2010 Buick Enclave engine problems

The timing chain stretches prematurely or shows excessive wear, causing the engine control module to detect irregular valve timing. Owners report intermittent loss of acceleration response, rough idle, power loss during highway driving, and engine stalling. In severe cases, the stretched chain allows valve timing to drift so far that pistons strike valves, causing catastrophic internal damage.

When: 50,000–144,000 miles; one failure at 45,085 miles, multiple at 80,000–90,000 miles

Symptoms owners cite: Check engine light illuminated; Hesitation during acceleration or when merging onto highways; Loss of power at highway speeds (vehicle dropping from 70 mph to 35 mph); Engine stalling without warning while driving or at idle; Rough running or rattling noise from engine; Inability to restart after stalling; Intermittent power loss requiring release and re-depression of accelerator to restore function

Codes mentioned: P0008 (Camshaft Position Timing Over-Advanced Bank 1), P0009 (Camshaft Position Timing Over-Advanced Bank 2), P0017 (Crankshaft/Camshaft Timing Misalignment)

Repairs/costs cited: Timing chain replacement, camshaft replacement, valve cover gaskets, timing cover gasket, intake manifold gasket, intake/exhaust actuators, catalytic converter. Costs range $2,000–$4,800 depending on collateral damage. One owner paid $3,536.80 at ~49,000 miles and $5,000+ at ~59,000 miles. Another reported $4,000 in August 2017 at 87k miles, then $400–500 repair in January 2020 at 120k miles. Dealers often quote $3,000 before inspecting for secondary damage.

Recalls/TSBs owners mention: GM issued Technical Service Bulletin SB-10052863-6133 (covering 2007–2012 Enclaves and siblings) and Special Coverage Adjustment #11340C (limited to 2007–2009 model years). GM released Customer Satisfaction Program 10287 in 2011 with limited scope. Despite identical engine design and components, 2010 models are excluded from extended powertrain warranty and special coverage. Owners report GM stating the problem is 'fixed' for 2010 but providing no assistance. One owner was told the VIN was not included in recall. Dealer responses range from reluctant partial reimbursement to refusal of any assistance.

When the stretched timing chain finally breaks or slips severely, it can cause pistons to strike valves, destroying the cylinder head, valves, camshaft, and bearings. In some cases, rapid oil loss from a failed pump or drain system causes engine seizure. Owners report loud knocking, white smoke from exhaust, loss of all power, and inability to restart. The engine is then unserviceable and requires full replacement or rebuild.

When: 45,085 miles to 143,000 miles; cluster of failures around 80,000–90,000 miles

Symptoms owners cite: Loud knocking or ticking noise from engine; White or heavy smoke from exhaust; Complete loss of engine power; Engine will not restart or turn over; Fist-sized hole in engine block (observed in one case); Engine fire in at least one case; Metal shavings found in engine oil (indicating internal wear)

Codes mentioned: P0008 (preceding catastrophic failure), Check engine light (preceding failure)

Repairs/costs cited: Complete engine replacement required ($3,500–$10,000 cost cited). One owner faced $10,000 repair after timing chain jumped and locked up the motor. Another spent over $4,800 for engine replacement after seizure. Reconditioned engines now come with upgraded GM-spec timing chain per one dealer. One vehicle totaled due to engine fire.

Recalls/TSBs owners mention: No recalls issued for 2010 model year. GM acknowledges the problem exists but has offered no campaign or extended coverage for 2010 Enclaves. Dealers have stated 'nothing can be done' or refused assistance. One owner received only a partial discount on repair costs.

The engine enters a reduced-power or 'limp mode' state, restricting acceleration and sometimes causing the vehicle to shed speed suddenly on the highway. Check engine light illuminates. Traction control warning may also activate. The issue is intermittent and recurs on multiple driving occasions, suggesting a progressive wear condition.

When: Multiple owners report intermittent episodes over weeks or months; one owner reported it happening 'a couple times a week' over several months at 110,000 miles

Symptoms owners cite: Hesitation when depressing accelerator pedal; Vehicle will not accelerate to merge or overtake; Power reduction warning on dash; Traction control warning indicator illuminated; Door locks clicking back and forth repeatedly; Complete power loss at highway speed, dropping from 70 mph to 35 mph in 70 mph zone

Codes mentioned: P0008, Traction control code (in some cases)

Repairs/costs cited: Timing chain replacement; if vehicle has been driven in limp mode, secondary damage (valves, camshaft, cylinder head) may also require repair. Cost $2,000–$5,000+.

Recalls/TSBs owners mention: Initial visits to independent mechanics or dealers often yielded no diagnostic codes or findings. Once check engine light appeared, diagnosis confirmed timing chain stretch. GM has not issued recalls or extended coverage for 2010 models despite the identical failure pattern.

One owner reported that the oil pump drains oil out of the engine rapidly, causing the engine to seize. The narrative states an oil change was performed a month before the failure, yet oil was still lost and the engine seized.

When: Occurred shortly after routine oil change; owner had just purchased vehicle used less than a year prior

Symptoms owners cite: Engine seizure without warning; Engine will not restart after stalling; Vehicle requires towing

Repairs/costs cited: Full engine replacement required; cost over $4,800.

Recalls/TSBs owners mention: Owner called GM and asked why 2010 is not recalled alongside 2008–2009 models. GM acknowledged the problem but stated 'there is no future date if or when the 2010 Buick Enclave would be recalled for the engine-oil failure.'

One owner reported melting of an air conditioner hose where it contacts another hose due to excessive heat. Similar issues noted on Acadia and Traverse models, but only Yukon models have been recalled for this issue per owner's contact with Buick.

When: <UNKNOWN>

Symptoms owners cite: AC hose melted where it contacts another hose

Repairs/costs cited: Replacement AC hose part costs $861.

Recalls/TSBs owners mention: Only Yukon models have been recalled for this issue; Enclave, Acadia, and Traverse have not despite sharing the same engine and plumbing design.

One owner reported that their 2010 Buick Enclave with only 12,500 miles experienced an engine fire that engulfed the entire engine compartment, totaling the vehicle. The vehicle was well maintained with up-to-date service records.

When: 12,500 miles (February 22, 2011)

Symptoms owners cite: Engine fire; Engine compartment engulfed in flames; Vehicle totaled

Repairs/costs cited: Vehicle totaled; no repair attempted.

Recalls/TSBs owners mention: Nationwide Insurance hired an investigator to determine root cause; outcome not stated in narrative.