The 2018 Chevrolet Silverado 1500 belongs to the K2XX generation (2014-2018), built with 4.3L V6, 5.3L EcoTec3 V8, or 6.2L V8, most with Active Fuel Management cylinder deactivation. It takes 0W-20 or 5W-30 full synthetic depending on engine. Oil changes run 7,500 - 10,000 miles on the oil life monitor. This is the final model year of that generation, usually the most sorted version of the design before the redesign that followed.
A 2018 Chevrolet Silverado 1500 is 8 years old in 2026, which at an average 12,000 miles a year puts it around 96,000 miles - the interval that decides its future. At roughly 96,000 miles a vehicle enters the window that most separates the ones that reach 200,000 miles from the ones that do not. Keeping up with whatever its own manufacturer schedule calls for here is what avoids expensive failures later. The next milestone on its own schedule is 100,000 miles, under a year away at average use, listed as: Spark plug replacement - ACDelco 41-114 iridium, Transmission fluid drain-and-fill (normal-duty), Coolant system inspection; flush at 150k or 5 years, Inspect drive belt; replace if cracked or worn.
The fault most worth knowing about on this generation is Transmission shudder from the torque converter clutch, usually resolved with the correct fluid. Owners also report Active Fuel Management lifter failure on the 5.3L, the defining expensive fault of this generation; and Excessive oil consumption on some AFM engines, worth monitoring between changes. None of these are certainties on any individual vehicle - they are the patterns worth checking for when you buy or when a symptom appears.
Track your 2018 Chevrolet Silverado 1500 service history free with the ServiceSage maintenance tracker, or compare it against other model years on the Chevrolet Silverado 1500 maintenance schedule hub.
| Interval | Service |
|---|---|
| Per GM OLMS (every 7,500-10,000 mi typical) | Engine oil change with dexos1 0W-20 Full Synthetic, Replace oil filter (ACDelco PF63 or equivalent), Reset OLMS oil life indicator, Check tire pressure |
| Every 7,500 mi | Tire rotation, Visual inspection of brakes, suspension, steering components, Inspect CV axle boots and U-joints, Inspect exhaust system and heat shields |
| Every 22,500 mi | Replace cabin air filter (ACDelco CF188), Inspect serpentine belt and tensioner, Lubricate door hinges and hood latch |
| Every 30,000 mi | Inspect engine air filter; replace if dirty or at 45,000 mi, Inspect 4WD front axle and transfer case fluid levels, Inspect brake fluid - flush if moisture-contaminated or at 36 months |
| Every 45,000 mi (severe duty: towing, trailer, off-road) | Transmission fluid drain-and-fill with Dexron VI ATF (severe duty), Front differential fluid change (GM 75W-90 synthetic), Rear differential fluid change (GM 75W-90 synthetic), Transfer case fluid change (Auto-Trak II) |
| Every 100,000 mi | Spark plug replacement - ACDelco 41-114 iridium, Transmission fluid drain-and-fill (normal-duty), Coolant system inspection; flush at 150k or 5 years, Inspect drive belt; replace if cracked or worn |
| Every 150,000 mi | Engine coolant flush - replace with GM Dex-Cool (orange), Inspect water pump and thermostat |
The table above is indexed by service interval. This is the same schedule indexed by odometer reading, for when you know your mileage and want the list. If your odometer sits between these figures, work back to the last one you passed and catch up anything skipped.
