2007 BUICK RENDEZVOUS

Typical onset: 80,000-140,000 mi

Symptoms: Coolant loss with no external leaks, needing frequent top-offs, White exhaust smoke on cold start, Milky/chocolate milk appearance in oil or oil cap, Check engine light with misfire codes, Catastrophic bearing knock if coolant contaminates oil and owner keeps driving

Fix: If caught early, it's 8-10 hours for intake gasket replacement ($800-1,200). If coolant mixed with oil and bearings are damaged, you're looking at either complete engine rebuild (25-35 hours) or used engine swap (12-16 hours). Many owners discover this too late because early symptoms are subtle.

Estimated cost: $800-1,200 (gasket only) or $4,500-7,500 (engine rebuild/replacement)

Typical onset: 90,000-150,000 mi

Symptoms: Pink or red fluid dripping from radiator area, Transmission slipping or delayed engagement after cooler leak, Strawberry milkshake appearance in coolant reservoir (coolant/ATF mixing), Transmission overheating warning or limp mode

Fix: External cooler lines rust through and leak (2 hours to replace lines, $250-400). The killer is internal radiator cooler failure allowing coolant into transmission—requires new radiator, transmission flush or rebuild, and all cooler lines. If coolant entered trans, rebuild is 12-16 hours; many techs recommend replacing rather than rebuilding a contaminated unit.

Estimated cost: $250-400 (lines only) or $2,800-4,500 (radiator + transmission contamination)

Typical onset: 70,000-120,000 mi

Symptoms: Clunking when shifting from Park to Drive or Reverse, Vibration felt through steering wheel at idle, Visible engine/trans movement when revving in Park, Harsh engagement into gear

Fix: The front transmission mount (which also supports the engine on this transverse setup) is hydraulic and fails internally. Replacement is straightforward but requires supporting the powertrain—about 2-3 hours labor. Use OEM or quality aftermarket; cheap mounts fail in 20,000 miles.

Estimated cost: $350-550

Typical onset: 100,000-160,000 mi

Symptoms: Whining or groaning noise when turning, especially when cold, Stiff or heavy steering intermittently, Power steering fluid leak from pump or high-pressure hose, Burning smell from fluid on exhaust manifold

Fix: Pump replacement is 2-3 hours; high-pressure hose (which runs near the exhaust and cooks) is another 1.5-2 hours. Often both go around the same time. Flush system when replacing pump to clear debris. This isn't catastrophic but steering gets dangerously heavy if pump seizes.

Estimated cost: $450-750

Symptoms: Clicking or ticking noise from behind dashboard, especially on startup, Heat or AC blowing from wrong vents, Temperature control not responding or stuck on one setting, Constant clicking when adjusting climate controls

Fix: Multiple actuators control airflow; the upper blend door actuator is the most common failure. Accessible from under the dash without removing it entirely—about 1.5-2 hours labor. The clicking drives owners insane but doesn't affect driveability.

Estimated cost: $250-400

Typical onset: 80,000-140,000 mi

Symptoms: ABS light illuminated with codes C0035-C0050 (wheel speed sensor range/performance), Traction control or StabiliTrak disabled warnings, ABS pump cycling erratically during normal braking, Occasional false ABS activation on dry pavement

Fix: Rear wheel speed sensors corrode where they mount to the bearing hub. Sensor replacement is simple (0.5-1 hour per side), but if ignored, can require new hub bearing assembly (2-3 hours per side). Front sensors less problematic. This is a rust-belt special.

Estimated cost: $150-250 (sensor) or $400-650 (hub bearing)