Tl* the contact owns a 2011 GMC acadia. While driving various speeds, the vehicle stalled and several warning indicators illuminated on the instrument panel. After pulling over and attempting to restart the vehicle, the vehicle restarted on the initial attempt. The failure occurred intermittently on several occasions. The vehicle was not diagnosed or repaired. The manufacturer was notified of the…
2011 GMC Acadia engine problems
severe 25 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
25
Recalls
0
Avg fix
$3,100
1fire
1injury
When does it fail?
Of the 25 engine complaints filed for the 2011 GMC Acadia, 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
Owners have filed 25 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.
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.
The failure pattern owners describe
Buyer takeaway: The 2011 GMC Acadia's engine has serious durability problems, primarily premature timing chain failure and cylinder head defects causing expensive engine replacement at relatively low mileage (77k–140k miles). Owners also report dangerous stalling, limp-mode power loss, and overheating; GM has not issued recalls despite known TSBs and widespread complaints.
The 2011 Acadia's engine is a minefield of defects that hit owners hard financially and sometimes put them in danger. The biggest culprit is premature timing chain failure. Owners describe it starting with a loud ticking or knocking from the engine—sometimes progressing to complete seizure—typically between 77,000 and 138,000 miles. When it goes, you're looking at $4,000 to $10,000 for a replacement engine with labor; some owners got away with just chain work for around $1,600, but that's rare. GM has TSBs on record acknowledging a manufacturing defect in the cylinder head on all vehicles with this engine, yet no recall covers the 2011.
The cylinder head itself is defective—oil intrudes into spark plug tubes, causing misfires and hard starting. Owners report visiting dealers three or four times with the same complaint and no permanent fix, especially when the check engine light doesn't illuminate.
Beyond internal engine failure, owners report dangerous stalling—the engine simply shuts off mid-drive, sometimes triggered by turning or highway merging. One owner's Acadia dropped to 20 mph on the interstate and nearly got rear-ended. Another stalled on a low-speed turn and later learned the ECM had failed. A few reported severe acceleration delay or limp mode, where the gas pedal feels useless. One owner merged onto a 70-mph expressway and couldn't exceed 35 mph.
Coolant leaks from a defective water pump seal showed up at 38,000 miles in one case. There's also one report of an engine fire at 125,000 miles with no warning.
Same GMC Acadia engine reports on nearby years: 2008 · 2009 · 2010 · 2012 · 2014
Failure modes owners describe
Timing Chain Failure
The timing chain and tensioner stretch or fail prematurely, leading to catastrophic engine damage. Owners report severe symptoms including loud ticking, knocking, and grinding noises; in multiple cases the engine seized completely and required replacement.
When: 77,000 to 138,000 miles; some reports at lower mileage with diagnostic codes present from purchase
Symptoms owners cite: Loud ticking or knocking sound from engine; Engine misfire in multiple cylinders; Check engine light with timing-related codes; Sudden complete engine failure mid-drive; Loss of power and inability to accelerate
Codes mentioned: P0008, P0017, P0332
Repairs/costs cited: Full engine replacement reported at costs ranging from $4,000 to $10,000 (used motor with parts and labor). Some owners replaced just timing chains and related components for $1,636. Requires new engine in most catastrophic cases.
Recalls/TSBs owners mention: Multiple TSBs identified for cylinder head defects related to timing chain; noted to affect all VINs using this engine. Earlier recalls on 2007-2009 vehicles; 2011 model apparently not included in recall scope despite same engine design.
Cylinder Head Defect (Oil Intrusion)
Oil leaks into spark plug tubes and timing chain area from a defective cylinder head, causing misfires and progressive engine degradation. This appears linked to manufacturing defect affecting all vehicles with this engine.
When: Variable onset; reported at 10,000 to 95,000 miles
Symptoms owners cite: Oil in spark plug tubes (visible during inspection); Check engine light with misfire codes; Engine shake and vibration while driving; Hard starting or stalling; Cylinder head failure preventing engine restart
Codes mentioned: P0017, P0332, P0008, P0161
Repairs/costs cited: Requires spark plug tube cleaning, plug and coil replacement; in severe cases cylinder head replacement or full engine replacement. Owners report repeated visits to dealership with no permanent fix when check engine light does not illuminate.
Recalls/TSBs owners mention: Multiple TSBs exist documenting manufacturing defect in cylinder head affecting all VINs with this engine. No recall issued.
