I am writing to formally file a complaint regarding a serious and ongoing issue with my vehicle that has placed my safety at risk and resulted in significant inconvenience and financial burden due to General Motors’ failure to honor my warranty in a timely manner. While driving on the highway, my vehicle suddenly began losing power and displayed flashing warning messages indicating that it would…
2023 GMC Yukon XL powertrain problems
moderate 31 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
31
Recalls
0
Avg fix
$2,500
1injury
What stands out
Owners have filed 31 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.
Among the 5 model years of GMC Yukon XL in our records for powertrain problems, this one ranks #2 by owner-complaint volume.
The failure pattern owners describe
Buyer takeaway: This 2023 GMC Yukon XL powertrain cluster shows a pattern of catastrophic engine failures (with some requiring replacement by 42,000 miles), chronic transmission valve body defects, and parts on indefinite backorder, along with instances of sudden power loss at highway speeds creating serious safety hazards. Multiple owners report warranty delays, incomplete recall fixes, and critical failures shortly after GM inspections or recalls.
Owners describe catastrophic engine failures occurring at highway speeds with no prior warning—complete power loss, inability to restart, and forced shoulder evacuation. Multiple failures happen at relatively low mileage (4,000 to 42,000 miles); some occur within months of GM recall inspections that found no issues. One owner has had the engine replaced twice in less than three years.
Transmission valve body defects cause jerking, sudden deceleration, unexpected gear shifts, and limp mode. Dealers confirm the fault but replacement parts are on indefinite backorder; vehicles sit at dealerships for weeks or months, sometimes returned to owners as "driveable" despite confirmed failures. One owner reports the transmission control module itself failed, leaving the vehicle essentially inoperable.
Fuel injector failures on different cylinders within 5,000 miles trigger carbon buildup and eventual piston ring destruction. One owner links this sequence directly to GM's known piston ring defect settlement.
A design defect prevents vehicles from shifting into neutral after engine failure, trapping them in active traffic lanes on highways. Two owners report this hazard.
Additional failures include transfer case surging with metal shavings in oil, high-pressure fuel pump housing failure flooding the engine compartment, valve lifter failures, and unexplained coolant loss despite recent dealer inspection. One owner reports brake and rotor pitting caused by months of warranty-delay downtime, only to be told it's a maintenance issue.
Same GMC Yukon XL powertrain reports on nearby years: 2021 · 2022
Failure modes owners describe
Sudden engine loss of power / complete engine failure
Engine shuts down without warning at highway speeds, often causing loss of power steering and electrical systems. Multiple owners report catastrophic engine failures requiring full engine replacement. Some failures occur after recent GM recall inspections. Owners describe complete loss of propulsion (65+ mph highway speeds), inability to restart, and coasting to shoulder.
When: 4,000 to 67,000 miles; some within first year of ownership
Symptoms owners cite: Engine shut down without warning; Complete loss of power at highway speed; Loss of power steering assist; Electronics shut down or loss of electrical power; Vehicle kicks into neutral involuntarily; Engine would not restart; No warning lights prior to failure
Codes mentioned: P0747
Repairs/costs cited: Full engine replacement under warranty (multiple owners on backorder, some waiting months for replacement engines). One owner cites extended backorder times due to widespread problem with 6.2L engine.
Recalls/TSBs owners mention: GM-issued recall for engine failure (Recall 25V274 mentioned in narrative #8); owners report recall inspections performed with no issues found, then failures occurred shortly after. Extended warranty engine replacements.
Fuel injector failure
Fuel injectors fail internally open on different cylinders within short mileage intervals, both replaced under warranty. Defective injectors cause incomplete combustion and carbon buildup on piston rings, contributing to catastrophic engine failure.
When: 10,315 miles (cylinder 2) and 14,982 miles (cylinder 7) on same vehicle
Symptoms owners cite: Engine issues requiring dealer visit; Internal injector failure (open condition)
Repairs/costs cited: Injectors replaced under warranty. Subsequent carbon decarbonization required at 30,409 miles, 38,077 miles, and 42,577 miles.
