2003 DODGE DURANGO

Typical onset: 80,000-150,000 mi

Symptoms: Pink milkshake in coolant reservoir (transmission fluid mixing with coolant), Transmission slipping or delayed engagement, Check engine light with trans codes, Overheating transmission

Fix: The cooler inside the radiator fails, allowing coolant into the trans and vice versa. Catch it early: flush both systems, replace radiator, you're out $800-1,200. Miss it by a day and the transmission is toast — now you're looking at a rebuild or replacement at 8-12 hours labor plus $1,500-2,500 in parts.

Estimated cost: $2,500-4,500

Typical onset: 70,000-120,000 mi

Symptoms: Clunking over bumps from front end, Wandering or loose steering feel, Uneven tire wear on inside edges, Visible play when prying on suspension components

Fix: Ball joints wear and can separate catastrophically — wheel literally folds under. Replace uppers and lowers on both sides as a set, 4-6 hours labor. Alignment mandatory after.

Estimated cost: $800-1,400

Typical onset: 100,000-180,000 mi

Symptoms: Sudden loss of compression on one or more cylinders, Severe knocking or rattling from engine, Metal shavings in oil, Engine may run rough then die completely

Fix: Valve seats drop out of the aluminum heads on the 4.7L, destroying pistons and cylinder walls. Requires complete engine rebuild or replacement. Short block swap is 18-24 hours, long block 14-18 hours. Seen this end trucks with no warning at highway speed.

Estimated cost: $4,500-7,500

Typical onset: 80,000-140,000 mi

Symptoms: Growling or humming that increases with speed, ABS or traction control light intermittently, Noise changes with turning left or right, Wheel play when jacked up

Fix: Hub assemblies have integral wheel speed sensors that fail. Replace the complete unit per side, 2-3 hours labor each. Do both sides if one goes and mileage is high — second one isn't far behind.

Estimated cost: $400-700

Typical onset: 90,000-160,000 mi

Symptoms: No-start condition, cranks but won't fire, Stalling at operating temperature, Loss of power under acceleration, Whining noise from fuel tank area

Fix: In-tank pump dies, leaves you stranded. Drop the tank, replace pump assembly, 3-4 hours labor. Not a fun job but straightforward.

Estimated cost: $600-1,000

Typical onset: 80,000-150,000 mi

Symptoms: Ticking noise from engine bay on cold start, Exhaust smell in cabin, Visible cracks or soot streaks on manifolds, Sound lessens as engine warms up

Fix: Cast iron manifolds crack from heat cycles. Can run like this for years but eventually fails emissions and gets loud. Replace both sides if doing the job, 5-7 hours with seized studs factored in.

Estimated cost: $800-1,400

Typical onset: 90,000-140,000 mi

Symptoms: Power steering fluid leaking from gear box area, Play in steering wheel (quarter-turn slop), Wandering on highway requiring constant correction, Groaning when turning at low speed

Fix: Sector shaft seal leaks and internal wear creates slop. Rebuild kits are hit-or-miss; most shops replace the entire gear box. 3-4 hours labor, alignment after.

Estimated cost: $600-1,100