2020 Chevrolet Suburban Reliability Score & Common Problems

Owners of the 2020 Chevrolet Suburban report issues primarily related to steering firmness and loss of power steering. Complaints frequently mention the steering wheel becoming firm while driving, sometimes accompanied by a "Service Power Steering - Drive with Care" message, typically occurring around 55,000 miles. Another reported issue is the vehicle shutting off while driving, leading to a loss of power steering and brakes. A separate complaint describes intermittent electrical malfunctions affecting steering assist and other systems, occurring at very low mileage (816 miles). These issues suggest potential safety implications such as temporary loss of steering control, which could be particularly hazardous in challenging driving conditions.

Owners of the 2020 Chevrolet Suburban report issues related to vehicle speed control, with two distinct problems emerging. One complaint describes a sudden loss of propulsion and throttle while driving on the interstate, accompanied by a clicking noise and a drop in RPM to zero, despite normal oil pressure and engine lights. Another owner reports that the adaptive cruise control hesitates and fails to maintain adequate distance when the lead vehicle slows, requiring manual brake application to prevent collisions. This issue occurs frequently during highway driving, particularly at speeds above 65 mph. Both complaints highlight potential safety concerns due to loss of control or inadequate system response, which could be significant for prospective buyers to consider.

Owners of the 2020 Chevrolet Suburban report issues related to the airbag system, with one complaint involving a crash where none of the airbags deployed after a side impact at approximately 45 mph while turning onto a highway. Another owner describes an intermittent "Service Safety Restraint System" error code, suggesting a potential electrical issue, although this model year is not covered by the existing technical service bulletin for later models. These complaints highlight potential safety implications, particularly concerning airbag deployment failure during collisions. Owners experiencing these issues report them at various times, with no specific mileage range noted.

Owners of the 2020 Chevrolet Suburban report issues with the suspension system, particularly when the vehicle is in 4-wheel drive auto mode. Complaints frequently mention a jolt from the right front side of the vehicle during acceleration at speeds over 50 mph, which has been a consistent problem since purchase. While the mileage range isn't specified for this issue, it is noted as an ongoing concern. Safety implications are suggested by the jolt experienced during driving, though no crashes or loss of control are directly reported. Prospective buyers should be aware of this pattern, especially if considering vehicles with similar configurations.

Owners of the 2020 Chevrolet Suburban frequently report transmission issues, particularly with the vehicle's solenoid and shifting between gears. Symptoms described include the SUV's inability to accelerate beyond 40 mph and inappropriate shifting from 2nd to 3rd and 3rd to 4th gear. A whining noise before gear shifts is also noted. These issues appear to manifest within the first year of ownership, though specific mileage is not detailed. While no crashes, fires, or loss of control are reported, potential buyers should be aware of these transmission-related complaints.

Owners of the 2020 Chevrolet Suburban report issues with the brake system, with symptoms including complete brake failure and the brake pedal going to the floor without warning. One owner describes a scenario where the brakes failed entirely while exiting a parking lot, requiring replacement of the master cylinder, brake booster, and vacuum pump. Another report involves a crash, with the brakes becoming stiff and unresponsive, resulting in a collision with a neighbor's house. These complaints highlight safety concerns due to the potential for loss of vehicle control, particularly in situations requiring immediate stopping. No specific mileage range is mentioned, but the issues appear to be severe enough to render the vehicle undrivable.