Owners have reported 2 crashes and 1 fire to NHTSA for the 2020 Chevrolet Suburban. These are unverified owner reports, not confirmed defect rates.
Owner complaints9
POWER TRAIN
Owners of the 2020 Chevrolet Suburban frequently report transmission failures, often occurring around 100,000 miles. Common symptoms include a lack of acceleration, erratic RPM behavior, and loud noises from the transmission, with some reports of severe shuddering. Multiple owners note the absence of warning lights or diagnostic codes prior to failure, complicating early detection. Safety implications are significant, as several complaints describe situations where the vehicle suddenly loses power while driving, posing risks of accidents. This pattern of transmission issues is noted by both dealerships and independent mechanics, who confirm seeing similar failures regularly.
Owner complaints7
ENGINE
Owners of the 2020 Chevrolet Suburban frequently report engine issues, with multiple complaints highlighting problems related to the camshaft and cylinder lifters. Symptoms often include shuddering, stuttering, misfiring, and difficulty accelerating, sometimes accompanied by illuminated check engine lights. Several reports note these issues occurring around 95,000 miles, though some mention problems at lower mileages. Notably, one complaint involves a fire that resulted in a total vehicle loss during a test drive with a new engine. Prospective buyers should be aware of these engine-related issues, particularly concerning the potential for significant repairs and safety risks.
Severity signals: 0 crash, 1 fire, 0 injury reports
Owner complaints4
ELECTRICAL SYSTEM
Owners of the 2020 Chevrolet Suburban report various electrical system issues, with the most common pattern involving intermittent electrical failures affecting safety and powered components. Symptoms include power steering and windshield wiper functionality turning on and off unexpectedly, and the instrument cluster going black. One report links these issues to a Technical Service Bulletin, suggesting a known problem. Complaints also include unrelated issues like a mileage discrepancy and an electrical short leading to major component replacements, but these do not form a clear pattern. The electrical issues are reported around 85,000 miles, and while no crashes or fires are mentioned, the loss of power steering and other functions could pose safety risks.
Owner complaints4
STEERING
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.
Owner complaints2
VEHICLE SPEED CONTROL
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.
Owner complaints2
AIR BAGS
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.
Severity signals: 1 crash, 0 fire, 0 injury reports
Owner complaints2
SUSPENSION
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.
Owner complaints2
UNKNOWN OR OTHER
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.
Owner complaints2
SERVICE BRAKES
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.
Severity signals: 1 crash, 0 fire, 0 injury reports