After just getting our vehicle back on 12/11/25 from our incident on 11/9/25 when my wife was driving at 70 MPH on the highway when the engine blew the first time. Approximately 1300 miles later and 15 days after we picked up the vehicle when I was merging onto the highway the vehicle had a sudden power loss and a smell that filled the cabin. We were able to drive to the next exit and while the…
2023 Chevrolet Suburban engine problems
moderate 51 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
51
Recalls
0
Avg fix
$3,100
When does it fail?
Of the 51 engine complaints filed for the 2023 Chevrolet Suburban, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 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
Engine accounts for 50% of every owner complaint on file for this vehicle — the dominant problem area across 6 categories tracked.
Owners have filed 51 engine 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.
The failure pattern owners describe
Buyer takeaway: 2023 Chevrolet Suburbans have widespread engine failure reports occurring without warning at 14,000 to 100,000 miles, often requiring complete engine replacement with parts on extended backorder. Multiple owners experienced sudden power loss at highway speed, creating serious safety hazards; lifter failures, coolant valve issues, and cooling system problems compound reliability concerns on a vehicle intended for long-term family use.
The 2023 Suburban engine complaints break down into distinct patterns. The most serious: complete catastrophic failure—engine seizing solid, often at highway speed, with zero warning lights beforehand. Owners describe sudden shutdown, no restart capability, smoke from the engine bay, metal debris found inside the block, and in at least one case a spun rear main bearing. These aren't slow degradations; they're abrupt losses of power that forced drivers off freeways into dangerous positions. Replacement engines are nationwide on backorder; multiple owners report 30+ day waits with no timeline from GM.
Lifter collapse in the 5.3L engine shows a pattern of repeat failure—one owner's lifters failed at 41k miles (warranty fixed), then again at 100k miles on the replacement engine. Owners cite GM technical service bulletin PIP5776H acknowledging the issue on 2021–2023 vehicles but offering no permanent solution.
Coolant control valve failures trigger check engine lights and "Acceleration Reduced" warnings starting around 57,000 miles. GM reclassified these from powertrain warranty to emissions warranty in February 2025, shortening coverage. These valves sit on national backorder, stranding owners.
One owner reported radiator rupture at 14,000 miles on a brand-new vehicle—the dealership called it a "poorly manufactured part"—with oil and coolant mixing inside without triggering any warning light. That vehicle needed cooling system work ongoing for over a year with no permanent fix.
Other failures included transmission control loss during engine stall events, engine stalls that reoccur unpredictably, and module communication loss causing phantom braking.
Same Chevrolet Suburban engine reports on nearby years: 2021 · 2022 · 2024
Failure modes owners describe
Catastrophic engine failure / seizure
Complete loss of engine power while driving, often at highway speed, with no warning lights or diagnostic messages preceding failure. Owners report sudden shutdown, inability to restart, loss of all power, and smoke/burning odors from engine compartment. Diagnosis includes catastrophic failure, seized engine, metal debris in engine block, spun rear main bearing, and cracked engine block. Engines deemed non-salvageable, requiring complete replacement.
When: As low as 14,000 miles; most commonly between 30,000–62,000 miles
Symptoms owners cite: Sudden loss of power at highway speed; Vehicle shutdown without warning; Loud noise or loud clanking/rattling before failure; Smoke and strong burning odor from engine compartment; Loss of all power / complete inability to restart; Engine seized or will not turn over
Codes mentioned: U0101, U0131, U0146, U152B, U160F, U1561
Repairs/costs cited: Complete engine replacement required. Multiple owners report engines on nationwide backorder, some waiting 30+ days with no estimated availability. One owner cited replacement cost of approximately $6,830 out of pocket after warranty expiration at 60,000 miles.
Recalls/TSBs owners mention: Recall NHTSA Campaign 25V274000 (Engine and Engine Cooling) issued; however, replacement parts unavailable. GM service bulletin PIP5776H issued for lifter collapse but no permanent fix provided. One owner mentions recall under warranty coverage; others report GM has not provided assistance or timeline. Special Coverage Program N252508341 referenced in one complaint.