Recalls/TSBs owners mention: Warranty replacement of fuel injectors
Piston ring failure / excessive oil consumption
Piston ring failure causes excessive oil consumption and catastrophic engine destruction requiring full engine replacement. Narrative describes this as matching GM's known 5.3L/6.2L V8 piston ring defect subject to $150M class action settlement. Linked to fuel injector defects causing carbon buildup.
When: 56,028 miles (March 2026) on same vehicle with prior fuel injector failures
Symptoms owners cite: Excessive oil consumption without leaks; Loud clunking noise while driving; Engine failure requiring replacement
Repairs/costs cited: Full engine replacement required. Owner notes vehicle visited dealer 8+ times.
Recalls/TSBs owners mention: Engine replacement under warranty; subject of $150M class action settlement per owner allegation
Transmission valve body failure
Transmission valve body fails, causing jerking during acceleration, sudden deceleration, erratic shifting, limp mode, and inability to engage gears. Multiple owners report same defect. Parts are on indefinite backorder with no ETA. Issue reproduced and confirmed by dealers but repair delayed indefinitely.
When: 20,000 to 56,000 miles; defect also found in 2019-2022 models per owner report
Symptoms owners cite: Transmission jerking upon acceleration; Sudden jerk and deceleration while driving; Unexpected gear shifting; Vehicle stuck in gear or struggle shifting; Erratic drivability; Vehicle enters limp mode; Check engine light illuminates (then may disappear)
Codes mentioned: P0747
Repairs/costs cited: Transmission valve body replacement required. Part # 24065353 cited. Parts indefinitely backordered; multiple owners report waiting 2-3+ weeks or 17+ days without repair completion. One owner on backorder with no ETA. Another had vehicle returned as 'driveable' despite fault confirmed.
Recalls/TSBs owners mention: No recalls or TSBs mentioned. Dealership confirms fault but advises to keep driving unless condition worsens.
Transmission control module failure
Faulty transmission control module causes complete transmission loss. Vehicle inspected and found to have defective module; parts on indefinite backorder.
When: Mileage not stated; failure occurred during highway passing maneuver
Symptoms owners cite: Transmission went out; Engine revved up; Gas pedal did not work / no acceleration response
Repairs/costs cited: Control module requires replacement; all parts on indefinite backorder. Owner notes vehicle is essentially unusable ($60,000 vehicle with $50,000 loan).
Transfer case failure with metal shavings
Transfer case causes surging in auto mode without warning codes. Metal shavings found in oil upon removal, indicating internal wear. After repair, transmission exhibited same type of issues.
When: Mileage not stated
Symptoms owners cite: Surging when in auto mode; No codes or warning lights presented
Repairs/costs cited: Transfer case removed and oil drained; metal shavings found indicating internal damage.
High-pressure fuel pump housing failure
High-pressure fuel pump housing failed, flooding engine compartment with fuel and filling cabin with fumes. Created unsafe driving condition.
When: Mileage not stated
Symptoms owners cite: Fumes in cabin; Fuel flooding engine compartment
Repairs/costs cited: Repair took 57 days at dealership.
Engine valve lifter failure
Engine lifter failed on one side of motor, requiring replacement. Occurs in vehicle with history of other defects.
When: May 2024; vehicle purchased October 2023
Symptoms owners cite: Engine valve lifter failure
Repairs/costs cited: Lifter replaced; at 56,000 miles later, motor replaced due to broken lifter.
Transmission reaction carrier assembly failure
Transmission reaction carrier assembly failed on brand new vehicle, requiring complete transmission removal and repair on first day of ownership.
When: First day of ownership (purchased October 2023, 43,000 miles eventually accumulated on replacement)
Symptoms owners cite: Whining sound from transmission
Repairs/costs cited: Reaction carrier assembly replaced along with all other components; transmission completely removed from vehicle and repaired.
Transmission stuck in gear / unable to shift out of neutral after power loss
Vehicle cannot be shifted into neutral once engine fails, preventing manual repositioning out of traffic. Two owners report this design defect following engine failure events. Creates serious safety hazard if vehicle stops in active traffic lane.
