Dealer-Level Peterbilt Repairs With Faster Turnaround in Dallas, TX
Every hour your Peterbilt is off the road means lost profit. Whether you’re hauling freight on I-35, I-20, or Route 67, downtime destroys revenue and disrupts your delivery schedule. At Salazar Semi-Truck Repair Inc., located in Dallas, TX, we specialize in full-scale Peterbilt repair and diagnostics for owner-operators, fleets, and logistics companies that demand dealer-level accuracy without dealer wait times.
We combine advanced technology, trained technicians, and fast-turnaround workflow to keep Peterbilt 579, 389, 567, 535 and older 379 models performing at peak power — safely, efficiently, and DOT-compliant.
Why Dallas Fleet Managers Choose Our Peterbilt Experts
Peterbilt trucks are high-precision machines; they need specialists who understand Paccar MX-11/MX-13 engines, SmartLIN electronics, and multiplex wiring. Most generic diesel shops “read codes and replace parts.” We measure, test, and verify root cause before touching a wrench.
Our advantages:
- OEM-Level Software: We use for engine, transmission, and aftertreatment calibration.
- Experienced Heavy-Duty Technicians: 30+ years combined experience specifically on Peterbilt trucks.
- Same-Day Diagnostics: In-shop triage and rapid approval process to minimize idle time.
- Transparent Communication: We send detailed estimates and data reports before any repair.
- Fleet Billing: Consolidated invoices and service tracking for multi-unit operations.
When uptime equals profit, precision matters.
Complete Peterbilt Repair & Maintenance Services
Engine & Performance Diagnostics
- Full engine scan using Paccar ESA for MX-series.
- Fuel-rail pressure, injector trim, and cylinder balance tests.
- Oil-pressure and coolant flow verification to prevent bearing damage.
- EGR cooler service and head-gasket integrity inspection.
Cooling System & Radiator Service
- Radiator core rebuild or replacement.
- Pressure test for coolant leaks and electrolysis.
- Fan clutch and thermostat performance tests.
A/C and HVAC Repair
- Compressor diagnostics (TXV and refrigerant flow).
- Blend-door and climate control module service.
- Cabin filter and drain maintenance to avoid odor and mold.
Suspension & Alignment
- Leaf spring replacement, air bag repair, bushing service.
- Digital three-axle alignment to reduce tire wear and improve MPG.
- Steering linkage and kingpin replacement.
Electrical & Aftertreatment Systems
- SmartLIN and J1939 network troubleshooting.
- DPF/DEF system diagnostics and forced regeneration.
- Sensor voltage and communication testing with load simulators.
Brake & Driveline Repairs
- Air-brake valves, compressors, and slack adjusters.
- U-joint and driveshaft balancing to eliminate vibration.
- ABS sensor and module repair for safety compliance.
Fleet Maintenance Programs
- Preventive Maintenance (PM) inspections every 15k–25k miles.
- Brake/air system inspections repair reports.
- Predictive maintenance using strategic inspections. .
Signs Your Peterbilt Needs Immediate Attention
- Engine light or DEF light on.
- Coolant leak under front end.
- Power loss while climbing grades.
- Excess smoke (black = fuel, white = coolant, blue = oil).
- A/C not cooling in Texas heat.
- Uneven tire wear or suspension lean.
- Frequent DPF regens or failed regen cycle.
- Electrical codes with no visible symptom.
Tip: Address these before a derate — it’s 10× cheaper than towing a loaded tractor.
Frequently Asked Questions
All major Peterbilt platforms, including 579, 389, 567, 535/330 and legacy 379 units. We support mixed fleets and owner-operators across DFW.
Call 214-761-9082 or visit 2323 Chalk Hill Rd, Dallas, TX. Same-day diagnostic triage available when capacity allows.
Yes. We prioritize downed units, active loads and emissions derates (DPF/DEF) with rapid triage and fast turnaround to reduce downtime.
Follow a PM plan: oil & filter intervals, brake/air checks, cooling system tests, alignment & tire inspections, plus periodic OEM-level diagnostics for MX-series engines.
Yes. OEM or high-quality equivalents to protect reliability, emissions compliance and warranty safety.
Most jobs finish in 4–8 hours depending on complexity and parts availability. Same-day options apply to select repairs.
Every Mile Matters Don’t Let Small Issues Cost You Big!
Ignoring minor problems in your Peterbilt truck can lead to repairs costing thousands.
Why risk downtime and lost earnings? At Salazar Semi-Truck Repair Inc.,
we offer affordable diagnostics and fast, expert repairs to keep you on the road.