Technical Service Bulletin N192287100-01 — 2012 GMC TERRAIN

Special Coverage (Revised correction statement, service procedure and customer reimbursement). Some vehicles, equipped with a 2.4L engine and certified to the EPA Bin 4 emission standard and the California Cleaner Federal Vehicle option of Bin 4 emission standard, may exhibit catalytic converter and/or oxygen sensor performance degradation, without illumination of the malfunction indicator lamp (check engine light), as a result of excessive engine oil consumption (less than 2,000 miles [3,200 km] per quart [0.946 L] of engine oil) due to piston ring wear. This special coverage covers the condition described above for a period of 10 years or 150,000 miles (241,400 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. Determine if the vehicle has, or has been repaired for, an excessive engine oil consumption condition due to piston ring wear by: 1. Performing an excessive engine oil consumption test, or 2. Examining IVH or other service records to determine if a repair has been performed to remedy excessive oil consumption due to piston ring wear. If an engine oil consumption test indicates the vehicle currently has an excessive engine oil consumption condition due to piston ring wear, or if the vehicle has been repaired for an excessive engine oil consumption condition due to piston ring wear, replace the catalytic converters and oxygen sensors. See also Special Coverage bulletins 16118, N192291100 or N192291101 ?Excessive Engine Oil Consumption? for repair of engine and other components.