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 engine failure. The contact was informed that the lifters and cam shaft needed to be replaced. The vehicle was repaired. In addition, the contact was informed that the failure was a known failure with the vehicle. The failure mileage was approximately 113,000.
The worst 2018 Chevrolet Tahoe problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine23
- Transmission20
- Brakes19
- Electrical13
- Steering11
- Fuel system8
- Driver assistance5
- Acceleration3
- Body3
- Airbags2
- Lights2
- Suspension2
- Visibility2
- Seat belts1
- Seats1
- Tires1
Specific symptoms reported on the 2018 Chevrolet Tahoe
Check engine light 9Engine failure 6Stalling 6Transmission failure 5
Recalls 3
Service brakes, hydraulic: power assist: vacuum
- What is wrong
- 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.
- 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.
- Remedy
- GM will notify owners, and dealers will reprogram the Electronic Brake Control Module, free of charge. The recall began November 11, 2020. Owners may contact GM customer service at 1‑866‑522‑9559, Cadillac customer service at 1‑800‑458‑8006 or Chevrolet customer service at 1‑800‑630‑2438. GM's number for this recall is N202300860.
Recall number 20V603000 · Recall details
Electronic stability control (ESC)
- What is wrong
- 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. If a wheel-speed sensor fails, while the vehicle is traveling between 41 and 60 mph in four-wheel or automatic mode, the Electronic-Brake Control Module (EBCM) software may activate the driveline-protection system.
- 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 vehicle to pull to one side unexpectedly, increasing the risk of a crash.
- 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. GM's number for this recall is N192261050.
Recall number 19V761000 · Recall details
Service brakes, hydraulic: power assist: vacuum
- What is wrong
- 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.
- Risk
- As the vacuum level drops, the brake assist decreases, increasing braking effort, extending the distance required to stop the vehicle, thereby increasing the risk of a crash.
- Remedy
- GM will notify owners, and dealers will reprogram the Electronic Brake Control Module, free of charge. The recall began October 8, 2019. Owners may contact Chevrolet customer service at 1‑800‑630‑2438, Cadillac customer service at 1‑800‑458‑8006 or GMC customer service at 1‑800‑462‑8782. GM's number for this recall is N192268490.
Recall number 19V645000 · Recall details
Technical service bulletins for the 2018 Chevrolet Tahoe 1,274
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This service bulletin provides information about GM Accessories
- Unknown or other
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- Unknown or other
- This PI provides diagnostic tips for diagnosing electric trailer brakes issues.
- PI to help diagnose A/C concern
- Unknown or other
- Unknown or other
- Unknown or other
- Unknown or other
2018 Chevrolet Tahoe fuel economy
Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.
| Engine | Drive | City | Highway | Combined |
|---|---|---|---|---|
| 5.3L 8‑cyl | RWD | 16 | 23 | 19 |
| 5.3L 8‑cyl | 4WD | 16 | 22 | 18 |
| 6.2L 8‑cyl | 4WD | 14 | 22 | 17 |
| 6.2L 8‑cyl | RWD | 14 | 23 | 17 |
What 2018 Chevrolet Tahoe owners say
Most recent owner complaints, unedited.
The exterior paint is bubbling and chipping in some areas.
The contact owns a 2018 Chevrolet Tahoe. The contact stated that while the vehicle was stationary, there was an abnormal explosion and the rear glass exploded in the rear of the vehicle. The contact believed that the glass had exploded without impact. The contact reached out to a window company and stated that similar vehicles had the same issue. The failure mileage was 139,000.
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 - Broken Driver Side Motor Mount Replaced $350.00 (159,000 Miles) 02/28/26 - Rear end Failure 03/20/26 - AFM Lifter Failure Again - Been in the shop since then. No warranty/ Pay out of Pocket (160,010 Miles)
Vehicle was driven the day before the incident occurred. The morning of the incident, the vehicle was parked, off and not running. A notification sent to my phone indicating a critical battery low 11.1V reading. Vehicle would not start. Vehicles battery and alternator charging system was tested and passed. All systems are good. Vehicle continues to give critical low voltage over night while the vehicle is off and not running.
