Heavy Duty
Commercial Truck Service
Fleet managers and owner-operators trust Topsham Truck & Auto to minimize downtime. We have the bays, the lifts, and the heavy-duty diagnostics to service Class 3 through Class 8 vehicles.
Schedule Fleet ServiceDiesel Diagnostics
Advanced software reads for Cummins, Duramax, Powerstroke, and heavy equipment ensuring accurate issue resolution.
Transmission Rebuilds
Allison and heavy-duty manual transmission services, fluid flushes, clutch replacements, and complete rebuilds.
Emissions & DPF
Diesel Particulate Filter (DPF) cleaning, forced regenerations, and DEF system troubleshooting.
Air Brakes & Suspension
Comprehensive DOT inspections, air leak diagnosis, compressor repair, and suspension overhauls.
Personal Vehicles
General Auto Repair
Your daily driver is your lifeline. We offer complete bumper-to-bumper service for sedans, SUVs, and light trucks. Quality parts paired with reliable mechanic craftsmanship.
Book an AppointmentFactory Maintenance
Oil changes, fluid services, 30k/60k/90k intervals, timing belts, and seasonal Maine winterizations.
Check Engine Light
Don't guess what's wrong. We scan, diagnose, and pinpoint electrical and mechanical faults quickly.
Brakes & Rotors
Pad replacement, rotor resurfacing/replacement, caliper servicing, and ABS block diagnostics.
A/C & Heating
AC recharges, compressor replacement, and heater core flushes to keep you comfortable year-round.
Need Something Specific?
If you don't see your required service listed, give us a call. Chances are our master mechanics handle it daily.
(207) 555-0199