This technical bulletin provides a procedure to replace the camshaft actuator magnet to correct customer concerns of engine related shudder.
full bulletin at NHTSA ↗2015 Chevrolet Tahoe engine problems
severe Owners of the 2015 Chevrolet Tahoe have filed 18 NHTSA complaints about the engine, typically surfacing around 80,000 miles at roughly $3,100 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Failure mileage
Complaints
18
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2011 Tahoe | 3 |
| 2012 Tahoe | 3 |
| 2013 Tahoe | 8 |
| 2015 Tahoe (this page) | 18 |
| 2016 Tahoe | 12 |
| 2017 Tahoe | 10 |
| 2018 Tahoe | 14 |
| 2019 Tahoe | 15 |
1fire
When does it fail?
Of the 18 engine complaints filed for the 2015 Chevrolet Tahoe, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA engine complaint has been filed on this vehicle in over 9 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
full bulletin at NHTSA ↗The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.
full bulletin at NHTSA ↗This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in other states.
full bulletin at NHTSA ↗This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to oil in system.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of 2015 Chevrolet Tahoes report serious engine issues across a wide mileage range. Lifter collapse is the dominant complaint, occurring between 80,000 and 165,880 miles with sudden loud knocking, misfiring, and complete loss of power. One owner was quoted $16,000 for lifter repair; another found parts unavailable. One owner mentions a recall exists for this issue when the AFM system switches between 5.4L and 8L modes on this engine family, yet no recall notice was received.
AC condenser failure is widespread at surprisingly low mileage (39,000 to 84,000 miles), with leaks at seams, not from impact. Two dealership techs confirmed multiple defective units, yet no recall was issued and costs approached $2,000 per replacement with parts on backorder.
Additional engine problems include thermostat housing failure with cooling fan wire damage, catalytic converter failure, timing chain failure, transmission or torque converter failure causing abrupt highway stops without warning, and fuel line pin-hole leaks from rubbing. One vehicle's air compressor melted at 52,000 miles. Motor mount vibration and harsh vibration during AFM V8-to-4-cylinder switching were reported at very low mileage (9,000 to 12,000 miles), with one dealership confirming manufacturer awareness. Several owners note manufacturer inaction despite clear patterns and multiple complaints online.
Same Chevrolet Tahoe engine reports on nearby years: 2016 · 2017 · 2018
Failure modes owners describe
Lifter collapse / AFM system failure
Engine lifters collapse, often triggering check engine light and misfires. Multiple owners report sudden loud knocking and severe power loss. Some cite AFM (Active Fuel Management) system switching between cylinder modes as a probable cause. Collapsed lifters can damage the crankshaft. One owner reports a Chevrolet dealership quoted $16,000 for lifter repair; another notes lifter parts were unavailable at time of complaint.
When: Between 80,000 and 165,880 miles; one reported at 125,000 miles, another at 129,000 miles
Symptoms owners cite: Loud knocking or banging from engine; Misfiring and sputtering; Loss of power while driving; Check engine light illuminated (often blinking); Engine shuddering; Reduced Engine Power warning light
Codes mentioned: Check engine light (unspecified code)
Repairs/costs cited: One owner cited $16,000 repair cost at dealership. Lifter parts reported unavailable at time of complaint. One motor replacement was performed. One vehicle remained unrepaired; another repair was incomplete.
Recalls/TSBs owners mention: One owner mentions a recall exists for this issue when AFM switches between 5.4L and 8L modes on this engine family. Manufacturer referred one complaint to NHTSA Hotline; another stated failure was inherent to vehicle.
AC condenser failure
AC condenser develops leaks at seams and sauder lines, not from external damage. Multiple owners report seals cracking on the condenser. One owner notes two dealerships confirmed seeing multiple defective condensers, suggesting GM awareness. Failures occur at low mileage (39,000 to 84,000 miles). Replacement cost reported as close to $2,000, and parts were back-ordered at time of complaint.
When: 39,000 to 84,308 miles
Symptoms owners cite: AC blowing hot air; Fluid leaking from engine compartment; No AC function in summer
Repairs/costs cited: Condenser replacement required. One owner reported dealership charging close to $2,000. Parts reported back-ordered until September/October 2017.
Recalls/TSBs owners mention: Owners report dealerships have replaced multiple defective condensers, suggesting manufacturer awareness. No recall issued. Coverage denied or not covered by warranty per owners.
Thermostat housing failure
Thermostat housing fails, triggering temperature gauge malfunction. Owner reported abnormally loud cooling fan noise and accompanying wiring failure to fan.
When: 165,880 miles
Symptoms owners cite: Temperature gauge failure; Abnormally loud cooling fan noise; Check engine light illuminated
Repairs/costs cited: Thermostat housing and fan wiring repaired at independent mechanic.
Catalytic converter failure
Catalytic converter fails, causing vehicle to hesitate and fail to accelerate properly on depression of accelerator pedal.
