I asked the dealer for information about the L87 6.2L engine rod bearing failure recall. I was told that they wouldnt perform the work until i recieved a letter from GM. This was when i got my first oil change. Then every oil change after that i asked the same question. At 43401 miles i parked the vehicle and havent driven it since. I am afraid to have something happen to me or my family. I paid…
2023 Chevrolet Tahoe powertrain problems
moderate 35 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
35
Recalls
0
Avg fix
$2,500
What stands out
Owners have filed 35 powertrain complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Powertrain accounts for 18% of all owner complaints filed against this vehicle, across 7 categories tracked.
The failure pattern owners describe
Buyer takeaway: 2023 Tahoes are experiencing widespread engine seizures and transmission valve body failures at low mileage—both capable of shutting down the vehicle at highway speeds with zero warning. Replacement parts are chronically backordered, leaving owners stranded for months while still making payments, and GM's track record on transparency and remedies is poor.
Owners report two main powertrain issues in 2023 Chevrolet Tahoes: catastrophic engine failures and transmission valve body failures—each capable of disabling the vehicle at highway speeds with no warning.
Engine failures involve sudden loss of power while driving, sometimes accompanied by seized or locked engines. Several owners describe rod bearing failures and thrown rods; one owner experienced a seizure at 3,900 miles. Owners report being stranded on interstates, unable to restart, requiring tows and complete engine replacement. Some engines fail despite having received the manufacturer's recommended thicker oil service. Parts remain on backorder for months, leaving owners without transportation while making loan payments.
Transmission valve body failures are widespread. Owners describe the vehicle entering "limp mode," downshifting without command, refusing to shift out of specific gears, reducing speed to 5–55 mph, or shutting off entirely. The check engine light illuminates (often with code P0747, pressure control solenoid stuck). Multiple owners report transmission failure between 15,000 and 76,000 miles. Rear wheel lockup has occurred during these events. Like engine repairs, valve body replacements are on national backorder indefinitely—dealers have reported no ETAs for months.
Both failures create immediate highway hazards: loss of braking response, inability to control lane position, and stranded vehicles blocking traffic. Owners report no advance warning lights before total failure. Multiple owners cite GM's awareness of these issues and frustration with the manufacturer's handling of parts availability and warranty coverage.
Same Chevrolet Tahoe powertrain reports on nearby years: 2021 · 2022
Failure modes owners describe
Engine Rod Bearing Failure / Seized Engine
Engine suddenly loses power while driving, seizures occur, rods are thrown or bearings fail with metal fragments in oil. Vehicle cannot be restarted and requires complete engine replacement.
When: Reported at 3,900 miles, 10,000 miles, 13,260 miles, and higher mileages; failures occur without prior warning indicators in some cases
Symptoms owners cite: Engine stops abruptly while driving; Vehicle loses all power; Gas pedal becomes unresponsive; Engine will not restart; Seized or locked engine; Abnormal engine noises before failure
Codes mentioned: Engine seizure confirmed by dealership inspection
Repairs/costs cited: Full engine replacement required; parts on backorder for months. One owner paid for thicker oil service per GM recommendation but engine still failed.
Recalls/TSBs owners mention: Thicker (higher viscosity) oil recommended as fix for rod bearing wear; owners report this is insufficient. GM aware of 6.2L engine issues but no comprehensive recall remedy provided; only oil viscosity upgrade and inspection offered on some models.
Transmission Valve Body Failure
Transmission valve body fails, causing limp mode, unexpected downshifts, inability to shift gears, loss of acceleration, and sometimes engine shutdown. Vehicle is restricted to low speeds (5–55 mph) or unable to accelerate above certain RPM.
When: Reported between 15,000 and 76,000 miles; one case at 17,000 miles, another at 28,000, 30,000, 35,000 miles; problem occurs while driving at highway speeds on multiple occasions
Symptoms owners cite: Vehicle enters limp mode with reduced speed; Unexpected downshifting; Transmission will not shift into higher gears; Jerking and shuddering on downshift; Check engine light illuminated (often P0747); Inability to accelerate past 1.5–5 mph; Transmission slipping at low speeds; Rear wheel lockup during transmission malfunction
Codes mentioned: P0747 (pressure control solenoid A stuck on), Check engine light
Repairs/costs cited: Valve body replacement required; parts on national backorder for months with no ETA. One owner reports valve body replaced, then re-failure one week later requiring torque converter replacement and another valve body replacement—continued shuddering and hard shifting persisted. Dealers permitted continued driving despite known defect.