Lifter failure / AFM/DFM lifter collapse
Valve train component failure resulting in engine misfire, noise, and performance loss. Owners report collapsed AFM (Active Fuel Management) / DFM (Dynamic Fuel Management) lifters diagnosed at dealerships. One owner experienced lifter failure twice within 20,000 miles on same vehicle; another experienced failure at 41k miles and again at 100k miles on replacement engine.
When: First occurrence as early as 41,000 miles; second failures occurring on replacement engines
Symptoms owners cite: Engine belt-like noise or tapping/ticking sound; Misfire in specific cylinder; Check engine light illuminated; Power loss or reduced acceleration; Shaking or vibration
Codes mentioned: P0300, Cylinder #3 misfire
Repairs/costs cited: Lifter replacement performed under warranty on first occurrence; owners report concern about repeat failures on replacement engines. One owner reports entire fuel injector replacement recommended ($2,900 labor).
Recalls/TSBs owners mention: GM technical service bulletin PIP5776H addresses lifter collapse on 2021–2023 vehicles with 5.3L L84 engine; no permanent fix provided. Repairs covered under powertrain warranty (5 years/60,000 miles).
Coolant control valve failure
Cooling system control valve malfunction resulting in check engine light and reduced power warning messages. Multiple owners report failed coolant control valve diagnosed at dealership. One owner notes that as of February 2025, GM reclassified these valves from powertrain warranty coverage to emissions warranty (shorter coverage period).
When: As low as 57,000 miles; at least one failure reported at 104,849 miles
Symptoms owners cite: Check engine light illuminated; Coolant Control Valve warning message; Acceleration Reduced – Stop Vehicle message; Strong coolant smell from vents
Codes mentioned: P1098
Repairs/costs cited: Valve replacement required. Owners report valves on national backorder causing long lead times. One owner notes ongoing cooling system issues since April 2024, with vehicle in shop 2 separate times for 9 weeks total.
Recalls/TSBs owners mention: As of February 2025, GM moved coolant control valve coverage from powertrain warranty to emissions warranty, reducing coverage duration. Special Coverage Program N252508341 referenced. Owners report difficulty obtaining parts and limited assistance from GM.
Engine overheating / radiator rupture
Cooling system failure causing radiator rupture and loss of coolant. One owner reports brand-new 2023 Suburban suffered radiator rupture at 14,000 miles. Dealership described radiator as 'poorly manufactured part.' Oil and coolant mixing occurred without warning light triggering.
When: 14,000 miles
Symptoms owners cite: Radiator rupture; Oil dripping from undercarriage; Strong coolant smell; Oil and coolant mixture in coolant reservoir
Repairs/costs cited: Radiator, hoses replaced April 2024. Ongoing service visits for 1+ year with repeated coolant flushing and additional hose replacement. No permanent resolution reported.
Recalls/TSBs owners mention: Dealership acknowledged 'poorly manufactured part' but no formal recall or technical service bulletin mentioned. No warning light issued despite mixing of oil and coolant.
Engine stall / sudden shutdown (no complete failure)
Engine shuts down without warning while driving at various speeds, but vehicle restarts after brief interval. Distinct from catastrophic failure in that vehicle does restart and continues operation, but creates serious safety risk on highway. Multiple owners report phenomenon occurring repeatedly.
When: Between 20,000 and 65,000 miles
Symptoms owners cite: Sudden engine shutdown while driving; No warning lights prior to stall; Check engine light may appear after restart; Vehicle restarts after brief pause; Can reoccur during same trip or at later time
Codes mentioned: P0300
Repairs/costs cited: Dealers unable to reproduce or diagnose failure. No repairs completed in reported cases.
Recalls/TSBs owners mention: No documented response. One owner states manufacturer not yet contacted; others report dealer unable to assist.
Transmission / drivetrain control loss during engine failure
During engine stall or failure, transmission shifts involuntarily (into Neutral or Park) and becomes stuck or unresponsive, preventing normal shifting and creating dangerous situations where vehicle cannot be safely towed or maneuvered.