Engine Stalling and Loss of Power
Engine suddenly stalls or loses power during normal driving, sometimes triggered by specific maneuvers like turning or merging. Engine Control Module (ECM) or sensor issues reported; one owner had ECM repaired at dealer.
When: Occurs at various stages during ownership; reported at 10,000 miles early in ownership to later stages
Symptoms owners cite: Sudden complete engine shutdown while driving; Inability to accelerate after initial power loss; Vehicle drops to 20–35 mph despite driver input; Check engine light illuminates after stall; Engine restarts normally after shutdown and restart cycle
Codes mentioned: Engine power reduced message (limp mode)
Repairs/costs cited: Dealer replaced ECM in at least one case. Some instances clear after vehicle restart. No parts costs specified by owners in these incidents.
Recalls/TSBs owners mention: One owner reported dealer stated ECM repair completed. Manufacturer notified in several cases; vehicle was not repaired pending diagnosis or decision.
Acceleration Delay and Limp Mode
Throttle response becomes sluggish or vehicle enters limp mode, cutting acceleration to unsafe levels during highway merging. Multiple occurrences in same drive reported; linked to traction control and engine power reduction messages.
When: Intermittent over weeks to months; one owner reported three separate incidents on same day
Symptoms owners cite: Severe delay between throttle input and acceleration; Vehicle stuck at 20–35 mph unable to speed up; Dashboard messages: 'SERVICE TRACTION CONTROL,' 'TRACTION CONTROL OFF,' 'ENGINE POWER IS REDUCED'; Engine sounds strained but does not respond; Normal power returns after vehicle restart
Repairs/costs cited: Dealer stated problem would be 'like finding a needle in a haystack' and did not pursue repair despite owner request. No repair parts or costs specified.
Engine Misfire and Shake
Engine misfires intermittently during normal driving, especially uphill, causing severe shaking and vibration. Fuel system cleaning and spark plug replacement attempted without resolution; dealership unable to diagnose without check engine light.
When: Intermittent; occurs at various speeds and road conditions
Symptoms owners cite: Engine miss at 30–60 mph, especially uphill; Severe shaking and vibration; Skipping or jumping sensation while accelerating; No check engine light present despite symptoms
Repairs/costs cited: Fuel system cleaning performed; spark plugs and plug coils replaced. Costs described as expensive and not covered by extended warranty. Dealership unable to definitively diagnose without check engine light.
Engine Overheating and Coolant Leak
Water pump seal defect causes rapid coolant loss and engine overheating. Occurred at very low mileage in at least one case, despite normal maintenance.
When: Reported at 38,000 miles
Symptoms owners cite: Temperature gauge exceeding 240 degrees; Water pouring from front of engine; Coolant leak around water pump seal; Continuing leakage after dealer repair
Repairs/costs cited: Water pump replacement performed by dealer at 38,000 miles; owner charged despite warranty not covering defect according to owner's understanding.
Recalls/TSBs owners mention: Related to NHTSA ID 10052213 & PB-13079; previous fix did not stop coolant leakage, indicating design issue.
Engine Fire
Front of vehicle caught fire while merging onto interstate. Vehicle was destroyed; no pre-incident warning noted.
When: 125,000 miles
Symptoms owners cite: Fire started in front of engine compartment; Complete front of vehicle destroyed; Sudden onset with no warning lights or sounds reported
Repairs/costs cited: Vehicle destroyed; owner transported to emergency room for evaluation. Insurance company did not total vehicle due to liability-only coverage.
Synthesized from 25 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
I have had this 2011 arcadia for less then a month. The dealer I bought it from assured me that the only issue it had was it needed a new a/c condenser. ( permanent codes, p0008, p0332, p0017 ) (pending codes p0161, p0332, p0017 ) ( stored codes, p0332, p0008 ) severe urgency replace timing chains and related components, t chain x1 t chain x1 t chain x2 timing tensioner x1 x1 x1 x1. I havent…
Had engine trouble with your 2011 GMC Acadia?
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 2011 GMC Acadia?
It's a meaningful issue. 25 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 20 complaints that reported odometer mileage, most engine failures cluster between 38,250 and 116,000 miles, with the median around 82,899. A quarter of owners report trouble before 38,250; a quarter make it past 116,000. 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/2011/GMC/Acadia.
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.