| Odometer | Service due |
|---|---|
| 30,000 mi (48,000 km) | Tire rotation, Visual inspection of brakes, suspension, steering components, Inspect CV axle boots and U-joints, Inspect exhaust system and heat shields, Inspect engine air filter; replace if dirty or at 45,000 mi, Inspect 4WD front axle and transfer case fluid levels, Inspect brake fluid - flush if moisture-contaminated or at 36 months. The every-22,500 mi service runs on its own cycle - the nearest fall at 22,500 and 45,000 miles. |
| 60,000 mi (97,000 km) | Same as the 30,000 mi service. The every-22,500 mi service runs on its own cycle - the nearest fall at 45,000 and 67,500 miles. |
| 90,000 mi (145,000 km) | Tire rotation, Visual inspection of brakes, suspension, steering components, Inspect CV axle boots and U-joints, Inspect exhaust system and heat shields, Replace cabin air filter (ACDelco CF188), Inspect serpentine belt and tensioner, Lubricate door hinges and hood latch, Inspect engine air filter; replace if dirty or at 45,000 mi, Inspect 4WD front axle and transfer case fluid levels, Inspect brake fluid - flush if moisture-contaminated or at 36 months. |
| 100,000 mi (161,000 km) | Spark plug replacement - ACDelco 41-114 iridium, Transmission fluid drain-and-fill (normal-duty), Coolant system inspection; flush at 150k or 5 years, Inspect drive belt; replace if cracked or worn. The every-7,500 mi service runs on its own cycle - the nearest fall at 97,500 and 105,000 miles. |
| 120,000 mi (193,000 km) | Same as the 30,000 mi service. The every-22,500 mi service runs on its own cycle - the nearest fall at 112,500 and 135,000 miles. |
| 150,000 mi (241,000 km) | Tire rotation, Visual inspection of brakes, suspension, steering components, Inspect CV axle boots and U-joints, Inspect exhaust system and heat shields, Inspect engine air filter; replace if dirty or at 45,000 mi, Inspect 4WD front axle and transfer case fluid levels, Inspect brake fluid - flush if moisture-contaminated or at 36 months, Engine coolant flush - replace with GM Dex-Cool (orange), Inspect water pump and thermostat. The every-22,500 mi service runs on its own cycle - the nearest fall at 135,000 and 157,500 miles. |
| 200,000 mi (322,000 km) | Same as the 100,000 mi service. The every-7,500 mi service runs on its own cycle - the nearest fall at 195,000 and 202,500 miles. |
| Part | Fitment note | Buy |
|---|---|---|
| Mobil 1 0W-20 Full Synthetic (5 qt) | dexos1-approved 0W-20 - required for 4.3L, 5.3L, and 6.2L EcoTec3 engines | Check price on Amazon |
| ACDelco PF63 Engine Oil Filter | OEM spin-on filter for 4.3L/5.3L/6.2L EcoTec3 Silverado | Check price on Amazon |
| ACDelco 41-114 (12622441) Iridium Spark Plug | 100,000-mile iridium plugs for L83/L86 EcoTec3 V8 (use 6 for the 4.3L V6) | Check price on Amazon |
| ACDelco Dexron VI ATF 10-9395 (1 gal) | Required for 6L80, 6L90, and 8L90 transmissions - do not substitute | Check price on Amazon |
| ACDelco 10-101 DEX-COOL Extended Life Coolant (1 gal) | Orange Dex-Cool - do not mix with green conventional coolant | Check price on Amazon |
| Range Technology AFM Disabler (RA003B) | Plug-in OBD device that disables Active Fuel Management - popular preventive measure against L83 lifter failure | Check price on Amazon |
Affiliate Disclosure: ServiceSage Auto participates in the Amazon Services LLC Associates Program. We earn a small commission from qualifying purchases at no extra cost to you. This helps us keep our content free and up-to-date.
| Fastener | Torque | Size |
|---|---|---|
| Lug nut | 140 ft-lbs (190 Nm) | 22mm (13/16") |
| Oil drain plug | 18 ft-lbs (25 Nm) | 15mm |
| Spark plug | 15 ft-lbs (20 Nm) | 5/8 in. (16mm) |
The 2018 Chevrolet Silverado has 7 safety recalls on record with NHTSA, affecting the service brakes, air bags (as of 2026-07-09). Recall repairs are free at any dealer. Run the live check on this page. Get reminded before recalls and services.
Maintenance keeps these away, but when the dash does light up these are the codes this vehicle throws most often - each with what it means and what the repair actually costs.