Two problems related to adaptive cruise control have been reported for the 2024 GMC Sierra 2500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2024 GMC Sierra 2500 based on all problems reported for the 2024 Sierra 2500.
Unexpected braking at highway speeds. This has at least 50 times at highway speeds. The truck has experienced repeated false forward collision alerts and un-commanded automatic emergency braking events. Adaptive cruise control frequently detects roadside objects and vehicles in adjacent lanes, particularly on curves. The vehicle has never had windshield replacement, front-end damage, suspension modifications, or aftermarket accessories. This is creating a safety hazard because the truck brakes unexpectedly in traffic at any speed.
On 3 separate instances the past few months the truck slammed on brakes for no apparent reason. And 2 separate times the past week or so the truck suddenly and uncontrollably accelerated — first at gas a station convenience store and almost ran over old lady, secondly while waiting line on arterial entrance ramp!.
| Adaptive Cruise Control problems | |
| Warnings problems |