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Service bulletins for the 2019 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.

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

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
N192273630-012020-03-23. Service bulletin. ELECTRICAL SYSTEM; ENGINE; FUEL SYSTEM, DIESEL. Emission - General Motors has decided to conduct a voluntary emissions recall involving certain 2018-2019 model year diesel engine vehicles. The engine control module (ECM) in these vehicles may not adequately diagnose or illuminate the malfunction indicator lamp (Check Engine Light) when frequent regeneration of the diesel particulate filter (DPF) occurs. Dealers are to program the engine control module (ECM) with corrected software.
19NA2792020-03-02. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ELECTRICAL SYSTEM. This Technical bulletin provides a procedure for dealers/technicians on Radio Software Version V807 Over-the-Air Update.
N1922824802020-02-18. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE; BACK OVER PREVENTION. Customer Satisfaction Program. Certain vehicles, may have several wires going to the body control module (BCM) damaged due to the installation/removal of the aftermarket LoJack alarm system from the vehicle. Dealer will inspect the wires going to the BCM and knee bolster for evidence that a LoJack alarm system was removed and repair as necessary.
PIP57082020-02-10. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates to the technician the vehicle concern of starter flex plate having broken teeth. The can create a noise during starting or may even have the starter spin but not crank over the engine. The document directs the technician to replace the flex plate and the starter assembly.
PIP5700A2020-02-10. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. This Preliminary information communicates to the dealer technician that the part numbers for the internal wiring harnesses for the 8 speed RWD transmissions are not listed in the Electronic Parts Catalog. Technicians are to refer to the information provided in this document to obtain the internal wiring harness part numbers by application.
19NA1532019-12-16. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. This technical bulletin provides a procedure to replace the torque converter and inspect the front pump and the TEHCM for metal.
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.
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.
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.
19NA1952019-10-28. Service bulletin. ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of Intermittent OnStar Inoperative, DTC B101D-39, Red LED and Clock Date Time Inaccurate.
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.
PIT5668B2019-10-15. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This preliminary information is to clarify a normal fluctuation of the temperature gauge.
PIT5630C2019-10-15. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates the possible setting of B101D-39 in the OnStar module and advises of over the air software update to resolve the concern.
PI0592E2019-09-23. Service bulletin. ELECTRICAL SYSTEM. This preliminary information bulletin provides information om Service Programming System (SPS) Error Codes E4398, E4399, E4403, M4404, M4413, E4414, E4423, E4491 or E6961).
PIT57052019-09-16. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This Preliminary information communicates a noise from the front end over bumps originating at the battery hold down retainer at inner fender.
19NA1502019-08-26. Service bulletin. ELECTRICAL SYSTEM; ENGINE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin advises the tech that intake camshaft actuator solenoid bank and the intake actuator park lock solenoid have the same electrical connector and may be swapped causing the concern.
PIP5571A2019-08-12. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a possible concern of two connectors being swapped during a repair causing a P0016 code to set.
PIT5626A2019-08-12. 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.
100845001G2019-07-29. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. This bulletin provides information for electrical ground repairs using new General Motors replacement fasteners with conductive finish.
060847001O2019-07-29. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. This bulletin explains the labor operation numbers used for submitting warranty claims for module reprogramming and not when replacing a module.
19NA1272019-07-29. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This informational bulletin provides information for dealers/technicians on Check Engine Light Illuminated with DTC?s P0106, P0046, P20EE, P249D, and/or P249E Set.
PIT5324B2019-07-08. Service bulletin. ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. 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.
PIC6365A2019-07-08. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This Preliminary information communicates information to dealers advising certain Over the air updates and USB updates have been temporarily suspended.

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