Most common 2018 Chevrolet Tahoe problems
Share of the 105 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Chevrolet Tahoe complaints by model year
Best Tahoe years: 2020, 2014, 2018. Years to avoid: 2021, 2023, 2015, 2011, 2022. Compare all years →
2018 Chevrolet Tahoe recalls (3)
Service brakes, hydraulic › Power assist › Vacuum
General Motors LLC (GM) is recalling certain 2018 Cadillac Escalade, Chevrolet Silverado 1500 and Tahoe, GMC Sierra 1500 and Yukon vehicles equipped with either a 5.3L or 6.2L V8 engine. The output of the mechanical vacuum pump can decrease over time, decreasing the amount of vacuum/power brake assist.
Remedy: GM will notify owners, and dealers will reprogram the Electronic Brake Control Module, free of charge. The recall began November 11, 2020.
Service brakes
General Motors LLC (GM) is recalling certain 2015-2020 Chevrolet Suburban, Tahoe, and GMC Yukon, and 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles equipped with a 5.3-liter engine, a 3.08-ratio rear axle and four-wheel drive.
Remedy: GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall began December 11, 2019. Owners may contact Chevrolet customer service at 1-800-630-2438 or GMC customer service at 1-800-462-8782.
Service brakes, hydraulic › Power assist › Vacuum
General Motors LLC (GM) is recalling certain 2015-2017 Cadillac Escalade, 2014-2018 Chevrolet Silverado, GMC Sierra, 2015-2018 Chevrolet Suburban, Tahoe, GMC Yukon vehicles. The amount of vacuum created by the vacuum pump may decrease over time.
Remedy: GM will notify owners, and dealers will reprogram the Electronic Brake Control Module, free of charge. The recall began October 8, 2019.
What 2018 Chevrolet Tahoe owners say
Engine & cooling all 22 →
The contact owns a 2018 Chevrolet Tahoe. The contact stated that while starting the vehicle, the engine made abnormal rattling and knocking sounds. No warning light was illuminated. The vehicle was taken to the dealer, who determined that the camshaft and valve train needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling); however, the VIN was not included in the recall. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 90,000.
The contact owns a 2018 Chevrolet Tahoe. The contact stated while driving 35 MPH, the vehicle inadvertently lost motive power. The contact was able to pull over to the shoulder of the roadway, where the vehicle was restarted. The ABS and check engine warning lights were illuminated. The vehicle was towed to the dealer, who diagnosed a failure with the crankshaft push rods, resulting in damages to the engine. The contact was informed that the crankshaft and the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 83,000.
Transmission & drivetrain all 20 →
The contact owns a 2018 Chevrolet Tahoe. The contact stated that while parked on a slight incline and shifting into reverse, the vehicle started driving down the driveway with the brake pedal depressed. The contact stated that the vehicle drove approximately 15-feet in reverse. The contact stated once on a flat service, the vehicle suddenly stopped. During the failure, the message "driving assist" was displayed. The failure had occurred on another occasion. The cause of failure was not yet determined. The local dealer was notified of the failure. The manufacturer was not yet contacted. The failure mileage was approximately 54,000.
The contact owns a 2018 Chevrolet Tahoe. The contact stated that while driving at an undisclosed speed, the vehicle began to shake excessively, prompting the contact to discontinue driving the vehicle. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the transmission. The vehicle was repaired, but the failure reoccurred. The manufacturer was not notified of the failure. The failure mileage was 80,000. The VIN was not available.
Brakes
The contact owns a 2018 Chevrolet Tahoe. The contact stated while driving 40 mph and making a left turn, the vehicle started hesitating. The steering wheel ceased. There was no warning light illuminated. The contact took the vehicle to the local dealer, where it was diagnosed with needing all four tires to be replaced. The contact replaced all four original tires however, the failure persisted. The contact took the vehicle back to the local dealer, where it was diagnosed with needing an alignment. The contact stated that the wheels were aligned however, the vehicle but continued to experience the failure. The contact stated she had the vehicle serviced four times but continued to experience the failure. The contact also stated that the low brake fluid warning flashed off and on, even after adding brake fluid to the vehicle. The vehicle was not repaired but was pending repairs. …
The contact owns a 2018 Chevrolet Tahoe. The contact stated that while attempting to start the vehicle, the brake pedal had to be depressed very hard to start the vehicle. The contact stated that while depressing the accelerator pedal, the vehicle failed to respond as intended. A dealer was contacted. The vehicle was taken to the dealer where it was diagnosed and determined that the brake vacuum pump was not operating correctly and needed to be replaced. The vehicle was not repaired. The contact related the failure to a Special Coverage Adjustment: N182202780 (Brake Assist Decreased Due to Vacuum Loss); however, the VIN was not included. The manufacturer was notified of the failure, and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was 72,000.
2018 Chevrolet Tahoe engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 5.3L 8-cyl | 6-speed automatic | RWD | 16 / 23 / 19 |
| 5.3L 8-cyl | 6-speed automatic | 4WD | 16 / 22 / 18 |
| 6.2L 8-cyl | 10-speed automatic | 4WD | 14 / 22 / 17 |
| 6.2L 8-cyl | 10-speed automatic | RWD | 14 / 23 / 17 |
EPA ratings. Class: SUV.
Frequently asked questions
Is the 2018 Chevrolet Tahoe a good car?
Based on 105 owner complaints filed with NHTSA, the 2018 Tahoe rates better than average: 56% fewer complaints than a typical year of the Tahoe at the same age. It is one of the best Tahoe years by this measure. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2018 Chevrolet Tahoe?
The engine & cooling — 22 complaints, 21% of all complaints for this model year, most often about engine › crank/camshaft position sensor. Next are the transmission & drivetrain (20) and brakes (19).
How many recalls does the 2018 Chevrolet Tahoe have?
There are 3 recalls for the 2018 Chevrolet Tahoe, the most recent from October 1, 2020 (vacuum). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Chevrolet Tahoe?
The best years by complaints, compared at the same age, are 2020, 2014 and 2018. Years to avoid or approach with caution: 2021, 2023, 2015, 2011 and 2022. See the full Chevrolet Tahoe years comparison.
At what mileage do 2018 Chevrolet Tahoe problems happen?
The median mileage reported in complaints is about 43,000 miles; 53% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.