Not every vehicle fits into a simple category. From emergency response units and agricultural machinery to custom-built and specialist commercial vehicles, these machines are designed for demanding, unique roles — and they require equally specialised care. At Kearney Group Diagnostics (KGD), we provide Specialist Vehicle Diagnostic Services built to handle the complexity, power, and precision that these vehicles demand.
What Are Specialist Vehicle Diagnostics?
Specialist vehicle diagnostics involve the use of advanced diagnostic equipment and software tailored to non-standard or purpose-built vehicles. These may include:
- Emergency response vehicles (ambulances, fire engines, police units)
- Agricultural and construction machinery
- Recovery and towing vehicles
- Custom-modified or imported vehicles
- Specialist transport and service trucks

Unlike standard passenger cars or vans, these vehicles are often equipped with bespoke electrical systems, control modules, and attachments that require a deeper level of analysis. Our technicians use manufacturer-level diagnostic tools and custom protocols to identify and correct faults across every component of your specialist vehicle.
Why Specialist Diagnostics Are Essential
When it comes to specialist vehicles, downtime isn’t an option. Whether it’s an ambulance responding to a call or a recovery truck on a busy motorway, performance and reliability are critical.
Here’s why our customers trust Kearney Group Diagnostics for their specialist vehicle care:
- ⚙️ Tailored Expertise – We understand the complexity of specialist vehicles and know how to diagnose them properly.
- 🕒 Reduce Downtime – Fast, accurate diagnostics mean quicker repairs and minimal interruption.
- 💰 Cost Efficiency – Catching early-stage faults prevents major component damage and costly rebuilds.
- 🧭 Full System Coverage – We scan every control module, from the powertrain to custom auxiliary systems.
- 🌍 Compliance Ready – Stay within UK emissions and operational safety standards.
What’s Included in a Specialist Diagnostic Check?
Our diagnostic process is designed to leave no component unchecked. Using high-level diagnostic systems, we examine:
- Engine and transmission control units
- Electrical wiring and custom installations
- Emergency lighting, siren, and radio systems
- Hydraulic and pneumatic systems
- Auxiliary power systems (PTOs, cranes, lifts, etc.)
- CAN-bus communication and ECU synchronisation
Once complete, you’ll receive a detailed diagnostic report highlighting fault codes, performance data, and recommended repairs. We present everything in clear, simple terms — ensuring you understand exactly what’s happening with your vehicle and why.
Why Choose Kearney Group Diagnostics?
At Kearney Group Diagnostics, we specialise in what others overlook. Our team combines deep technical knowledge with a genuine passion for problem-solving. From rare imports to purpose-built commercial units, we’ve seen — and fixed — it all.
We use only the latest diagnostic technology, ensuring precision and compatibility with multiple systems and vehicle types. And because we value transparency, you’ll always get a clear explanation and honest pricing — no surprises, no jargon.
Our on-site fitting service means we can also carry out component replacements, system installations, and repairs as part of your appointment. Plus, you can browse our online shop for quality accessories, CarPlay systems, and more — all with the option to book installation directly at checkout.
Our Heritage: The Legacy of Catherine Kearney
KGD was founded in memory of Catherine Kearney, whose name continues to inspire our passion for quality, care, and service excellence. Her values of honesty, kindness, and hard work are reflected in every job we take on — from diagnostics and repairs to customer service and beyond.
For us, it’s not just about fixing machines; it’s about helping people — the drivers, operators, and businesses that depend on their vehicles every single day.
Supporting Specialist Fleets
If you manage a fleet of emergency or commercial specialist vehicles, our Business Fleet Division offers complete diagnostic and maintenance solutions. We provide routine checks, fault finding, and repair coordination — keeping your vehicles compliant, safe, and ready for action 24/7.
When to Book a Specialist Diagnostic
Book a diagnostic check if you notice:
- Electrical faults or inconsistent lighting systems
- Poor performance or irregular engine behaviour
- Hydraulic or system malfunctions
- Warning lights or ECU communication errors
- Unusual noises, vibrations, or loss of power
Even if everything seems to be running fine, regular diagnostics ensure your specialist vehicle stays reliable, compliant, and safe.
Keep Your Specialist Vehicles in Peak Condition with Kearney Group Diagnostics
From emergency response units to heavy-duty machinery, we understand what your vehicle means to your mission — and we’re here to make sure it performs at its best, every time.
✅ Book your specialist vehicle diagnostic today at Click Here
📞 Or call us on 08000 096165
At Kearney Group Diagnostics, we don’t just fix vehicles — we help power the people and businesses that keep Britain moving.