Owners have reported 4 crashes, 2 injuries and 1 death to NHTSA for the 2018 Chevrolet Tahoe. These are unverified owner reports, not confirmed defect rates.
Owner complaints14
POWER TRAIN
Owners report several powertrain issues with the 2018 Chevrolet Tahoe, with transmission failures being the most common. Symptoms frequently mentioned include the vehicle stalling, jerking, sputtering, and failing to accelerate, often accompanied by the check engine light. These issues typically arise around 54,000 to 110,000 miles, with some owners experiencing complete transmission failure without prior warning lights or codes. Multiple reports highlight safety concerns, such as vehicles shutting off in traffic or losing power on highways, potentially leading to dangerous situations. Additionally, some complaints indicate problems with the torque converter and related contamination issues, which have resulted in significant repair costs for owners.
Owner complaints14
UNKNOWN OR OTHER
Owners of the 2018 Chevrolet Tahoe frequently report issues with electronic systems, including repeated service messages for the side detection system, tire monitor, safety restraint, and camera systems, which can lead to dashboard malfunctions. Several complaints also highlight problems with the air conditioning condenser, with leaks similar to those in earlier models. Additionally, some owners describe structural concerns, such as a broken drive shaft and shattered sunroof, which can occur unexpectedly during normal driving conditions. One reported crash involved airbag deployment, and the subsequent smoke and locked doors raised safety concerns about vehicle egress post-collision. These issues often arise without a clear mileage pattern, and potential buyers should be aware of the varied nature of these complaints.
Severity signals: 1 crash, 0 fire, 1 injury reports
Owner complaints12
SERVICE BRAKES
Owners of the 2018 Chevrolet Tahoe frequently report issues with the service brakes, particularly involving the brake vacuum pump. Common symptoms include a hard-to-press brake pedal and decreased brake assist, often leading to extended stopping distances. Some complaints describe the vehicle pulling to one side when braking, and a recurring "trailer brake system failure" message, even when no trailer is attached. Incidents of total brake failure and difficulty starting the vehicle due to brake issues are also mentioned. Safety implications are significant, with two reported crashes and one injury, and problems often arise around 72,000 to 92,000 miles. Buyers should be aware of potential unresolved issues even if the vehicle's VIN is not covered by existing recalls.
Severity signals: 2 crash, 0 fire, 1 injury reports
Owner complaints11
ELECTRICAL SYSTEM
Owners of the 2018 Chevrolet Tahoe frequently report issues with the electrical system, particularly related to the trailer brake system and the Body Control Module (BCM). Common symptoms include persistent "Service Trailer Brake System" alerts, unintended vehicle slowing, and complete electrical power loss affecting lights and displays. These problems often arise around 5,000 miles or after several years of ownership. Safety implications are notable, as some owners describe unintended braking and steering lock, creating potential loss of vehicle control. Additionally, complaints mention issues with power windows, tailgate sensors, and backup camera visibility, with some owners experiencing these problems at various mileages.
Owner complaints11
STEERING
Owners report recurring issues with the power steering assist in the 2018 Chevrolet Tahoe, often experiencing a sudden loss of power steering functionality. Typical symptoms include the steering wheel becoming difficult or impossible to turn, often accompanied by dashboard messages such as "Power Steering Assist Fault" or "Steering Assist is Reduced." Complaints frequently mention these issues occurring unexpectedly after starting the vehicle, with some reports indicating that battery replacement temporarily resolves the problem. The failures are reported at various mileages, with some as low as 22,000 miles, and others around 120,000 miles. Safety implications are significant, as the loss of steering control has occurred while driving, posing risks of potential collisions or inability to maneuver safely. Buyers should be aware of these issues, particularly if the vehicle is not covered by any special coverage or recalls.
Owner complaints10
ENGINE
Owners of the 2018 Chevrolet Tahoe frequently report issues related to engine misfires and complete engine failures. Common symptoms include flashing check engine lights, sluggish acceleration, and unexpected loss of motive power, often without prior warning indicators. These issues are reported at various mileage ranges, with some occurring just beyond the warranty period, such as at 55,000 miles, while others appear as early as 22,949 miles. Additionally, several complaints mention engine component failures like lifters and crankshaft issues, which sometimes coincide with transmission problems. These engine failures can lead to safety concerns, such as stalling on highways, potentially putting occupants at risk. Buyers considering a used Tahoe should be aware of these patterns and the potential need for significant repairs.
Owner complaints3
FUEL/PROPULSION SYSTEM
Owners report issues with the fuel system of the 2018 Chevrolet Tahoe, including fuel injector seal leaks that result in a gasoline odor in the cabin and garage. Another common issue involves erratic engine behavior, such as unexpected revving and downshifting sensations while driving. Additionally, some owners experience intermittent fuel gauge failures, leading to incorrect readings, and subsequent engine shutdowns while driving, attributed to faulty fuel pressure sensors. These problems occur at unspecified mileages and present potential safety risks, such as loss of vehicle control or engine failure during operation. Buyers should be aware of these reported issues and consider them when evaluating this vehicle.
Owner complaints2
ENGINE AND ENGINE COOLING
Owners of the 2018 Chevrolet Tahoe report issues related to the engine and engine cooling system, with symptoms including abnormal rattling and knocking sounds during engine startup and sudden deceleration with loss of motive power while driving. These issues typically occur at mileage around 90,000 to 104,000. Complaints frequently mention failures of the camshaft, valve train, and SMR lifter, with some owners noting that parts are on back order, delaying repairs. Safety implications include the abrupt loss of power while driving at highway speeds, which could pose a risk of collision. This information may be significant for used car buyers considering this model.
Owner complaints2
VEHICLE SPEED CONTROL
Owners of the 2018 Chevrolet Tahoe report issues related to vehicle speed control, primarily involving the braking system. One complaint describes a scenario where the brake caliper becomes stuck, leading to smoke from the tire and subsequent automatic braking system activation without release, causing the brake to engage unexpectedly at highway speeds. This issue seems to occur after the forward collision system activates, with symptoms persisting even after replacing the ABS sensor. Another complaint highlights the difficulty in transitioning between the brake and gas pedals due to their close proximity, which may delay braking response. These issues suggest potential safety concerns, including unintended braking and delayed driver response, which could be critical at highway speeds or in emergency situations.
Owner complaints2
EXTERIOR LIGHTING
Owners of the 2018 Chevrolet Tahoe report issues with the vehicle's exterior lighting, specifically concerning the headlights and backup camera. One owner describes a malfunction with the Intellibeam headlight assembly, noting that it was not working properly shortly after purchase, and replacement parts were unavailable for over two months. Another owner highlights the backup camera's inability to provide visibility in dark, rainy conditions, which could pose a safety risk when reversing. These complaints arise soon after purchase, suggesting potential early-life issues with these components. No crashes or loss of control are reported in connection with these problems.