LT275 65 R18 123/120 R DOT 1 BE BP AT 21 My daughter has pictures of the tires, all four tires (all bought at the same time) 05/6/23 from Discount Tire, are splitting along the side wall, originating at the tread line, we have talked with Discount tire, there are 40,000 miles approximately on the tires. They have been appropriately rotated and balanced. There have been no repairs of the tires. This is noted to be a defect, not normal wear and tear of the tire, per Discount Tire. They have offered 423.00 credit to purchase new, and have come back with 50% off new tires. Since this is a defect, verse actual wear and tear I do not believe that is appropriate. 75-100% of the replacement value. The tires should reasonably last between 5-6 years. The defect increases the risk of a blow out on any one or several of the tires. Discount Tire in Lubbock has confirmed that there is an issue, but I am not happy with their resolution.
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 to get off the road for safety reasons tried putting into drive and the car then drove in reverse. Local Fire department came and called in the local police dept for assistance and pushed vehicle off to the side and tow company came and took to the auto shop with information today of the transmission going out, and with that causing happening causing the Fluid to Smell Burnt and Full. The auto shop test Drove and made It 30 Feet and Would Not Move. Transmission Is Failing and Causing the Concern.
Everytime it rains really hard, my drivers side b pillar where the handle and seat belt is, is soak and wet from a leak. This happens all the time. I have had my sunroof checked, my windshield checked and drain tubes checked. There is never any water or wetness on the floor, its only the headliner. This has been an on-going issue. I have been investigating if there are other tahoes doing the same and yes there are and 1 had went to a body shop and they found out that the manufacturer welds were not welded correctly, which causes water to get into the roof. This can cause mold and eventually other issues. It has stained my headliner. Something needs to be done about this because I cannot afford to have a body shop fix this kind of repair and I should not have to for as much money as I have paid for this vehicle. I have very young grandkids that ride in this vehicle and one has very bad allergies against mold. And it is not fair that I eventually will have to get this fixed because it will also cause rust. Please do something about this.
When it rains really hard, the roof in the b pillar leaks above the seat belt area into the headliner. My husband who is an autobody technician has made sure my sunroof lines are clear and the windshield moldings and seals are good. He had another one at his place of employment with the same issue and it was the roof welds, which are done by the manufacturer. I am hearing more and more tahoe owners with this same problem. As much as these vehicles costs us, this should not be happening. This causes mold in the roof and rusting. This has to be looked into because this is an expensive repair if I need to have this problem fixed and could also cause health issues if not addressed with the mold.
Unexpected acceleration
Compare the 2018 Chevrolet Tahoe
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Other model years
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Questions about the 2018 Chevrolet Tahoe
Is the 2018 Chevrolet Tahoe reliable?
Owners have filed 106 complaints about the 2018 Chevrolet Tahoe, fewer than a typical Tahoe model year.
What is the 2018 Chevrolet Tahoe year score?
The 2018 Chevrolet Tahoe scores 86 out of 100 (good). The score compares it with the other model years of the Chevrolet Tahoe: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2018 Chevrolet Tahoe?
Engine and cooling, with 23 complaints, typically around 83,000 miles. Next is transmission (20).
How many recalls does the 2018 Chevrolet Tahoe have?
3 recalls, covering service brakes, hydraulic and electronic stability control (esc).
What year does the Chevrolet Tahoe have bad engine?
The Chevrolet Tahoe model years with the most engine complaints are 2021 (188 complaints), 2023 (147 complaints) and 2022 (84 complaints).
What gas mileage does the 2018 Chevrolet Tahoe get?
Official estimates for the 2018 Chevrolet Tahoe range from 17 to 19 mpg combined. The most efficient version (5.3L 8-cyl, RWD) gets 16 city and 23 highway.
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