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GM Duramax diesel DEF tank failures, limp mode and long repair delays – owners’ share concerns

GM Duramax diesel DEF tank failures are increasingly popping up in social media and owners are furious about the problems ...

Senators Argue DEF Requirements Should Be Tossed for Trucks in Cold Weather

Diesel exhaust fluid freezes at 12 degrees Fahrenheit, leaving ice road truckers in a dangerous predicament when their big ...
Yahoo

EPA targets truck engine makers on DEF system failures

Add Yahoo as a preferred source to see more of our stories on Google. EPA wants to eliminate truckers stranded by engine failures. (Photo: Jim Allen/FreightWaves) WASHINGTON — In a move to end “limp ...
Yahoo

EPA aims to keep diesel trucks on the road

Add Yahoo as a preferred source to see more of our stories on Google. EPA guidance expected to keep trucks on the road after DEF system failure. (Photo: Jim Allen/FreightWaves) The Trump ...
CCJ

EPA asks truck OEMs to end 5 mph engine derate for aftertreatment woes

U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin on Tuesday urged engine and equipment manufacturers to revise system software to prevent sudden loss of power from engine derates ...
Overdrive

EPA announces end to 5-mph DEF derates for new and existing trucks

The Environmental Protection Agency on Tuesday announced a "fix" to "protect American farmers, truckers, and other diesel equipment operators from sudden speed and power losses caused by diesel ...
SlashGear

How Much Diesel Exhaust Fluid (DEF) Does A Truck Use?

Diesel Exhaust Fluid (DEF) is a crucial component in modern diesel vehicles, introduced to comply with US Environmental Protection Agency (EPA) regulations that began in 2010. It's a solution made up ...
Overdrive

Aftertreatment demons: Keep your diesel emissions system clean to prolong life

You’re gazing idly at the landscape when a yellow light on the dash winks on, spoiling the serenity: Your diesel particulate filter (DPF) needs attention. In most situations, the warning doesn’t ...
Transport Topics

EPA Gives Engine Makers 30 Days to Provide DEF System Data

The data collected will allow EPA to independently evaluate ongoing system failures. As of Feb. 2, engine manufacturers have 30 days to provide EPA with data on model years 2016, 2019 and 2023 ...
GM Authority

EPA To Investigate Diesel Engine DEF System Failures

The U.S. Environmental Protection Agency (EPA) is escalating its response to consumer complaints regarding Diesel Exhaust Fluid (DEF) system failures, announcing a new investigation aimed at major ...
Truckinginfo

EPA Wants to Know: Are DEF De-Rates Really Needed for Diesel Emissions Compliance?

The Environmental Protection Agency is asking diesel engine makers to provide information about diesel exhaust fluid system failures as it considers changes to emissions regulations. Ad Loading... The ...