Warnings Problems of GMC Canyon

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.

Vehicle alerted driver that ecs and. Rake assist was needed and disabled abs and forward collision while lighting up multiple warning lights on dashboard. Lights eventually turned off leaving a check engine light on. Multiple codes pulled from system using obd2 reader. Communication bus b offline and u0074, u0151, u0447,u0452 all at same time.

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Vehicle brakes stopped working while driving. Dash board lit up and stated system brake failure. Also stated “do not exceed 43mph”.

Collision avoidance comprised of following gap and alarm / auto braking does not function. One dealer after two trips and unable to repair stated that gm is working on a new software update and until that is available repair is not possible. No date was provided by dealer or gm customer service as to when this update would be available. Second dealer stated that system was in fact not functioning, and asked me to return in a couple days, so he could research the issue, he knew nothing about a pending update. Both dealers stated that no alarms or codes were present in spite of failure.

The pre-collision warning and the lane keep assist are disabled while driving frequently. It does this on its own. I have had into the shop one other time for the same thing. It’s happening more frequently now. Current mileage is 25,153. Also the personal settings on the dashboard reset on its own every five or so key cycles. Obviously there’s some kind of software problem.

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I am experiencing two safety issues with my Canyon 1) forward collision alert system is triggered unnecessarily (e. G. , when there isn't a car in front of me, when the car in front is far away and not posing a risk). I took it to GMC a few months back since there was a previous recall for this system and they said they stated it was fixed. It is not fixed. I turned off the automatic braking tied to the forward collision alert because it has previously braked automatically in a dangerous manner. 2) digital gauge cluster / speedometer is black / blank upon startup about 5% of the time. Since there is no analog speedometer, this means I am driving without knowing my speed. This is very dangerous. I have tried disconnecting my battery and resetting the electronic system but this issue still persists sometimes.

Headlights flicker all the time regardless of speed radar cruise control will slam on the brakes for no reason even when there's nothing in front of me. (seems to happen more at night) blindspot monitoring will randomly turn on for no reason.

The forward collision light comes on and stays on for no reason while driving. The only way to reset is to cycle the key. Took it to the dealership with the light on and they said no problem found.

The theft alarm has gone off five times since I purchased the vehicle in September, dealership has been noted and has been in there for it and still goes off. Display screen froze up and did not reset until I was done driving and the vehicle was turned off for a while. The crash detection light came on and vehicle stopped itself with nobody in front of me or anybody coming towards me. The dealership has had the car for two weeks now, and they say there’s still no fix for it.

Vehicle stability control systems light comes on sporadically and stalls the power steering. In other words, the power steering turns off at any time and dangerously on a highway, when the vehicle stability control lights comes on the dashboard. The first diagnosis (may27, 2023) of the above issue was performed at green brooks, a certified NJ GMC service dealership yielded no results from their inspection. A second diagnosis was needed due to the vehicle's malfunctioning danger to me and other drivers on the road. The certified GMC service dealership ewing Buick/GMC TX diagnosis (June 12, 2023) showed a "steering gear internal torque sensor" costing two thousand one hundred and eight dollars and fifty cents ($2,108. 50) to complete. The codes were c0545 00 stored in dscm followed by s14849247 requiring steering gear replacement. The total cost including labor cost was two thousand seven hundred and ninety dollars and eighty-eight cents ($2,719. 88).

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