2026 GMC Canyon - AT4X AEV recalls

Intermediate steering column defect causing a pronounced dashboard rattle. The dealer (Putnam GMC, Burlingame, CA) diagnosed the issue under warranty, but the required part is on national backorder with no ship date. The vehicle has been out of service at the dealership since September 2, 2026 awaiting the part. This is a steering-related defect on a brand-new vehicle with approximately 1,500 miles.

I’ve included all my repair orders regarding to coolant smell/leak and transmission shutter. I purchased my truck on XXX. We had planned a family vacation to [XXX], and we were driving up when I felt the transmission shutter at around 3:00 to 5:00 p.m. while cruising at approximately 55 to 62 mph. Since then, I’ve noticed it happening more frequently. I took the truck to GMC dealer Jack Hanaia at [XXX] (I believe it was in XXX). I expressed my concerns, and they couldn’t find any issues with the transmission, along with the coolant leak. They claimed they couldn’t find a leak, but the service advisor could smell a strong coolant leak. Later on March 5th the coolant leaked, and I got a differ

The contact owns a 2026 GMC Canyon. The contact stated that while his son was driving approximately 30 MPH, the passenger’s side rear brakes were making an abnormal crunching sound. No warning lights were illuminated. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 100.

GM pushed a system update to my truck last week. I noticed the front bumper sensors are no longer working. In addition, the auto start-stop function no longer works.

I was pushing the accelerator, and the transmission hesitated at about 45 mph. For about 2-3 seconds, the vehicle would not upshift. The RPMs revved, and finally the vehicle slam-shifted into gear. The vehicle drove normally for the rest of the drive cycle.