A number of owners of the 2016-18 Chevrolet with the Duramax engine have been complaining about substandard performance, emission codes, and other engine problems.

Owners may be entitled to compensation or replacement vehicles.

Typical Complaints

I have an 2018 Chevy 2500HD with a Duramax L5P engine introduced in 2017. I've owned it for 19 days and it has been back to the dealer in and around their shop for 12 days. It is showing codes for malfunctioning emission system. The dealer thinks it is a faulty Diesel Particulant Filter and/or can not figure why it is plugging. These issues are not new with the L5P engine and have been around since mandated in 2011 with the then new LML engine. My question is just how wide spread are these issues. And my problem down the road is, if I trade the truck back should I get another and risk the same problems or just try to get my money back and wait for GM to get their act together.

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Source: GM Inside News