When: Several days after thermostat repair at 165,880 miles
Symptoms owners cite: Inability to accelerate as intended; Check engine light illuminated
Repairs/costs cited: Catalytic converter repaired at independent mechanic.
Timing chain failure
Timing chain fails shortly after catalytic converter repair. Check engine light re-illuminated same day vehicle was picked up from repair.
When: Same day as catalytic converter repair completion at 165,880 miles
Symptoms owners cite: Check engine light illuminated
Repairs/costs cited: Timing chain failure diagnosed; vehicle remained at dealer unrepaired.
Transmission / torque converter failure
Vehicle stops abruptly on highway without warning lights initially alerting driver. Mechanic diagnosed transmission or torque converter failure. Another mechanic reported seeing same issue on other 2015 Chevy Tahoes. Engine warning light failed to illuminate while vehicle was jerking and stopping.
When: Unknown exact mileage; vehicle serviced at dealer one month prior without recommended repairs
Symptoms owners cite: Abrupt stopping without warning; Jerking while driving; Vehicle whistling; Engine warning light eventually illuminated but delayed
Repairs/costs cited: Mechanic indicated transmission/torque converter failed. Vehicle condition unrepaired in narrative.
Engine and steering wheel seizure
Engine and steering wheel seized while driving, then vehicle restarted and could be driven home, but would not restart once parked. Multiple warning lights illuminated during event.
When: 80,000 miles
Symptoms owners cite: Engine seized while driving at 60 MPH; Steering wheel locked; Check engine light illuminated; Reduced Engine Power warning light; Stabilitrac warning light; Loss of motive power
Repairs/costs cited: Vehicle not diagnosed or repaired. Extended warranty had expired per dealer.
Fuel line rubbing/pin-hole leak
Fuel line develops pin-hole sized leak where line rubs against vehicle undercarriage, causing strong gasoline odor inside and outside vehicle. Owner states dozens of similar complaints found online.
When: Unknown; vehicle purchased October 2023
Symptoms owners cite: Strong gasoline odor from inside/outside vehicle
Repairs/costs cited: Vehicle in shop at time of complaint; problem being diagnosed.
Air compressor melting and shredded metal in engine
Air compressor melted inside engine compartment, exposing shredded metal. Abnormal odor and smoke observed under hood.
When: 52,000 miles
Symptoms owners cite: Abnormal odor from vehicle; Smoke under the hood; Shredded metal exposed; Melted air compressor
Repairs/costs cited: Vehicle not taken for diagnosis or repair; manufacturer notified only.
Motor mount excessive vibration
Vehicle vibrates excessively when brake pedal is depressed. Dealer diagnosed excessive vibration due to motor mounts. Dealer stated manufacturer was aware of issue and working on remedy.
When: 9,000 miles
Symptoms owners cite: Vibration when brake pedal depressed; No warning lights illuminated
Repairs/costs cited: Not repaired; awaiting manufacturer remedy per dealer.
Recalls/TSBs owners mention: Dealer stated manufacturer was aware and working on a remedy.
Severe vibration during AFM V8-to-4-cylinder mode switch
Vehicle vibrates severely when Active Fuel Management system shifts from V8 to 4-cylinder mode. Failure occurred without warning at very low mileage.
When: 12,000 miles
Symptoms owners cite: Severe vibration when vehicle shifts from V8 to 4-cylinder mode; No warning lights
Repairs/costs cited: Dealer could not diagnose failure; not repaired.
Recalls/TSBs owners mention: Manufacturer stated failure was inherent to the vehicle.
Coolant leak between transmission and cooling lines
Coolant leak identified between transmission and cooling lines.
When: 50,000 miles
Symptoms owners cite: Coolant leak
Repairs/costs cited: Dealer diagnosed that coolant lines and hoses through transmission needed replacement.
Engine stalling and extended crank time
Engine shut off while driving at highway speed. Vehicle would not restart for approximately ten minutes.
When: Unknown; fuel tank nearly full (less than 20 gallons needed to fill)
Symptoms owners cite: Engine shut off while driving at 65 MPH; Extended crank time (approximately 10 minutes before restart)
Synthesized from 18 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
Tl* the contact owns a 2015 Chevrolet tahoe. The contact stated that there was a coolant leak between the transmission and the cooling lines. The dealer diagnosed that the coolant lines and hoses through the transmission needed to be replaced. The manufacturer was notified of the failure. The approximate failure mileage was 50,000.
Had engine trouble with your 2015 Chevrolet Tahoe?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2015 Chevrolet Tahoe?
It's a meaningful issue. 18 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Across the 11 complaints that reported odometer mileage, most engine failures cluster between 39,115 and 129,000 miles, with the median around 80,000. A quarter of owners report trouble before 39,115; a quarter make it past 129,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2015/Chevrolet/Tahoe.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.