Honest repair. Cars, trucks, and diesels.
Gerald's Auto Repair is a family-owned shop in Cumming, known for straightforward work since 1975. Bring it in — we'll tell you what it needs, and what it doesn't.
Visit the shop
1360 Atlanta Hwy
Cumming, GA 30040
Mon–Fri 8:00 AM – 6:00 PM
Saturday & Sunday closed
What people say
Read recent reviews from other drivers in Cumming.
Full mechanical repair
Gas and diesel. Cars, pickup trucks, SUVs, and vans. If a job needs a specialist, we say so up front.
- Cars
- Trucks
- SUVs & vans
- Gas
- Diesel
- 4×4 / AWD
Diagnostics & drivability
- Check-engine and warning lights
- Computer scan / OBD diagnosis
- No-start, stalling, misfire
- Loss of power, hesitation, poor mileage
- Noise, vibration, and harshness
- Vacuum and smoke-test leak finding
Engine mechanical
- Engine diagnosis, repair, and replacement
- Timing belts and timing chains
- Head gaskets, valve covers, oil pans
- Rear main and other oil-leak seals
- Intake and exhaust manifolds
- Engine mounts, PCV, misfire repair
- Turbocharger and supercharger service
Diesel
- Diesel engine diagnosis and repair
- Injectors and high-pressure fuel pumps
- Glow plugs and hard-start service
- Fuel filters and water separators
- Turbo, intercooler, and boost issues
- EGR, DPF, DEF / SCR emissions systems
- Pickup diesels (Power Stroke, Duramax, Cummins, and others)
Fuel systems
- Fuel injection (gas and diesel)
- Fuel pumps, filters, and sending units
- Throttle body clean and repair
- Tank, line, and leak service
- Carburetor work on older vehicles
Brakes
- Pads, rotors, shoes, and drums
- Calipers and wheel cylinders
- Master cylinder and power booster
- Hydro-boost (common on trucks / diesel)
- ABS diagnosis and repair
- Lines, hoses, fluid flush, parking brake
Transmission & drivetrain
- Automatic transmission diagnosis and service
- Fluid, filter, and leak repair
- Manual transmission, clutch, and flywheel
- Transfer case (4×4)
- Front and rear differentials
- CV axles, boots, U-joints, driveshafts
- AWD / 4WD driveline
Suspension & steering
- Shocks, struts, and mounts
- Control arms, ball joints, bushings
- Tie rods, rack and pinion, steering box
- Power steering pump and fluid
- Wheel bearings and hubs
- Truck springs and heavy-duty suspension
- Wheel alignment
Cooling & climate
- Overheating diagnosis
- Radiator, water pump, thermostat
- Hoses, fans, and coolant flush
- Heater core and heater controls
- A/C recharge, compressor, condenser
- Cabin heat and A/C performance
Electrical
- Battery test and replacement
- Starters and alternators
- Charging and no-crank problems
- Sensors, wiring, fuses, and relays
- Lights, bulbs, and headlight aim
- Power accessories when the fault is mechanical / electrical
Exhaust & emissions
- Mufflers, pipes, and hangers
- Catalytic converters and O2 sensors
- Exhaust leaks and manifold repair
- Emissions-related check-engine repairs
Tires & wheels
- Mount, balance, and rotation
- Flat repair
- Tire wear inspection
- Alignment after tire or suspension work
Maintenance
- Oil and filter (gas and diesel)
- Air, cabin, and fuel filters
- Spark plugs, wires, and coils
- Belts and hoses
- Transmission, brake, coolant, and gear fluids
- 30 / 60 / 90k-style services
- Wipers, bulbs, and multi-point inspections
Bodywork, paint, glass, and dealer-only programming are not listed here on purpose. Call if you are not sure — we will tell you whether we handle it in the shop.