and the Route 66 Monument near the service center.
Is there a place nearby to get food or relax after visiting John’s Truck Service Inc.?
Yes, nearby options include Caravan Xpress Grill, a pub and bar, as well as Pizza King for pizza dining.
What memberships or associations does John’s Truck Service Inc. hold?
They are members of the Better Business Bureau (BBB) and the National Federation of Independent Business (NFIB).
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