WenmarOpen by Wenmar Pro

Service bulletins for the 2018 Chevrolet Traverse

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.

1108 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
N192266190 022019-11-12. Service bulletin. ELECTRICAL SYSTEM. N192266190 02 - Service Update - (Revised Service Procedure for XT5). Certain vehicles may have an engine control software issue that can occur during an automatic stop/start event. Immediately following an auto-start and while the vehicle is stopped, this condition can cause the engine to run rough, run at reduced power, or, in rare cases, stall. DTC?s P0011, P0021, P0014, and P0024 may set. Dealers will reprogram the engine control module (ECM).
PIT5535E2019-11-12. Service bulletin. LANE DEPARTURE. This Preliminary Information communication provides information to the technician about vehicles that may have Service Front Camera, Service Lane Departure Warning, and Service Lane Keep Assist Message. Technician may find Diagnostic Trouble Code B1008 Sym 4B set. Technician will need to check the windshield to ensure it is not aftermarket. Technician will also check for anything that may impair the front view camera and ensure the camera is properly mounted.
PIP56842019-11-12. Service bulletin. 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.
PIP5540E2019-11-12. Service bulletin. ENGINE. 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.
PIP5601A2019-11-12. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vibration complaints that are one of the most challenging complaints to accurately diagnose and repair. Technician will need to use Pico Oscilloscope Diagnostic Kit to effectively diagnosis vehicles. Technician should drive the vehicle will using the Pico Oscilloscope to record data. After the data is recorded it should be reviewed to determine the root cause of the concern. If a repair attempt made the concern better but not eliminated or had no affect at all, and are requesting assistance from General Motors Technical Assistance Center record another Pico file and save it to the computer. After the new Pico Oscilloscope data has been saved email the data to General Motors Technical Assistance Center in the subject line include ?Vibration? ?Business Associate Code? and the last 8 of the Vehicle Identification Number.
PIT5551E2019-11-12. Service bulletin. FORWARD COLLISION AVOIDANCE. This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".
19NA2152019-10-28. Service bulletin. STRUCTURE. This technical bulletin provides repair information to correct a customer concern of Service Engine Soon (SES) Lamp Illuminated, and technician finding DTC U1345 set.
18NA2972019-10-28. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL). This technical bulletin provides repair information to correct a customer concern of message displaying shift to park when in park.
17NA0732019-10-28. Service bulletin. EQUIPMENT. This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
19NA2062019-10-28. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL). This technical bulletin provides repair information to correct a customer concern of seeing an intermittent Shift to Park message displayed while vehicle is in park.
19NA1862019-10-28. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This technical bulletin provides repair information to correct a customer concern of Speedometer and Tachometer Reading Inaccurately.
N192266190 012019-10-21. Service bulletin. ELECTRICAL SYSTEM. N192266190 01 - Service Update. Certain 2018 model year Buick LaCrosse, Enclave, Cadillac XT5 and Chevrolet Traverse vehicles may have an engine control software issue that can occur during an automatic stop/start event. Immediately following an auto-start and while the vehicle is stopped, this condition can cause the engine to run rough, run at reduced power, or, in rare cases, stall. DTC?s P0011, P0021, P0014, and P0024 may set. Dealers will reprogram the engine control module (ECM).
N1922661902019-10-21. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. N192266190 - Service Update. Certain vehicles may have an engine control software issue that can occur during a stop/start event that is causing drivability concerns such as the engine running roughly. Potential reduced engine power or engine stall with DTC?s P0011, P0021, P0014, and P0024 may set. Dealers will reprogram the engine control module (ECM).
PIP56812019-10-15. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates a poor weld or low weld adhesion for the bracket on the Bank 2 front exhaust pipe causing multiple possible concerns and the recommended repairs.
PIP4670H2019-10-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about a no start or another concern after swapping an Engine Control Module or other modules from one vehicle to another. The Global Architecture electrical system associated with these vehicles does not allow controller swaps between vehicles.
PIP5676A2019-10-15. Service bulletin. EQUIPMENT. This Preliminary information communicates to the technician information on what may be setting DTC P06DE. This is in addition to what is already in the service manual.
PIT57102019-10-15. Service bulletin. EQUIPMENT. This Preliminary information communicates information to help diagnose A/C leak concerns.
PIC6048K2019-10-15. Service bulletin. ELECTRICAL SYSTEM; LANE DEPARTURE. This Preliminary Information communicates to the technician that some customers may comment on the operation of their haptic seat during a Lane Keep Assist event. Lane Keep Assist works differently than Lane Departure Warning. The Lane Keep Assist icon is solid amber, Forward Camera Module is actively commanding a torque to Electronic Power Steering. This means that the driver should also feel some feedback from the steering wheel. No Chimes or haptic in the seat. Lane Keep Assist icon is flashing amber; Forward Camera Module is actively commanding torque to Electronic Power Steering. This will also be accompanied with Lane Departure Warning chimes and haptic in the seat feedback based on the setting chosen in the vehicle settings. This will take place when the vehicle has crossed lane marking by (40 cm) or (15.75 in).
PIP56762019-10-15. Service bulletin. EQUIPMENT. This Preliminary information communicates to the technician information on what may be setting DTC P06DE. This is in addition to what is already in the service manual.
PIP5528D2019-10-15. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary information communicates the repair recommendations for misfire in HFV6 re-manufactured engines.
PIP5632B2019-10-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
PIT3099S2019-10-15. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary Information communication provides information to the technician about installing General Motors Accessory parts/kits. Technicians should refer to Service Information for information regarding most accessories. Technicians may also contact PARTECH and/or the Techline Customer Support Center for additional support.
PIT5551E2019-10-15. Service bulletin. FORWARD COLLISION AVOIDANCE. This Preliminary information communicates a "Forward Collision System Reduced" message displayed on the DIC when the Forward Automatic Braking has been set to the "Alert" setting. This is normal when the FAB has been set to "Alert".
PIT5481E2019-10-15. Service bulletin. STEERING. This Preliminary Information communication provides information to the technician with additional information on the functionality of Lane Keep Assist. Starting with 2016 model year Lane Keep Assist Regular Production Option Code (UHX) replaced Lane Departure Warning Regular Production Option Code (UFL). Lane Keep Assist is designed to assist the driver in keeping the vehicle from drifting out of a driving lane that has clearly identified markings. The electric power steering provides a gentle steering correction if a lane marking has been crossed and the driver has not actively responded.
N1922184302019-09-30. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM; EQUIPMENT. N192218430 - Customer Satisfaction Program. During service, certain vehicles equipped with OnStar (RPO UE1), may have received an incorrect and partially programmed/configured replacement OnStar module. This condition will disable certain OnStar features, including Remote Access (remote start, door lock/unlock, etc.), Connected Access (vehicle diagnostics, dealer maintenance notification, etc.), and Unlimited Access (Turn-by-Turn Navigation). The OnStar Safety & Security Plan (Automatic Crash Response and Stolen Vehicle Assistance) is functional. Dealers are to replace the OnStar module, program, confirm and register the new module correctly by pushing the blue button for confirmation with an OnStar advisor.

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