Table 1 shows three common forward collision avoidance related problems of the 2020 GMC Sierra 1500. The number one most common problem is related to the automatic emergency braking (eight problems). The second most common problem is related to the adaptive cruise control (five problems).
| Problem Category | Number of Problems |
|---|---|
| Automatic Emergency Braking problems | |
| Adaptive Cruise Control problems | |
| Warnings problems |
The brakes suddenly activate and cause the vehicle to rapidly stop with no warning of any kind and without any braking action being taken by the driver. Then, the brakes do not release and the vehicle cannot be moved as the brakes remain on. Read details...
My GMC had a terminal engine failure around 5/3/25. This disengaged the esc, parking brake, and driver assist abilities as well as making the truck undrivable. GMC service diagnosed the truck needed an entire new engine. Read details...
Within 3 months (<4000 miles) from purchase vehicle began sputtering with hesitation, and ticking noise from engine while in motion followed by multiple alerts posting on driver display. Vehicle displays loss of power, and struggles to keep up with traffic. Read details...