Guides for truck drivers
Plain answers about derates, emissions, DOT and maintenance: what is happening, how urgent it is and what to do next.
Brakes
Derate
- Truck Check Engine Light Colors: Amber vs Red StopAmber check engine, MIL or red stop engine? What each truck warning lamp color means, flashing vs solid, and when you must pull over right away.4 min read
- Engine Derate: Why Your Truck Lost Power and What to DoEngine derate cuts power or speed to protect the engine and emissions system. Learn the common causes, how serious it is, and what to do next.6 min read
DOT
- CVSA Out-of-Service Violations: Top Causes & How to AvoidThe most common CVSA out-of-service violations for trucks and drivers, based on 2025 Roadcheck data, and simple habits that keep you rolling.5 min read
- Semi Truck Pre-Trip Inspection Checklist (Step by Step)A practical semi truck pre-trip inspection checklist: engine, tires, brakes, lights, coupling and cab, plus what FMCSA rules require before you drive.5 min read
Emissions
- DEF Fault Codes Explained: Quality, Level and DosingWhat DEF warnings and SCR fault codes mean, why they lead to a derate, and what to check before you call a shop.5 min read
- DPF Regeneration Guide: Passive, Active, Parked, ForcedHow DPF regeneration works on heavy trucks: passive, active, parked and forced regens, what the DPF and HEST lamps mean, and how to avoid frequent regens.5 min read
- EGR Valve and EGR Cooler Problems: Signs and CausesHow to spot EGR valve and cooler problems on a diesel truck: white smoke, coolant loss, black smoke, low power, extra regens, and when to see a mechanic.5 min read
Maintenance
- Diesel Gelling: Winter Tips for Truck DriversWhy diesel gels in cold weather, the temperatures to watch, how to prevent it with blends and additives, and what to do if your truck's fuel gels.4 min read
- Turbo Failure Signs on a Semi Truck: What to Watch ForEarly signs of turbo failure on a semi truck: whining, low boost, smoke, oil use and power loss, plus common causes and how to make your turbo last longer.4 min read
Business
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