Mon – Fri 8:30AM – 6:00PM / Sat 8:30AM – 2:00PM

  • (281) 727-9374

  • Info@alltechdiesel.com

AllTech Diesel Houston TX contact diesel repair shop
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Houston, TX · East Side

Talk to a Real
Diesel
Technician.

No automated replies. When you reach AllTech Diesel, a technician answers. Get honest answers about your truck — fast.

Call Us Directly
(281) 727-9374
Mon–Fri 8:30AM–6PM · Sat 8:30AM–2PM
Send an Email
Info@alltechdiesel.com
We respond within 1 business day
Visit the Shop
4215 Guessena St.
Houston, TX 77020 · Get Directions →
Get Started Today

Schedule Your Appointment

Fill out the form and our team will confirm within 24 hours. New customers — use code ATDMAR2026 for a free diagnostic. For urgent repairs call us directly at (281) 727-9374.

We confirm within 24 hours · No payment required to book · Free cancellation
Business Hours
Monday8:30 AM – 6:00 PM
Tuesday8:30 AM – 6:00 PM
Wednesday8:30 AM – 6:00 PM
Thursday8:30 AM – 6:00 PM
Friday8:30 AM – 6:00 PM
Saturday8:30 AM – 2:00 PM
SundayClosed
Shop Location
Address
4215 Guessena St.
Houston, TX 77020
Get Directions on Google Maps
Fleet Account?
We offer dedicated fleet maintenance programs with priority scheduling, multi-unit pricing, interval tracking, and a dedicated coordinator for your account.
Discuss Fleet Pricing
AllTech Diesel
4215 Guessena St.
Houston, TX 77020
Mon–Fri 8:30AM–6PM · Sat 8:30AM–2PM
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Quick Answers

Before You Call

Do you offer a free diagnostic?
Yes — new customers receive a free initial diagnostic scan. We connect to your ECM, pull the full fault history, and explain what we find before quoting any repair.
How long does a diagnostic take?
Most diagnostics are completed same-day, often within a few hours. We'll give you a time estimate when you arrive. Complex or intermittent faults may require additional time.
Do you work on all diesel brands?
Yes. We service Cummins, Detroit Diesel, Caterpillar, Volvo, Paccar, Mack, International, Freightliner, Kenworth, Peterbilt, Isuzu, Hino, and Navistar. Call us to confirm your specific platform.
Can I walk in or do I need an appointment?
Walk-ins are welcome during business hours. To guarantee same-day service, booking ahead is recommended — especially for fleet vehicles or complex diagnostic work.
Do you work on gas-powered vehicles?
No. AllTech Diesel is 100% diesel-focused. We don't service gas-powered cars or trucks — our entire operation is built around heavy-duty diesel platforms.
How do I set up a fleet account?
Call us directly at (281) 727-9374 or use the form above and select the Fleet Maintenance Program. We'll schedule a free consultation to build a program around your operation.
Don't Wait on Your Truck

Call Now.
We Pick Up.

A real technician answers the phone at AllTech Diesel. Get straight answers about your truck without the runaround — and schedule service today.

Call (281) 727-9374 Book Appointment

Mon–Fri 8:30AM–6PM  ·  Sat 8:30AM–2PM  ·  4215 Guessena St., Houston TX

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