2020 CHEVROLET SILVERADO 1500

Typical onset: 40,000-80,000 mi

Symptoms: sudden loss of power under load, metallic knocking from block, low oil pressure warning, metal shavings in oil, complete seizure

Fix: Wrist pin failures cause piston collapse and block damage; requires complete engine replacement or short block swap. 18-24 labor hours for R&R plus machining time if salvaging heads.

Estimated cost: $8,000-14,000

Typical onset: 60,000-100,000 mi

Symptoms: excessive oil consumption (1 qt per 1,000 mi or worse), blue smoke on startup, rough idle with misfire codes, rod knock at cold start, coolant contamination in oil

Fix: Piston ring land failures and spun bearings require short block replacement or full rebuild with updated pistons. 22-28 labor hours depending on cab configuration and whether heads need work.

Estimated cost: $12,000-18,000

Typical onset: 30,000-70,000 mi

Symptoms: shudder on 2-3 or 3-4 upshift especially under light throttle, delayed or harsh downshifts, transmission overheating warnings, fluid contamination from internal cooler leak, limp mode with P0748 or P2769 codes

Fix: Torque converter shudder often requires fluid flush with updated fluid (3-4x flushes) or TC replacement. External cooler line leaks common at quick-connect fittings. Internal trans cooler can fail and cross-contaminate coolant. TCM reflash resolves some shift issues but not mechanical damage. 2-3 hours for flush, 8-12 hours for TC replacement, 6-8 hours for cooler lines.

Estimated cost: $400-3,500

Typical onset: 50,000-90,000 mi

Symptoms: clunk on acceleration or deceleration, vibration at highway speeds (65-75 mph), squeaking or grinding from underneath at low speed, visible play in driveshaft when rocking vehicle

Fix: Two-piece driveshaft design uses center carrier bearing that fails prematurely, especially on 4WD models. U-joints also wear quickly. NHTSA recall 20V-464 addressed some production batches. Full driveshaft replacement recommended over piecemeal bearing swap. 2-3 labor hours.

Estimated cost: $800-1,400

Symptoms: no-start condition with crank but no fire, stalling at idle after warmup, hesitation or stumble under acceleration, fuel pump not priming on key-on, P0087 low fuel pressure code

Fix: Both in-tank pump assembly and external fuel pump control module fail. NHTSA recall 20V-550 covered some units but many outside recall window still fail. Pump replacement requires dropping tank. Module is chassis-mounted and easier. Diagnosis critical to avoid parts-swapping. 1.5-2 hours for module, 3-4 hours for pump.

Estimated cost: $600-1,800

Typical onset: 40,000-80,000 mi

Symptoms: pulling to one side during braking, excessive heat from one wheel, rapid pad wear on one side, brake drag or reduced fuel economy, ABS activation on dry pavement

Fix: Caliper slide pins corrode or pistons seize despite proper service intervals. NHTSA recall 20V-057 addressed some early-build units with defective calipers. Replace calipers in pairs, not singles. 2-3 hours for both fronts including flush.

Estimated cost: $600-1,000

Typical onset: 50,000-100,000 mi

Symptoms: clicking or ticking noise from dash on startup or temp changes, no air from certain vents, stuck on heat or AC only, temp fluctuations between vents, inability to defrost windshield

Fix: Multiple actuators control airflow and temp zones; any can fail but driver side most common. Dash removal not always required but tight access. 1.5-3 hours depending on which actuator and trim level.

Estimated cost: $250-600