When: Concurrent with engine failure events
Symptoms owners cite: Transmission shifts into Neutral or Park automatically; Vehicle locked in Park or Neutral, unable to shift; Inability to place vehicle in Neutral for towing; Loss of steering or brake power assistance possible
Repairs/costs cited: Multiple owners describe extreme difficulty getting vehicle into Neutral for towing. One owner reports 'terrifying' experience trying to place on tow truck.
Recalls/TSBs owners mention: No documented response addressing transmission control integration with engine failure.
Engine misfire / fuel injector issues
Single or multiple fuel injector failures causing engine misfire, stumbling, and rough running. One owner reports misfire in cylinder #3; another reports all 8 fuel injectors recommended for replacement at 54,000 miles.
When: 54,000 miles and above
Symptoms owners cite: Engine misfire in specific cylinder; Rough idle or stumbling during acceleration; Check engine light illuminated; Loss of power
Codes mentioned: P0300
Repairs/costs cited: Single injector replacement attempted but did not resolve issue; full tune-up / all 8 injectors replacement recommended ($2,900 labor cited).
Recalls/TSBs owners mention: No documented response.
Loss of communication / module failure
Complete loss of vehicle control module communication resulting in phantom braking, non-functional wipers, and inability to accelerate. Dealer diagnostic revealed communication loss across multiple control modules.
When: 15,000 miles
Symptoms owners cite: Phantom braking at highway speed; Windshield wipers inoperative; Loss of communication with multiple modules; No warning light at onset
Codes mentioned: U0101, U0131, U0146, U152B, U160F, U1561
Repairs/costs cited: Vehicle not repaired in this case.
Recalls/TSBs owners mention: Manufacturer contacted but no assistance provided.
Synthesized from 51 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 6 most recent
My 2023 Chevrolet Suburban High Country (VIN: [XXX] ) suffered a sudden and dangerous engine failure while my wife was driving 70 mph on the interstate returning from our child’s sled hockey tournament in Ohio. The vehicle gave no warning lights, alerts, or diagnostic messages before the failure. While driving in the right lane, the vehicle began losing power and making a loud noise. My wife…
My 2023 Chevrolet Suburban with the 5.3L V8 engine has experienced lifter failure twice within less than [20,000 miles]. Both times the vehicle developed a misfire, engine belt like noise and was diagnosed by the Chevrolet dealership as having collapsed AFM/DFM lifters. All oil changes have been done at the dealership using GM-approved oil. The issue appears to be a known problem on 2021–2023 GM…
The contact owns a 2023 Chevrolet Suburban. The contact stated that while driving at 10 MPH, there was an abnormal rumbling sound coming from the engine, with the check engine and traction control warning lights illuminated. Due to the failure, the contact restarted the vehicle and drove to an independent mechanic. The mechanic performed a diagnostic test on the vehicle and discovered a misfire…
The contact owns a 2023 Chevrolet Suburban. The contact stated while driving at an undisclosed speed, the vehicle experienced phantom braking. Additionally, the windshield wipers were inoperable. On another occasion, while driving at approximately 70 MPH, the vehicle experienced phantom braking. There was no warning light illuminated. The vehicle was taken to the local dealer, where it was…
The contact owns a 2023 Chevrolet Suburban. The contact stated that while driving approximately 30 MPH, the vehicle suddenly shut off without warning. After restarting the vehicle, the vehicle operated normally. The contact stated that the failure had occurred on several occasions. The vehicle was taken to the local dealer, who was unable to determine the cause of the failure. The vehicle was…
Had engine trouble with your 2023 Chevrolet Suburban?
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 2023 Chevrolet Suburban?
It's a documented issue but not catastrophic. 51 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Across the 10 complaints that reported odometer mileage, most engine failures cluster between 30,000 and 100,000 miles, with the median around 52,000. A quarter of owners report trouble before 30,000; a quarter make it past 100,000. 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/2023/Chevrolet/Suburban.
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.