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Service bulletins for the 2012 GMC Terrain

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1841 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
N1922871002020-11-30. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR; EQUIPMENT; ENGINE AND ENGINE COOLING. Special Coverage Adjustment. 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 the vehicle has, or 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. Note: The special coverage terms for excessive engine oil consumption may be different than the special coverage terms for the catalytic converter and oxygen sensor degradation. The repairs will be made at no charge to the customer.
N1922681812020-11-30. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Emissions Recall. General Motors has decided to conduct a voluntary emissions recall involving certain 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. The performance capability of the vehicle?s catalytic converters may have degraded, such that efficiency is reduced. In addition, the oxygen sensors may provide inaccurate information to the engine control module which manages engine combustion air-fuel ratios. If these conditions occur, tail pipe emissions may exceed allowed limits, without providing any notification to the driver. The malfunction indicator lamp (check engine light) will not illuminate. Dealers are to replace both catalytic converters and both oxygen sensors.
N1922681802020-11-30. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. Emissions Recall. General Motors has decided to conduct a voluntary emissions recall involving certain 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. The vehicle?s post-catalyst oxygen sensor may provide inaccurate information to the engine control module, which manages engine combustion air-fuel ratios. If this condition occurs, tail pipe emissions may exceed allowed limits, without providing any notification to the driver. The malfunction indicator lamp (check engine light) will not illuminate. Dealers are to replace the post-catalyst oxygen sensor.
20NA2132020-11-30. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE AND ENGINE COOLING. This service bulletin provides information on Improved Oil Filter Gasket Design for Spin-On Oil Filters PF63, PF64 and PF48.
16NA2222020-11-30. Service bulletin. ENGINE. This bulletin provides information on Engine Concerns that could result from lack of scheduled maintenance, improper service or aftermarket calibrations.
PIP5628C2020-11-16. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
18NA1152020-10-26. Service bulletin. ENGINE AND ENGINE COOLING. This Bulletin provides inspection/diagnosis/correction information on a cold start misfire and/or rough idle and DTC P0300 that may also be set.
16NA3382020-08-31. Service bulletin. ENGINE; POWER TRAIN. This Bulletin provides guidelines for Dealers Not Required and for Dealers Required to Contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns for Canadian Dealers only.
PIP5180C2020-08-10. Service bulletin. ELECTRICAL SYSTEM; ENGINE. This Preliminary Information communication provides information to the technician about vehicles that have hard start, extended crank, or black smoke from the exhaust when starting. Technician will need to perform fuel quality test, spark test, and a compression test. Technician should also install a vacuum gauge prior to cold start and watch needle for signs of a sticking valve.
PIP5226D2020-08-10. Service bulletin. EQUIPMENT; ENGINE. This Preliminary Information communication provides information to the technician about finding needle bearings during an oil change. Technician will gain access to the roller rockers to inspect them. Only replace the roller rocker that is missing needle bearings. Be sure to clean the oil drains to retrieve the needle bearings. Each roller rocker has 66 bearings.
PIP5684B2020-08-10. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT. This Preliminary information communicates the use of air leak diagnostic test tool CH-52250 in addition to the information found in the service manual.
PIP5095G2020-08-10. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon and may also have an oil or coolant leak. Technician may find coolant or oil in a spark plug tube. If the Spark Plug Tube is leaking and it is determined that the oil or coolant is not coming from a leak above the spark plug then replace the cylinder Head, spark plug and coil.
PIP5528F2020-08-10. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates the repair recommendations for misfire and DTC's immediately following HFV6 re-manufactured engines replacement.
PIP5528E2020-08-10. Service bulletin. ENGINE. This Preliminary information communicates the repair recommendations for misfire and DTC's immediately following HFV6 re-manufactured engines replacement.
PIP5257E2020-08-10. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have oil mixed in with the engine coolant. Technician will need to inspect the oil cooler if equipped for possible leaking into the cooling system through the radiator. If no issue found replace the engine as well as all rubber coolant hoses. Also updated to include ALL HFV6 engines Gen1 and Gen2.
16NA3832020-06-22. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY. This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce carbon build-up.
PIP5628B2020-06-15. Service bulletin. ENGINE. This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
PIP5684A2020-06-15. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary information communicates the use of air leak diagnostic test tool CH-52250 in addition to the information found in the service manual.
PIC5650G2020-05-11. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3060, and/or B3935. Technician should not replace any parts for this concern. If unable to duplicate the concern ask if the customer uses any Radio Frequency Identification Devices when the concern is present. Dealer should also direct their customers to the appropriate section in the Owner manuals that references that the device complies.
PIP5257D2020-05-11. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have oil mixed in with the engine coolant. Technician will need to inspect the oil cooler if equipped for possible leaking into the cooling system through the radiator. If no issue found replace the engine as well as all rubber coolant hoses. Also updated to include ALL HFV6 engines Gen1 and Gen2.
18NA0722020-04-27. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ENGINE; FUEL SYSTEM, GASOLINE. This technical bulletin provides a procedure to inspect the fuel system and replace the high pressure fuel pump if faulty for a Reduced Engine Power, MIL On, DTC P228C condition.
040601029J2020-04-06. Service bulletin. ENGINE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin explains Unscheduled Supplemental Services (including Flushing Services and Additives) and the Proper use of GM Simplified Maintenance Schedules.
130601003J2020-03-09. Service bulletin. ENGINE; EQUIPMENT. This technical bulletin provides Correction information to find the cause of oil consumption. Techs should perform an oil consumption test first, check for oil leaks and if rate of oil consumption is high, then replace the pistons and the rings.
16118 012020-02-18. Service bulletin. SERVICE BRAKES, HYDRAULIC; AIR BAGS; ENGINE AND ENGINE COOLING. Special Coverage (Revised Service Procedure). Some 2012 model year Chevrolet Equinox and GMC Terrain vehicles, equipped with a 2.4L engine, may exhibit 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. If this condition is present, an audible rattle or knock from the engine may be heard. The engine oil pressure telltale may illuminate on the instrument panel or the following message may appear in the Driver Information Center: ?Oil Pressure Low ? Stop Engine?. Dealers are to perform an oil consumption test and install new pistons and piston rings. The repairs will be made at no charge to the Customer.
PIP5540F2020-02-10. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates to the technician the need to inspect the induction system for potential icing issues in very cold ambient temperatures. To allow the ice to melt so that it can be drained from the related components. That any of the listed DTC's may set with or without poor engine performance.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.