2004 BUICK RENDEZVOUS

Typical onset: 60,000-100,000 mi

Symptoms: External coolant leaks at front/rear of engine, White smoke from exhaust on cold start, Coolant loss with no visible external puddle, Rough idle or misfire from coolant entering cylinders

Fix: Replace upper and lower intake gaskets, typically 6-8 hours labor. Often discover warped intake plenum requiring machining or replacement. Smart techs do coolant elbows and thermostat housing at same time since they're plastic and accessible. Dexcool system must be flushed.

Estimated cost: $800-1,400

Typical onset: 80,000-130,000 mi

Symptoms: Transmission fluid dripping near radiator, Pink fluid on ground under front of vehicle, Burned transmission smell, Slipping gears or delayed engagement from low fluid

Fix: Steel cooler lines rust through where they connect to radiator or transmission. Quick-fix is splice-in rubber hose section (1 hour), but proper repair replaces entire hard line assemblies (2-3 hours). Buried behind subframe and A/C lines. Always check for internal transmission damage if ran low on fluid.

Estimated cost: $300-700

Typical onset: 100,000-150,000 mi

Symptoms: Harsh 1-2 or 2-3 shifts, Slipping under load especially in 2nd gear, Shuddering during light acceleration, No reverse or delayed reverse engagement

Fix: Input shaft splines wear, 2nd gear clutches burn, and pressure control solenoid issues plague this transmission. Rebuild runs 12-16 hours, remans available but quality varies. Many owners opt for used units given vehicle value. Fluid changes every 50k help but don't prevent inevitable wear.

Estimated cost: $2,200-3,800

Typical onset: 120,000-180,000 mi

Symptoms: Loud knocking from bottom of engine, Metal shavings in oil, Sudden loss of oil pressure, Catastrophic failure after overheating event

Fix: Connecting rod bearings fail from Dexcool sludging and inadequate oil change intervals. Repair requires complete lower-end rebuild or replacement (20-25 hours). Usually not economical given vehicle value. Caused by combination of intake gasket leaks allowing coolant contamination and extended oil change intervals.

Estimated cost: $3,500-5,500

Typical onset: 70,000-120,000 mi

Symptoms: Window drops into door with loud pop, Window moves slowly or won't go up, Grinding noise when operating window, Window sits crooked in door frame

Fix: Plastic window regulators crack and cables fray. Driver side fails first, then passenger. Requires door panel removal and regulator replacement (1.5-2 hours per door). Aftermarket regulators acceptable but get ones with metal brackets.

Estimated cost: $250-400

Typical onset: 90,000-140,000 mi

Symptoms: Gear oil dripping from center of vehicle, Grinding or whining from transfer case on turns, AWD warning light illuminated, Binding sensation during tight turns

Fix: Output shaft seals leak on AWD models. Requires transmission removal to access (8-10 hours) or drop subframe for seal replacement. Many techs just top off fluid until it becomes catastrophic. Full replacement of transfer case if bearings damaged from running dry.

Estimated cost: $600-1,200

Typical onset: 80,000-150,000 mi

Symptoms: Check engine light with P0440, P0442, P0446 codes, Fuel smell near tank, Difficulty filling fuel tank (pump clicks off early), Hissing sound when opening fuel cap

Fix: Pressure sensor on top of fuel tank fails, and vent valves stick. Related to recall but many still have issues. Tank must be dropped (2-3 hours). Common to find rusted fuel tank straps and filler neck on rust-belt vehicles, adding cost.

Estimated cost: $350-650