18287 - Special Coverage. On certain vehicles equipped with a 6.6L Duramax diesel engine (RPO LGH), the malfunction-indicator light (MIL) may illuminate due to soot build-up in the Exhaust Gas Recirculation (EGR) cooler. This special coverage covers the condition described above for a period of 10 years or 120,000 miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. Dealers are to replace the EGR cooler.
