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Service bulletins for the 2018 GMC Canyon

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.

1246 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
18NA1272019-11-25. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin provides information to check and verify that no leaks are found and clean the flux build up using a good brush.
17NA0762019-11-25. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This informational bulletin explains how the DEF filler pipe grommet can possible expand to the filler cap causing the cap not to seal properly.
16NA3612019-11-25. Service bulletin. POWER TRAIN. This informational bulletin explains possible normal condition of a flare from 1st to 2nd, even if the trans had been repaired for the flare and its still noticed.
16NA3382019-11-25. Service bulletin. 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.
PIT5509E2019-11-12. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.
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.
PIP5370E2019-11-12. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician that some vehicle may have an ?Exhaust Fluid Quality Poor? on the Driver Information Center or a diesel exhaust fluid warning lamp on or other exhaust fluid quality related concerns. Technician will inspect the diesel exhaust fluid for contamination. Technician should use Service Information for Contaminants in Diesel Exhaust Fluid Diagnosis and use special tool J26568 or EN50422 Diesel Exhaust Fluid Refractometer for fluid testing.
PIT5605B2019-11-12. Service bulletin. SEATS. This preliminary information shows how to inspect for and correct a rattle from the rear seat latches.
PIT5512A2019-11-12. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication advises the technician to inspect for aftermarket accessory lamps for a loss of remote functions.
PIT5626B2019-11-12. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates the potential for a wire chafe to cause intermittent communications concerns and multiple MIL's on in the IPC.
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.
PIE05402019-10-28. Service bulletin. ENGINE AND ENGINE COOLING. This engineering informational bulletin is requesting to gather information from the field to determine a root cause for a condition of oil leaking from the valve rocker arm oil control valve. The information gathered will be used to develop a field fix.
030604017N2019-10-28. Service bulletin. FUEL SYSTEM, DIESEL. This Informational Bulletin provides information on availability of Diesel Fuel additives.
18NA1082019-10-28. Service bulletin. WHEELS. This technical bulletin provides a procedure to correct a left lean condition due to architectural corner mass distribution.
17NA3522019-10-28. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin explains how the SOOT readings went from grams to percentage. 2-1-18 Change Subject to reflect the test procedure. 5-1-18 Updated the Information section.
17NA2222019-10-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER. This technical bulletin provides a procedure to replace the turbocharger for vehicles with a condition of Turbocharger Whine Noise due to the blades on the turbo being bent.
17NA1942019-10-28. Service bulletin. ENGINE AND ENGINE COOLING. This informational bulletin advises the technician to test the induction system for leaks for any of the codes listed.
17NA1142019-10-28. Service bulletin. ENGINE AND ENGINE COOLING. This technical bulletin provides a procedure to Tighten the Charge Air Cooler Duct Clamp to correct a condition of an oil leak originating from either the inlet or outlet duct of the turbocharger due to the charge air cooler pipe clamp not being tightened properly.
17NA0732019-10-28. Service bulletin. EQUIPMENT. This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
16NA3252019-10-28. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides a procedure on how to properly identify if there is any aftermarket calibrations loaded on the ECM or and detection of a power up hardware installed.
PIT5324C2019-10-15. Service bulletin. ELECTRICAL SYSTEM; TRAILER HITCHES. This Preliminary Information communication provides information to the technician about installing an aftermarket Trailer Brake Controller. Technician will find that that vehicle is not equipped with Trailering Package Regular Production Option Code Z82, there are also blunt cut wires at the spare tire for the trailer connector. Technician will install the aftermarket Trailer Brake Controller to the blunt wires behind the lefts side kick panel. Technician will install the trailer connector to the blunt wires under the vehicles near the spare tire.
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.
PIT5668B2019-10-15. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This preliminary information is to clarify a normal fluctuation of the temperature gauge.

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