If the check engine light is illuminated on your 2023 or 2024 GMC Canyon or 2024 GMC Sierra 1500 pickup truck, GM has discovered a loose wiring connection that may be the culprit, rather than a more serious engine or drivetrain problem.
According to an article featured on GM TechLink, this fault affects only GMC Canyon and GMC Sierra trucks equipped with the turbocharged 2.7L I4 L3B gasoline engine rated at 310 horsepower and 430 pound-feet of torque, which has received TurboMax branding for the 2024 model year.
The fault in 2023 GMC Canyon or 2024 Canyon trucks, and GMC Sierra 1500 pickups, can cause erroneous DTC codes to display when a diagnostic check is run on the vehicle in addition to the illuminated check engine light.
For this reason, The General now instructs its dealership service personnel to check the X175 transmission connector before beginning repairs on GMC Canyon or GMC Sierra engines or transmissions with the symptoms described above. The X175 transmission connector is found at the rear of the automatic transmission.
Service personnel or mechanics should inspect the transmission connector by removing it from the vehicle and ensuring all its terminals are fully seated. Additionally, a tool should be used to check the terminals’ tension, and if this is incorrect, a new terminal should be installed and tested to make sure it is working correctly.
If the transmission connector was faulty, carrying out these steps should cause the check engine light to switch off and the DTC codes to stop displaying.
As a reminder, the 2023 GMC Canyon launched the truck’s third generation, while the 2024 model year adds several changes and updates. The Canyon AT4X AEV Edition was added to the lineup for the 2024 model year, offering numerous trail-ready features for rugged off-road performance.
GM Authority has uncovered pricing details for the 2024 GMC Canyon, which include MSRP reductions for some trim levels and higher base prices for others. In regard to structure, the Canyon rides on an updated variant of the GMT 31XX platform, with the GM T1 platform underpinning the GMC Sierra 1500.