2012 BUICK ENCLAVE

Typical onset: 80,000-120,000 mi

Symptoms: Cold-start rattle lasting 5-15 seconds, Check engine light with P0008/P0011 timing codes, Sudden loss of power or complete engine failure, Metal shavings in oil, Rough idle after warm-up

Fix: Early catch: timing chain set replacement runs 12-16 hours labor. Late catch means complete engine rebuild or replacement because stretched chain grenades guides into oil system, starving bearings and scoring cylinder walls. Short block or used engine swap is typical. 18-28 hours labor for engine replacement.

Estimated cost: $3,500-9,500

Typical onset: 70,000-110,000 mi

Symptoms: Transmission fluid leaking near radiator, Pink fluid pooling under vehicle, Transmission overheating warnings, Harsh shifting or slipping, Coolant in transmission pan (cross-contamination)

Fix: Steel cooler lines rust through where they connect at the radiator. If caught early, replace lines only (3-4 hours). If coolant mixes with ATF, you're rebuilding or replacing the 6T75 transmission. Flush cooling system and trans if any cross-contamination suspected. 4-6 hours for lines and flush, 16-22 hours for transmission replacement.

Estimated cost: $800-5,800

Typical onset: 60,000-100,000 mi

Symptoms: Liftgate falls instead of staying open, Loud pop when opening liftgate, Visible cracks in liftgate hinge area, Liftgate misalignment, Paint cracking near hinge mounts on body

Fix: Struts fail first, but the real problem is stress cracks forming in the stamped steel hinge mounts on the body. Strut replacement is 1 hour. Hinge weld repair requires removing inner trim panels and reinforcing/rewelding mounts, 4-6 hours. Some shops won't touch the weld job, send to body shop.

Estimated cost: $150-1,200

Typical onset: 60,000-90,000 mi

Symptoms: Coolant leak from front of engine, Overheating with no external leaks visible, Squealing or grinding noise from front of engine, Coolant smell in cabin, Steam from hood

Fix: GM embedded the water pump inside the timing cover on this engine. Requires removing front cover, timing chains, and associated components. Always replace timing chains and guides while you're in there since labor overlaps 90%. 10-14 hours total.

Estimated cost: $2,200-3,800

Typical onset: 80,000-130,000 mi

Symptoms: Wipers move in short jerky strokes, One wiper works, other doesn't move, Wipers stuck in mid-position, Clicking noise from base of windshield, Wipers out of sync with each other

Fix: Plastic bushings in the linkage wear out, especially in cold climates. Remove cowl panel and replace entire linkage assembly. Aftermarket kits with metal bushings available. 2-3 hours labor.

Estimated cost: $350-650

Typical onset: 70,000-120,000 mi

Symptoms: Power steering fluid puddles under front of vehicle, Whining noise when turning, Heavy steering at low speeds, Burning smell from engine bay, Low fluid warnings

Fix: High-pressure hose from pump to rack develops leaks at crimp points. Return hose also prone to deterioration. Replace both while you're in there. 2-3 hours labor, flush and bleed system.

Estimated cost: $450-750

Typical onset: 90,000-140,000 mi

Symptoms: Squealing noise from front of engine, AC intermittently works, Grinding sound when AC is on, Clutch won't engage, Serpentine belt shredding

Fix: Clutch bearing seizes, sometimes welding the clutch together and forcing compressor to run constantly. Can grenade and take out serpentine belt, leaving you stranded. Compressor replacement with flush and evacuate/recharge. 3-4 hours labor.

Estimated cost: $900-1,400