Automatic Emergency Braking problems of the 2022 GMC Sierra 1500

Current unsafe conditions: post-replacement active safety failures. The vehicle presently exhibits two distinct categories of active, ongoing, and dangerous safety failures, both of which were introduced as a direct result of the engine replacement performed by monument Chevrolet: (a) severe drivability failure. Between approximately 1,500 and 5,000 rpm, the engine repeatedly and without warning lunges forward, drops all power, and lunges again — cycling in this manner between three (3) and six (6) times before stabilizing. This behavior occurs across all gears and driving conditions, which creates a severe and unpredictable hazard particularly when merging into traffic or accelerating onto highways. This failure constitutes an immediate and ongoing risk to the safety of myself and other motorists. (b) complete adas system failure. The frontal crash response warning light is permanently illuminated on the instrument cluster, rendering the following federally relevant safety systems entirely non-functional: (I) automatic emergency braking / forward collision alert; (ii) cruise control; and (iii) lane change assist / lane control system. All of these systems were fully operational and properly functioning before the vehicle was submitted for the engine swap. Their failure is an assembly defect introduced by monument Chevrolet during the course of the repair and constitutes a warranty and safety defect for which general motors, as the manufacturer and warrantor, bears full responsibility. Medical hardship and urgency. This vehicle is my sole personal transportation. It is essential for travel to active medical appointments and upcoming medical procedures. The ongoing failure of general motors and its authorized service network to restore this vehicle to a safe and fully operable condition has created a serious hardship that directly affects my ability to access needed medical care. Yes, it was driven by a service department supervisor. He did experience the issues.

The forward collision assist and lane keep assist are suddenly not working. This seems to be a software or eletrical issue.

Truck drove as expected with no prior warnings. We pulled over for road snacks/drinks upon starting the truck we got a whole slew of warnings and warning lights. The warnings included:. Service esc, service trailer brake system, service brake assist, stering assist is reduced drive with care and finally brake system failure 43 mph top speed. The check engine light, traction control off and brake light stayed on. We slowly drove to an o'reilly's and got the odb code p25a2 (1 of 2 stored) and p25a2 (2 of 2 pending). I then noticed I had an email notification from onstar advanced diagnostics: this is a diagnostic alert for your GMC sierra. Dear victor rubio, an issue with the antilock braking system in your 2022 GMC sierra has been detected. Please service your vehicle within 7 days. The following morning the truck was was started and all seemed normal like nothing ever happened, no warning lights or warning messages our of concern we dropped off at garlyn shelton Buick GMC service center to diagnose the issue. They reported finding code c05b0 for brake fluid leak. Further states no external leaks found, brake fluid test passed 2 of 3 times, recommend needs master cylinder assembly but no replacement parts available.