2018 CHEVROLET SILVERADO 1500

Typical onset: 60,000-120,000 mi

Symptoms: Check engine light with P0300-P0308 misfire codes and P0521 oil pressure codes, Loud ticking/tapping from engine that gets worse with RPM, Metal shavings in oil, sudden oil consumption, Complete loss of power, engine knocking before catastrophic failure

Fix: AFM lifters collapse, wiping out camshaft lobes and pushing debris through the oil system. Requires complete engine teardown or replacement. Short block swap runs 25-35 labor hours, full rebuild 30-40 hours depending on damage extent. Many techs recommend AFM delete kit during repair to prevent recurrence.

Estimated cost: $6,500-12,000

Typical onset: 50,000-100,000 mi

Symptoms: Transmission fluid dripping near radiator or under truck, Pink/red fluid puddles after parking, Low transmission fluid warning, slipping shifts if fluid level drops significantly, Visible corrosion or wetness on cooler lines at crimped connections

Fix: The steel cooler lines rust through at crimped joints or corrode where they connect to the radiator. Both lines typically need replacement together. 2-3 hours labor, must drop skid plate and sometimes exhaust heat shield. Aftermarket stainless lines are available as upgrade.

Estimated cost: $400-750

Typical onset: 30,000-80,000 mi

Symptoms: Shudder or vibration during light acceleration between 25-50 mph, Harsh 1-2 or 2-3 upshifts, especially when cold, Delayed engagement into drive or reverse, Transmission slipping feeling under load

Fix: Torque converter clutch shudder from inadequate fluid friction properties or valve body wear. GM issued multiple TSBs and fluid updates. Start with complete fluid/filter service using latest Mobil1 LV ATF HP spec (3-4 hours). If shudder persists, torque converter replacement runs 8-12 hours. Some cases need valve body or complete transmission replacement.

Estimated cost: $400-5,500

Typical onset: 70,000-130,000 mi

Symptoms: Sudden loss of power steering assist, heavy steering wheel, Service power steering warning message on DIC, Grinding or whining noise from steering column area, Intermittent assist loss that returns after restart

Fix: The electric assist motor on the column fails internally, often due to water intrusion or bearing wear. Requires steering column R&R and motor replacement. 3-5 hours labor depending on cab configuration. GM extended warranty on some units but 2018 often falls outside coverage.

Estimated cost: $900-1,600

Symptoms: Hard brake pedal, increased stopping effort required, Hissing sound near brake pedal area, Check engine light with P0174/P0171 lean codes (vacuum leak), Rough idle or stalling in some cases

Fix: The vacuum check valve on the brake booster fails or the booster itself develops internal leaks. This was subject to NHTSA recalls for some VINs. Check valve replacement is 0.5-1 hour, full booster swap is 2-3 hours. Verify recall status before purchasing parts.

Estimated cost: $150-650

Typical onset: 40,000-90,000 mi

Symptoms: No start condition, cranks but won't fire, Intermittent stalling while driving, typically when fuel tank below half, Check engine light with P0087 low fuel pressure code, Fuel pump not priming on key-on

Fix: The fuel pump control module (mounted above spare tire or inside frame rail) fails due to corrosion or internal circuit failure. Module replacement is 1-2 hours including diagnosis. Separate issue from actual fuel pump failure. Some techs coat replacement module connections with dielectric grease for longevity.

Estimated cost: $400-700

Symptoms: Air bag warning light illuminated, No obvious symptoms until deployment event, Potential for over-pressurization during crash (safety risk)

Fix: NHTSA recall for side curtain air bag inflators that may rupture or improperly deploy. Dealer-only repair, typically 2-4 hours per side for curtain module replacement. Critical safety recall - check VIN status before purchase and ensure completion.

Estimated cost: $0 (recall repair)