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Service bulletins for the 2019 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.

1006 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Heating and air conditioning are shown. Show all

Bulletins, newest first
18-NA-1622024-02-02. Service bulletin. EQUIPMENT; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This technical bulletin provides a procedure for air conditioning refrigerant desiccant replacement due to A/C Not Cooling or refrigerant loss.
PIT5099G2023-12-26. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.
PIP5540J2023-01-30. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW:ELECTRICAL HEATING ELEMENT. 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.
PIT5099F2022-07-25. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.
12-01-37-001F2022-07-12. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This service bulletin provides information to dealership personnel on a new refrigerant (R1234yf) for A/C service.
18NA0202021-05-03. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:AIR HANDLER/CHAMBER, DUCTS, AND VALVES. This technical bulletin provides a procedure to replace the charge air cooler due to moisture getting inside of it and causing a malfunction indicator lamp illuminated with DTC P0300 and/or P0299/P2227.
18NA1622020-09-28. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This technical bulletin provides a procedure for air conditioning refrigerant desiccant replacement due to A/C Not Cooling or refrigerant loss.
18NA1622019-10-28. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This technical bulletin provides a procedure for air conditioning refrigerant desiccant replacement due to A/C Not Cooling or refrigerant loss.
N192266090 022019-09-30. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:APPLIANCE:AIR CONDITIONER. N192266090 02 - Service Update. On certain 2019 model year Chevrolet Equinox, Malibu, and GMC Terrain vehicles, the charge air cooler outlet may become disconnected from the throttle body. A malfunction indicator light (MIL) will set on the instrument panel and a reduced engine power message will illuminate followed by reduced engine power. One or more of the following diagnostic trouble codes may be present: P0172, P0299, P0101, P1101, P0506. The vehicle may also run rough and could stall at low speed or idle conditions. Dealers are to install a charge air cooler retainer kit.
N192266090 012019-09-30. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT ADAPTIVE/MOBILITY. N192266090 01 - Service Update. On certain 2019 model year Chevrolet Equinox, Malibu, and GMC Terrain vehicles, the charge air cooler outlet may become disconnected from the throttle body. A malfunction indicator light (MIL) will set on the instrument panel and a reduced engine power message will illuminate followed by reduced engine power. One or more of the following diagnostic trouble codes may be present: P0172, P0299, P0101, P1101, P0506. The vehicle may also run rough and could stall at low speed or idle conditions. Dealers are to install a charge air cooler retainer kit.
N1922660902019-09-30. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:APPLIANCE:AIR CONDITIONER. N192266090 - Service Update. On certain 2019 model year Chevrolet Equinox, Malibu, and GMC Terrain vehicles, the charge air cooler outlet may become disconnected from the throttle body. A malfunction indicator light (MIL) will set on the instrument panel and a reduced engine power message will illuminate followed by reduced engine power. One or more of the following diagnostic trouble codes may be present: P0172, P0299, P0101, P1101, P0506. The vehicle may also run rough and could stall at low speed or idle conditions. Dealers are to install a charge air cooler retainer kit.
PIT5663A2019-09-16. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; EQUIPMENT:ELECTRICAL. This PI was written to inform dealers of a condition where a "Climate off" message will be displayed on the screen even thought the HVAC system is fully operational. Dealers are also informed that engineering is working on a solution
PIP5651C2019-08-12. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
19NA0062019-07-29. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This technical bulletin provides a procedure to replace the HVAC case with the redesigned part.
PIT56632019-04-08. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This PI was written to inform dealers of a condition where a "Climate off" message will be displayed on the screen even thought the HVAC system is fully operational. Dealers are also informed that engineering is working on a solution
18NA1622019-03-25. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. This technical bulletin provides a procedure air conditioning refrigerant desiccant replacement due to refrigerant loss.

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