2021 Chevrolet Silverado
Vehicle Specs & Maintenance Data
The 2021 Chevrolet Silverado maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Chevrolet Silverado.
For oil changes, the 2021 Chevrolet Silverado takes 5W-30 Full Synthetic motor oil with a capacity of 8 quarts. Brake fluid type is DOT 3, the recommended coolant is Dex-Cool (OAT), and transmission fluid is Dexron VI. Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Chevrolet Silverado, torque the lug nuts to 140 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Owners of the 2021 Chevrolet Silverado have reported 5 common issues including "Active Fuel Management Lifter Failure", "8-Speed Transmission Shudder" and "Electrical and Infotainment Glitches". Scroll down to the Diagnostics tab for detailed descriptions, solutions, and estimated repair costs.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2021 Chevrolet Silverado uses 5W-30 Full Synthetic motor oil (8 qt capacity), requires lug nuts torqued to 140 ft-lbs, takes DOT 3 brake fluid.
Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2021 Chevrolet Silverado.
Common problems reported by 2021 Chevrolet Silverado owners, with recommended fixes and estimated repair costs.
Active Fuel Management Lifter Failure
The 5.3L and 6.2L V8 engines are prone to premature lifter failure, particularly on cylinders deactivated by the Active Fuel Management (AFM) system. Symptoms include a loud ticking or knocking noise, misfires, and a check engine light.
The failed lifters and potentially the camshaft need replacement. Many owners opt to install an AFM delete kit during the repair to prevent recurrence. GM has issued multiple TSBs (PIP5703) but no recall. Some cases are covered under powertrain warranty.
Est. Cost: $3,000 - $5,000 with AFM delete8-Speed Transmission Shudder
The 8-speed automatic transmission (8L90) can develop a harsh shudder or vibration during light acceleration, typically between 25-50 mph. The shudder feels like driving over rumble strips and worsens over time.
GM's recommended fix is a transmission fluid flush with the updated Mobil 1 Blue Label fluid (GM part 19417577). In severe cases, the torque converter may need replacement. GM extended the warranty to 7 years/100K miles for this issue under Customer Satisfaction Program N212345678.
Est. Cost: $150 - $300 for fluid flush; $1,500 - $3,000 for torque converterElectrical and Infotainment Glitches
The infotainment system may freeze, reboot randomly, or display error messages. Dashboard gauges can malfunction, showing incorrect readings. Some owners report the truck failing to recognize the key fob intermittently.
Check for and install any available software updates through the dealer. A hard reset of the infotainment system may temporarily resolve freezing. If the key fob issue persists, the Body Control Module (BCM) may need reprogramming or replacement.
Est. Cost: $0 - $200 for software updates; $400 - $800 for BCMExcessive Oil Consumption
Some 5.3L V8 engines consume oil at a rate higher than normal, sometimes burning a quart every 1,000-2,000 miles. The oil level may drop significantly between changes without any visible external leaks.
Have the dealer perform an oil consumption test. GM TSB 18-NA-025 addresses this for certain engines. In severe cases, piston ring replacement may be necessary. Monitor oil levels frequently between changes and use the recommended 0W-20 dexos1 oil.
Est. Cost: $0 under warranty; $2,500 - $4,000 for piston ring replacementBrake System Concerns
Some owners report brakes feeling soft or spongy, longer stopping distances, and premature brake pad wear on the front axle. A few owners report a grinding noise from the brakes even with adequate pad material remaining.
Inspect brake pads and rotors for premature wear. Bleed the brake system to remove any air. Check the brake booster vacuum hose for leaks. Front brake pads and rotors may need early replacement on trucks used for towing.
Est. Cost: $300 - $800 for front brake job