There are 2 stored owner reports matching the electrical system leading-label group for the 2020 GMC Yukon XL in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 2 of 2 matching reports.
Open the full vehicle complaint log (all categories)Pressed the air condition button and engine turned off while driving. Vehicle engine knocking and engine shaking. Will not go over 30 miles an hour Take it to the dealership and all they say is it's the air filter. Engine light turns on Traction control light stays on Warning of decrease engine speed Engine not shifting properly High rpm's Dealer says there's nothing wrong
The contact owns a 2020 GMC Yukon XL. The contact stated that upon attempting to start the vehicle with the key fob, messages that the key fob was not connected, to put the key fob in the compartment, to push the brake, and that the battery light was low, were displayed. The contact stated that he was able to start the vehicle by pressing the Push to Start button. The contact stated that the failure occurred intermittently. Additionally, the contact stated that upon starting the vehicle, the engine made an abnormally loud banging sound, and then the engine made an abnormal clunking sound that persisted while the vehicle was idling. The contact turned off the vehicle. The vehicle was towed to the dealer, where it was diagnosed that two pistons had separated from the engine. The dealer recommended an engine replacement. The dealer also informed the contact that a manufacturer field technician would perform an additional inspection of the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 11,000.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Sep 13, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.