Truck Repair & Service

At General Truck Parts, we offer comprehensive heavy-duty truck repair and maintenance services backed by decades of drivetrain expertise. Our skilled technicians specialize in transmission and driveline service, brake system repair, suspension and steering work, and complete preventive maintenance programs. We also provide expert care for HVAC and electrical systems, battery and fuel service, PTO maintenance, and king pin and exhaust system repairs.

Transmission Service (Heavy-Duty)

• Transmission fluid replacement (manual & automatic)
• Clutch adjustment or replacement
• Torque converter diagnostics
• PTO (Power Take-Off) system checks

Differential Service

• Gear oil replacement
• Ring and pinion gear inspection
• Seal replacements to prevent leaks
• Check for whining or vibration under load

Driveline Service

• Driveshaft repair/replacement
• U-joint & CV joint inspection and lubrication
• Center support bearing replacement
• Angle/alignment checks to reduce vibration

Brake System Service

• Air brake system diagnostics
• Brake pad, drum, rotor, and shoe replacement
• ABS diagnostics and repair
• Slack adjuster and brake chamber inspections

Suspension & Steering Service

• Leaf spring and air suspension repair
• Kingpin, tie rod, drag link, and bushing service
• Power steering pump, gearbox & fluid service
• Alignment services for reduced tire wear

HVAC System Service

• AC recharge & leak testing (R-134a or R-1234yf)
• Heater core & blower motor service
• Thermostat, condenser, and evaporator inspection
• Cab climate control diagnostics

PM Service (Preventive Maintenance)

• DOT inspection preparation
• Scheduled PMs (PM A, B, C)
• Greasing, filter changes, belt/hose checks
• Tire inspection & rotation

Oil & Fluid Service

• Engine oil & filter changes (full synthetic, semi)
• Coolant system flush
• Transmission, axle, and hydraulic fluid checks
• DEF system service (Diesel Exhaust Fluid)

King Pin Service

• Complete kingpin bushing replacement
• Axle eye inspections and machining
• Essential for front axle stability & alignment

Electrical System Repair

• ECM/ECU diagnostics
• Starter & alternator service
• Trailer light and 7-way plug repairs
• Battery cable and fuse diagnostics

Battery Service

• Load testing and voltage checks
• Battery replacements (Group 31, etc.)
• Terminal cleaning and cable replacement
• Charging system diagnostics

Exhaust & Fuel System

• DPF (Diesel Particulate Filter) cleaning/replacement
• EGR valve and cooler service
• Fuel injection system diagnostics
• Exhaust leak and stack repairs

PTO Service (Power Take-Off)

Power Take-Off (PTO) systems are critical for trucks operating auxiliary equipment (e.g., dump beds, hydraulic pumps, blowers, etc.). Proper maintenance ensures power is reliably transferred from the transmission to external systems. Services Include:

• PTO unit installation, removal & replacement
• Hydraulic pump coupling and shaft alignment
• PTO clutch adjustment and rebuilds
• Leak detection & seal replacement
• Gear inspection and lubrication
• Electrical PTO switch diagnostics
• Troubleshooting engagement issues (electric/hydraulic/mechanical)
• Custom PTO setups for vocational trucks (dump trucks, mixers, tankers)