When: Occurs immediately following engine failure
Symptoms owners cite: Unable to place vehicle into neutral after loss-of-power event; Vehicle cannot be moved out of traffic manually
Repairs/costs cited: Design issue; owners unaware of any manual or mechanical override.
Coolant loss without visible leaks
Vehicle lost all coolant despite regular maintenance and recent dealer inspection (under recall in December 2025). Found in February 2026 during loss of heat event. No visible leaks or prior warning.
When: February 2026; vehicle had recent engine recall inspection December 2025
Symptoms owners cite: Loss of heat; No coolant in system despite regular maintenance; No visible leaks
Recalls/TSBs owners mention: Recall inspection performed December 2025 with no issues reported
HVAC/defrost malfunction
HVAC/defrost concern occurred following complete engine replacement under warranty.
When: After engine replacement; timing not fully specified
Symptoms owners cite: HVAC/defrost malfunction
Inability to start vehicle
Vehicle becomes completely inoperable and will not start despite repeated attempts. Multiple owners report this. One vehicle would not start after parked at store; another would not start and is currently non-functional after 56,000 miles.
When: One incident at unspecified mileage while parked; another at 56,000 miles
Symptoms owners cite: Vehicle will not start despite repeated attempts; Engine will not turn on despite functioning electronics; Complete loss of propulsion/inability to start
Codes mentioned: Multiple error codes (one owner reports over a page of codes)
Repairs/costs cited: Diagnostic scan produced over a page of error codes but cause could not be identified by dealership.
Recalls/TSBs owners mention: Dealership stated vehicle was safe despite inability to start and diagnostic scan codes
Excessive engine oil consumption
Engine oil level drops significantly well before oil change interval with no visible leaks. Requires close monitoring to prevent engine damage.
When: Discovered during normal use; mileage not specified
Symptoms owners cite: Significant oil level drop before oil change interval; No visible leaks; No warning lights
OnStar module failure
OnStar module failed with no warranty coverage despite being part of vehicle system. Owner reports thousands of other users in OnStar community with same issue. Dealership will not assist or warranty.
When: January 2025
Symptoms owners cite: OnStar module does not work
Repairs/costs cited: Dealership will not assist or warranty repair.
Recalls/TSBs owners mention: No warranty coverage offered by dealership
Brake and rotor pitting/damage from extended downtime
Brakes and rotors became pitted and damaged due to vehicle sitting undrivable for months during warranty repair delays. GM technician explicitly advised owner this damage was expected from prolonged inactivity, but owner was then told damage is customer 'maintenance issue' rather than GM responsibility.
When: After vehicle sat on dealership lot for several months
Symptoms owners cite: Brake and rotor pitting; Brake and rotor damage
Repairs/costs cited: GM technician advised damage would occur from prolonged sitting; owner now being told it is maintenance issue.
Recalls/TSBs owners mention: Damage classified as 'maintenance issue' by GM despite technician acknowledgment it resulted from warranty delay
Synthesized from 31 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 5 most recent
Engine oil level drops significantly well before the oil change interval. Vehicle consumes excessive oil without warning lights or leaks. Risk of engine damage or failure if oil level is not closely monitored. Condition discovered during normal use.
Vehicle has 56000 miles currently and at 47000 transmission had to be replaced due to defective valve body. At 56000 miles, motor was replaced due to broken lifter. The vehicle currently will not start.
While driving the vehicles went into limp mode with a transmission issue. Vehicle was towed to the dealership where I was informed the transmission body valve has failed. Vehicle has been out of service for 3 week so far, still not fixed.
On May 23, 2025, I purchased a 2023 GMC Yukon XL VIN: [XXX] from the GMC dealership. At the time of sale, I specifically asked about the active GM engine recall. They assured me the vehicle had been inspected and was unaffected. On October 30, 2025, the engine catastrophically failed on a highway while my family — including my two small children — were in the vehicle. This created a dangerous…
Had powertrain trouble with your 2023 GMC Yukon XL?
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 GMC Yukon XL?
It's a documented issue but not catastrophic. 31 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 31 complaints filed, powertrain issues most often appear around 67,000 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/GMC/Yukon XL.
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.