1998 CHEVROLET S-10

Typical onset: 120,000-180,000 mi

Symptoms: Cold-start piston slap that worsens over time, eventually present when warm, Rod knock develops suddenly after piston skirt failure, Metallic ticking that accelerates with RPM, Metal shavings in oil, dropping oil pressure

Fix: Requires complete lower end rebuild or replacement. Pistons, rings, rod bearings, main bearings all typically needed. Some shops recommend short block replacement over rebuild due to cylinder wall wear. 18-24 labor hours for in-frame rebuild, 22-28 hours for full removal and short block swap.

Estimated cost: $3,200-5,500

Typical onset: 80,000-140,000 mi

Symptoms: Coolant loss with no visible external leaks, White smoke from exhaust on cold start, Rough idle and misfire codes, Coolant in oil (milky dipstick) in severe cases, Overheating if coolant level drops significantly

Fix: Upper and lower intake gaskets require replacement. The Dex-Cool coolant accelerates gasket degradation. Include coolant flush and thermostat replacement while in there. 6-8 labor hours.

Estimated cost: $650-1,100

Typical onset: 100,000-150,000 mi

Symptoms: Transmission fluid leaking from lines running to radiator, Fluid spraying onto exhaust creating smoke, Sudden loss of all gears if catastrophic line rupture, Low fluid level causing slipping and delayed engagement

Fix: Steel lines rust through where they route near frame rails. Replace both cooler lines preventively, not just the leaking one. Some techs install aftermarket auxiliary coolers to bypass the radiator circuit entirely. 2-3 labor hours for lines, 4-5 hours if adding external cooler.

Estimated cost: $350-750

Typical onset: 130,000-180,000 mi

Symptoms: No-start condition with cranking but no fuel pressure, Stalling at operating temperature, especially in hot weather, Hesitation and surging under load before complete failure, Whining noise from fuel tank (early warning sign)

Fix: In-tank pump requires dropping the fuel tank. Check fuel pressure first—don't assume pump if you have injector issues. Replace fuel filter simultaneously if not recently done. 3-4 labor hours.

Estimated cost: $450-700

Typical onset: 150,000-200,000 mi

Symptoms: External coolant seepage at head/block junction, Combustion gases in cooling system (bubbling overflow tank), Overheating under load, White exhaust smoke if coolant enters cylinder

Fix: The 2.2L is more reliable than the V6, but head gaskets eventually fail. Check for head warpage—if flat, gasket-only job runs 8-10 hours. If machining needed, add 2-3 hours and $150-250. Replace thermostat and water pump while in there.

Estimated cost: $800-1,400

Symptoms: ABS light illuminated constantly, Codes for rear wheel speed sensor circuit, Normal braking function but no ABS activation, More common in rust-belt trucks

Fix: Rear ABS sensors and tone rings on axle shafts corrode. Sensors are easy; tone rings require axle shaft removal if damaged. Many owners simply disable ABS if brake function is normal. Sensor replacement: 1 hour per side. Axle shaft R&R if tone ring replacement needed: 2-3 hours per side.

Estimated cost: $200-600

Typical onset: 100,000+ mi

Symptoms: Clunking when shifting from Park to Drive or Reverse, Excessive driveline vibration, Visible sagging of transmission tailshaft, Harsh engagement into gear

Fix: Rubber mount deteriorates and allows excessive transmission movement. Simple replacement but requires supporting transmission. 1.5-2 labor hours.

Estimated cost: $180-300