AI Damage2018 Chevrolet Tahoe: common problems
Owners of the 2018 Chevrolet Tahoe filed 105 complaints with NHTSA, most often about powertrain and engine. The maker issued 768 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 105
- involving a crash
- 6
- Technical service bulletins (TSB)
- 768
What fails most often
- 1 Powertrain 19% of all complaints
- 2 Engine 19% of all complaints
- 3 Service brakes 18% of all complaints
- 4 Electrical system 12% of all complaints
- 5 Steering 10% of all complaints
- 6 Fuel/propulsion system 7% of all complaints
- 7 Forward collision avoidance 4% of all complaints
- 8 Engine and cooling 3% of all complaints
- Powertrain: 20 complaints (19% of all), 1 of them with a crash reported by the owner; manufacturer bulletins for this component: 96.
- Engine: 20 complaints (19% of all); manufacturer bulletins for this component: 70.
- Service brakes: 19 complaints (18% of all), 2 of them with a crash reported by the owner; manufacturer bulletins for this component: 25.
- Electrical system: 13 complaints (12% of all); manufacturer bulletins for this component: 146.
- Steering: 11 complaints (10% of all); manufacturer bulletins for this component: 15.
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 5.3 L · petrol · 8 cyl
- 6.2 L · petrol · 8 cylnamed in 1 complaints
- automatic, 6-speed
- automatic, 10-speed
Drive: RWD, 4WD
Symptoms owners describe
How many of the 105 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Powertrain | 20 | 1 | 96 |
| Engine | 20 | 0 | 70 |
| Service brakes | 19 | 2 | 25 |
| Electrical system | 13 | 0 | 146 |
| Steering | 11 | 0 | 15 |
| Fuel/propulsion system | 7 | 0 | 5 |
| Forward collision avoidance | 4 | 1 | 9 |
| Engine and cooling | 3 | 0 | 118 |
| Structure | 3 | 0 | 41 |
| Vehicle speed control | 3 | 1 | 1 |
| Suspension | 2 | 0 | 23 |
| Visibility | 2 | 0 | 19 |
| Exterior lighting | 2 | 0 | 10 |
| Air bags | 2 | 2 | 6 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
We were in a severe car accident and our airbags did not deploy in our vehicle. We were going about 45 miles an hour and had windshield cracking and severe, severe damage to our vehicle. This was a front side, head on impact.
While driving home, the the FAC, forward automatic crash, indicator light came on, I applied the brakes and watched to my dismay as my vehicle slowed down but would not stop. I applied steady hard pressure until impact with another vehicle in front of me. The FAB, forward automatic braking system never kicked in.
My air bags didn't deploy and this is very concerning and felt this should be reported.
The contact reached out to a window company and stated that similar vehicles had the same issue. The failure mileage was 139,000.
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.
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.
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 owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 559 of 2,102 model years in the NHTSA data (top 27% most complained about).
On average one model year of the Tahoe has 143 complaints (12 years in the data). This year has 105, below average.
What to check before buying
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it
- This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance
- PI to help diagnose A/C concern
- This PI provides diagnostic tips for diagnosing electric trailer brakes issues
- This Preliminary information communicates direction to find information at www.gmupfitter.com for Police…
This Preliminary information communicates direction to find information at www.gmupfitter.com for Police and Special Service Vehicles.
- This preliminary information communicates information about how to determine if a wheel and tires size…
- This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a…
This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
- This preliminary information communicates an issue with aftermarket LED headlights causing IPC warning…
This preliminary information communicates an issue with aftermarket LED headlights causing IPC warning messages and MIL along with several low speed lan DTCs.
- This Preliminary information communicates a diagnostic tip for an issue where the starter stays engaged…
This Preliminary information communicates a diagnostic tip for an issue where the starter stays engaged after the engine starts. Dealers are to suspect/monitor the crankshaft position sensor.
- This service bulletin provides information on Tire Sidewall Irregularities
- This service bulletin provides information on replacing the intake manifold when the engine is replaced…
This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- This Preliminary Information communication provides information to the technician about vehicles that have…
This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit vibration conditions…
NHTSA lists 768 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2018 Chevrolet Tahoe?
Owner complaints to NHTSA most often mention: powertrain, engine, service brakes. Total complaints: 105. The most frequent symptoms in complaint texts: warning lights, check engine (19%), windows, sunroof (10%), jerking, harsh shifts (6%).
How many service bulletins (TSB) were issued for the 2018 Chevrolet Tahoe?
NHTSA lists 768 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2018 Chevrolet Tahoe from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2018 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.