When your rig breaks down on Route 3, you need mechanics who know diesel as well as they know the back roads of Belknap County. J & J Truck Services has been keeping Barnstead's commercial fleet on the road — since day one.
From routine oil changes to full engine rebuilds, our ASE-certified technicians handle makes and models across the commercial spectrum. We're your one-stop shop in Barnstead — no matter how big the rig.
Complete diagnostics, performance tuning, and full rebuilds for Cummins, Detroit Diesel, Volvo, and all major heavy-duty platforms.
Air and disc brake inspection, repair, and replacement. We meet every DOT requirement so you stay compliant and safe on the highway.
DPF cleaning, DEF system repairs, and full emissions compliance testing. Keep your truck passing inspection and the environment happy.
Advanced scan-tool diagnostics for modern ECM/PCM systems. We track down parasitic drains, wiring faults, and sensor failures fast.
Automatic and manual transmission rebuilds, clutch replacements, and power-transfer system service for both day cabs and sleeper rigs.
Breakdown on I-93 or Route 3? We roll out to you — mobile diagnostics, tire changes, jump-starts, and emergency repairs when you need them most.
J & J Truck Services started with a simple idea: commercial drivers in Barnstead deserve a shop that treats their truck like their livelihood. That hasn't changed.
We're a locally owned, full-service heavy-duty repair facility right here on Depot Street. Our team holds ASE certifications and has logged decades on the job — from routine PMs to catastrophic engine failures at 2 a.m.
Whether you're a solo owner-operator or fleet manager for a regional carrier, we give you the same commitment: show up on time, diagnose correctly the first time, and never upsell a repair you don't need.
We're not a chain. We're your neighbors. Here's what sets J & J apart from the rest.
Every estimate is upfront — written, detailed, and approved before we turn a wrench. No surprise charges, no hidden fees. You always know what you're paying.
Time on the road is money. We schedule efficiently, stock common parts, and get you back behind the wheel — not sitting in a lot waiting for a quote.
ASE-certified mechanics with deep experience across all major heavy-duty brands. We invest in continuing education so we stay current with evolving diesel tech.
We live here too. Barnstead isn't just where we work — it's where we raise our families. Your business matters to us personally, and we show up for our community.
Call J & J Truck Services now — we're ready to get you back on the highway fast.
Drop by the shop, give us a call, or send an email — we respond to every inquiry the same day.
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