Mobile Onan & Cummins generator repair across Buffalo & surrounding areas. Two easy options — we come to you, or bring it to our shop. Fast diagnostics, honest fixes.
mobile dispatch available
Catch these early. The longer a failing generator runs, the more it can cost — and the worse the timing.
01
Fires up, then quits after a few minutes. Often fuel starvation, low oil pressure, or overheating.
02
Engine runs but no output to your coach. Typically a voltage regulator, brushes, or winding fault.
03
Black, blue, or white smoke — or a hot electrical odor. Stop and call. This one shouldn’t wait.
04
No crank or no catch. Battery, starter, fuel delivery, or control board — we test the whole chain.
We diagnose before we replace. You get a clear read on what’s wrong — and what it’ll actually take to fix it.
We load the generator to spec to confirm it holds output under real demand — not just at idle.
Cranking amps, voltage drop, starter draw, and connections — the usual no-start culprits.
Pump pressure, filters, lines, and carburetor/injection — restoring clean fuel delivery.
AC output, frequency, and regulation checked against manufacturer tolerances.
Onan is the heart of most motorhome power systems — and when it acts up, your whole coach feels it. We diagnose and repair Onan gensets on-site, from no-starts and shutdowns to output and surging problems.
Cummins-powered RV generators are built tough, but they still need expert hands. Our techs know these diesel and gas units inside out — restoring reliable, clean power so you can run your AC and appliances with confidence.
Whatever works for you. Get a mobile technician dispatched to your location, or drop your generator off at our Buffalo shop.
A fully-stocked service van comes to your driveway, storage lot, or campsite. Most diagnostics and repairs are handled on-site, with no towing and no shop queue.
Prefer to drop it off? Bring your generator or coach to our Buffalo shop. Ideal for deeper diagnostics, bench testing, and bigger jobs in a controlled space.
We bring the shop to you — driveway, storage, or campground. No towing your coach across town.
Onan and Cummins systems we know cold. We find the real fault instead of swapping parts and hoping.
If it’s a $40 fix, we’ll tell you. No upsells, no scare tactics — just what your generator needs.
Neighbors, not a national call center. We answer the phone and we know Western New York roads.
Based in Buffalo, rolling across Erie & Niagara County and the surrounding communities. Not sure if you’re in range? Call — we probably cover you.
“Our Onan died the morning we were leaving for a trip. They came to the house, found a fuel pump issue, and had us running by noon. Saved our vacation.”
“Honest is the word. Another shop wanted to replace the whole generator. RV Unlimited fixed the actual problem for a fraction. Won’t call anyone else.”
“Cummins was running but no power to the coach. They diagnosed the regulator on-site and explained everything. Professional and fast.”
Still unsure? Call us — we’ll talk through your symptoms before you book a thing.
Yes. We’re a mobile service — most diagnostics and repairs happen on-site at your home, storage lot, or campground anywhere in the Buffalo area.
We specialize in Onan and Cummins RV generators, and service most major brands found in motorhomes and travel trailers.
Often, yes — same-day dispatch is available depending on schedule and location. Call early and we’ll do our best to get to you fast.
It depends on the fault. We diagnose first and give you an upfront price before any work begins — no surprises, no pressure.
The vast majority of jobs are completed in your driveway. If a repair needs the shop, we’ll explain why and walk you through the options.
One call gets a real technician on the way. Tell us what your generator’s doing — we’ll handle the rest.
We’ll call you right back to confirm.
