TRUCK DOWN? WE KEEP FLEETS & OPERATORS MOVING WITHOUT THE GUESSWORK
Our Story
WHO WE ARE
We’re a team of diesel mechanics who believe in doing it the right way — no shortcuts, no guesswork. Every repair is done to factory spec, with honest diagnostics and transparent pricing.
Welby Diesel Repair has earned the trust of New York’s fleet managers, truckers, and local operators through consistent, no-nonsense service.
THE PROBLEM
Most diesel shops operate on guesswork. They replace parts hoping to hit the right one. That wastes your time and money while your truck sits idle.
For fleet managers, it’s worse: no service records, no clear communication, and endless phone calls just to get a status update.
OUR APPROACH
We invest in proper diagnostics first. Our techs use dealer-level tools to pinpoint the exact issue before we touch a wrench.
You get honest answers, clear timelines, and repairs that last. No upsells. No surprises.
< 60 min
Average Diagnosis Time
70%
Same/Next-Day Turnaround
20+
Years Diesel Experience
OUR MISSION
To provide diesel repair services that are reliable, accurate, and built to last because downtime costs you more than just time.
OUR VALUES
Transparency
Precision
Efficiency
Accountability
WHO WE SERVE
Fleet managers overseeing 5-50+ trucks
Owner-operators who depend on their rig
Regional hauling companies across Denver
Construction and heavy equipment operators
CERTIFIED FOR MAJOR BRANDS
WHAT OUR CUSTOMERS SAY
Happy Trucks, Happy Clients
“I was stuck on the road with engine trouble, and Welby Diesel Repair had me back up and running the same day. Honest, fast, and reliable service—I won’t take my truck anywhere else!”
Dennis Burke
“Finally found a shop that knows diesel engines inside and out. The diagnostics were spot-on, and they explained everything clearly before doing the work. Great experience!”
Tyler Garza
“Their team takes care of our entire fleet, and downtime has dropped dramatically since we started using them. Preventative maintenance is always on point, and they treat us like family.”
Carol Greene
“Welby Diesel Repair rebuilt my suspension and trailer setup better than new. The ride is smooth, and I feel confident hauling heavy loads again. Highly recommend their crew.”
Rose Galler
WHO WE SERVE
Fleet managers overseeing 5-50+ trucks
Owner-operators who depend on their rig
Regional hauling companies across Denver
Construction and heavy equipment operators
READY TO BOOK YOUR REPAIR?
Speak with Vinnie or our AI assistant now. No forms. No waiting. Just fast, honest help.
LET'S GET YOUR TRUCK FIXED RIGHT — STARTING NOW
Call now to speak with our lead technician or 24/7 AI assistant. Prefer us to call you? Tap “Request Callback.”