GJ’s Service LLC

We offer extensive professional services for major and minor truck issues. GJ’s Service LLC is a certified NAPA Truck Service Center, so we only offer the best parts and services for your fleet. Our clean, well-equipped shop is located in Lone Rock, WI, and our excellent, well-trained team makes it their priority to get your fleet vehicle back on the road quickly. Below are some of the many repair services that we offer:

A/C & Heating
Aftermarket
Air Filter Replacement
Axle Replacement
Battery Service
Belts & Hoses
Brake Systems
Clutch Repair
Computer Diagnostics
DOT Inspections
Diesel Service
Driveshaft/Axle/Differential
Electrical
Exhaust System
Filter Change
Fleet Service
Fluid Flush Exchange
Heavy Duty Trucks



Light Duty Trucks
Light Replacement
Mobile Repair
Mufflers & Exhaust
Oil Change
Power Steering
Preventative Maintenance
RVs & Motorhomes
Radiator & Engine Cooling
Roadside Assistance
Scheduled Maintenance
Seasonal Maintenance
Steering & Suspension
Tire Pressure
Tire Sales & Service
Transmission/Transfer Case
Welding