Recalls/TSBs owners mention: GM aware of valve body defect; extends to 2022 models. Fix involves transmission reprogramming and fluid replacement (some dealers list as 'maintenance' despite exceeding normal maintenance interval). Third-party sources report aftermarket valve body upgrades but GM does not disclose details of its own upgrades. Owners report GM has not issued comprehensive recall or provided warranty extension for delays.
Transmission Electrical/Control System Malfunction
Vehicle experiences sudden loss of electrical power or control, transmission shifts to neutral unexpectedly while driving, dashboard screen goes blank, hazard lights fail to function properly, and vehicle cannot be shifted out of park or into neutral.
When: At highway speeds (65+ mph); one case at 11,000 miles; multiple occurrences on same vehicle within short timeframe
Symptoms owners cite: Vehicle shifts into neutral without driver input; Air conditioning shuts off; Dashboard screen goes blank; Electrical system shuts off and reboots repeatedly; Hazard lights turn off intermittently; Vehicle locked in park with no ability to shift to neutral; Accelerator unresponsive
Repairs/costs cited: Underlying cause unclear from narratives; vehicle remains at dealership unrepaired in at least one case. One owner reports vehicle towed and stuck in park requiring towing away from roadway.
Oil Consumption / Low Oil Level
Engine oil level drops abnormally between service intervals, requiring frequent top-ups. One owner reported 3 quarts low at 5,000 miles after last oil change; another reported consistent low readings despite dealership claiming this is 'normal' for GM.
When: At low mileage (under 40,000 miles)
Symptoms owners cite: Low oil warning light illuminates; Oil level drops 1–3 quarts between services; Dealership states this is normal but recommends frequent checks
Repairs/costs cited: Dealership recommends checking oil every 2,000 miles; owner reports no fix offered and dealership states 'GM policy' prevents intervention.
Recalls/TSBs owners mention: Dealership states abnormal oil consumption is 'normal' per GM policy but provides no remedy.
Alternator Failure
Alternator fails, requiring replacement and causing secondary battery failure.
When: At 50,000 miles
Symptoms owners cite: Alternator fails; Battery requires replacement
Repairs/costs cited: Alternator and battery replacement performed.
Fuel Injector Malfunction
Vehicle shakes after refueling, dashboard warnings for service ESC, traction control, and forward collision system appear. Check engine light illuminates. Vehicle unable to maintain steady speed and cruise control disabled. Later diagnosed as fuel injector #1 issue.
When: First incident after refueling; recurred one week later
Symptoms owners cite: Vehicle shakes after refueling; Service ESC warning; Service traction control warning; Forward collision system unavailable; Cruise control disabled; Check engine light flashing; Inability to maintain steady speed (must hold accelerator at angle)
Codes mentioned: Check engine light
Repairs/costs cited: Fuel injector #1 replacement recommended by dealership.
Recalls/TSBs owners mention: Dealership initially attributed to low battery; once battery replaced, claimed 'no codes' and symptom was 'a fluke.' Issue recurred one week later and was finally diagnosed as fuel injector problem.
Synthesized from 35 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
While driving this rental vehicle in traffic it shutdown and came to an abrupt halt. All lights on the dash were flashing, emergency hazard lights would not turn on. Attempted to restart vehicle with no result. After 2 minutes vehicle dash lights went off and hazard lights were able to be turned on. Vehicle then restarted. While pulling vehicle off the road, brakes were not responsive.
2nd Powertrain failure in 4 months in 2023 Tahoe with 6.2L engine. The first being the Camshaft and lifters failing at highway speeds, which was repaired. The second issue the engine seized while on a tollway going approx 70 MPH with my spouse, children, and family in the vehicle. We were able to coast to the shoulder while waiting on a tow truck. Because of the engine being seized, the Tahoe is…
Had powertrain trouble with your 2023 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 powertrain problem on the 2023 Chevrolet Tahoe?
It's a documented issue but not catastrophic. 35 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Based on the 35 complaints filed, powertrain issues most often appear around 38,000 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain 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 powertrain?
No active recalls currently cover powertrain 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/2023/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.