Power assist: vacuum
Risk. A decrease in brake assist can increase the brake pedal effort and distance required to stop the vehicle, increasing the risk of a crash.
NHTSA has logged 106 owner complaints about the 2018 Chevrolet Tahoe, most often about the engine. It is covered by 3 safety recalls, and for recall 19V-645 the manufacturer reports only 75% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through November 3, 2026. Updated daily.
106 complaints grouped by the system owners reported.
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Engine | 21 | 0 |
| Power train | 20 | 1 |
| Service brakes | 16 | 2 |
| Electrical system | 13 | 0 |
| Steering | 11 | 0 |
| Fuel/propulsion system | 7 | 0 |
| Forward collision avoidance | 4 | 1 |
| Vehicle speed control | 3 | 1 |
| Engine and engine cooling | 3 | 0 |
| 13 other systems | 21 | 2 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Risk. A decrease in brake assist can increase the brake pedal effort and distance required to stop the vehicle, increasing the risk of a crash.
Risk. Unintended activation of the driveline-protection system will cause unintended braking on the wheel on the opposite side of the failed sensor, causing the…
Risk. As the vacuum level drops, the brake assist decreases, increasing braking effort, extending the distance required to stop the vehicle, thereby increasing the…
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Chevrolet.
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Tahoe median. How we score
2018 Chevrolet Tahoe SUV RWD in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.



Recent engine complaints filed with NHTSA, shortened. Personal details are removed.
The contact owns a 2018 Chevrolet Tahoe. The contact stated that while driving 15 MPH, there was an abnormal sound coming from the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed with engine failure. The vehicle was taken to the dealer where it was diagnosed with…
05/15/23 - AFM Lifter failure - Complete Top End Rebuild under extended warranty purchased when i bought the Tahoe - Preowned certified. Cost $2,000.00 Out Of Pocket ( Days Chevrolet Repaired 86,350 miles) 09/06/23 - Transmission failed - Warranty paid except $2,000.00 (94,000 Miles) 02/02/26 -…
Out of nowhere without any warning light all of a sudden couldn’t back up when geared into reverse to reverse. Turned the vehicle off and back on, then was able to reverse. Left parking lot and was on the road and vehicle started loosing speed, then put into park with hazard lights. When attempting…
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.