About G & J Diesel Sales and Service, Inc.
G & J Diesel Sales and Service, Inc. handles diesel engine repair and DPF cleaning for owner-operators and fleet managers across south-central Montana. Located in Billings, Montana, the shop serves the I-90 corridor and surrounding agricultural and freight areas within a 15-mile radius, including nearby communities like Shepherd and Laurel. Diesel-specific work keeps the operation focused on the systems that matter most to heavy-duty truck owners—from engine diagnostics to aftertreatment service. Call (406) 248-6366 for diesel engine repair and DPF cleaning.
Gallery
Our Services
Diesel Engine Repair
DPF Cleaning
Diesel Specialist
Customer Reviews
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Verified Customer
Google Review
I was on a road trip to Alaska when my engine started losing power. The folks at G&J were able to squeeze me in and fix the problem. They even showed me how to fix the hose that came off just in case it happens again on my drive. They were amazing and made sure to take care of me!!
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Verified Customer
Google Review
Response from the owner
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Verified Customer
Google Review
G&J go above and beyond, they stand behind the work being performed, they are friendly and kind and honest. I will definitely return if I have eny issues I my can't tackle. Thank you G&J