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2021 Chevrolet Silverado 1500 Maintenance Schedule

Manufacturer-recommended service intervals for the Oil Life System and open recall alerts for your 2021 Chevrolet Silverado 1500.

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Recalls8Full scheduleKnown issues7

How Chevrolet schedules service: Oil Life System

Chevrolet vehicles use the GM Oil Life System (OLS) — a percentage-based monitor that calculates oil life from driving conditions, not fixed mileage. When the OLS drops to 0%, oil and filter are due. The schedule below reflects GM's Normal Use intervals for everything else.

⚠️

8 Open Recalls

Source: NHTSA

SEAT BELTS

Campaign #20V792000 · Dec 17, 2020

Issue: General Motors, LLC (GM) is recalling certain 2019-2021 Chevrolet Silverado 1500 and GMC Sierra 1500, 2021 Chevrolet Suburban and Tahoe and GMC Yukon XL and 2020-2021 Chevrolet Silverado 2500 and 3500 and GMC Sierra 2500 and 3500 vehicles. The seat belt brackets may not be secured to the seat frame in the front-row center seating position.

Risk: If a seat-belt bracket is not secured, the seat belt may not properly restrain an occupant in the front-row center seat position, increasing the risk of injury in a crash.

Fix: GM will notify owners, and dealers will inspect left-side and right-side front-row center seat-belt bracket attachments and reassemble it correctly as necessary, free of charge. The recall began January 26, 2021. Owners may contact GMC customer service at 1-800-462-8782, Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202314670.

SEAT BELTS

Campaign #20V811000 · Dec 23, 2020

Issue: General Motors, LLC (GM) is recalling certain 2020 Chevrolet Bolt EV and 2021 GMC Canyon and Sierra 1500, 2500 and 3500, Yukon, Yukon XL, Cadillac Escalade and Escalade ESV and Chevrolet Blazer, Camaro, Colorado, Equinox, Silverado 1500, 2500 and 3500, Suburban and Tahoe vehicles. Incorrect bolts may have been used at one or more fastening locations to secure the seat belts to the vehicle. If an incorrect bolt was used, the seat belt may not be properly attached to the vehicle.

Risk: If a seat belt assembly is not properly attached to the vehicle, the seat belt may not properly restrain an occupant in the event of a crash, increasing the risk of injury.

Fix: GM will notify owners, and dealers will replace the suspect bolts, free of charge. The recall began January 29, 2021. Owners may contact GMC customer service at 1-800-462-8785, Cadillac customer service at 1-800-458-8006, or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N202322230.

TIRES

Campaign #20V684000 · May 11, 2020

Issue: General Motors LLC (GM) is recalling certain 2020 Buick Enclave, Cadillac XT5, GMC Acadia and Chevrolet Traverse vehicles and 2020-2021 Chevrolet Silverado 1500, GMC Sierra 1500 vehicles. The vehicles may have been manufactured with Continental tires that were overcured.

Risk: Overcured tires may experience a carcass break in the sidewall resulting in a sudden air loss or could develop a belt edge separation which could lead to partial or full tread/belt loss. Either condition increases the risk of a crash.

Fix: GM will notify owners, and dealers will inspect vehicles and replace tires that have DOT number and production mold number combinations identified by Continental, free of charge. The recall began December 17, 2020. Owners may contact GMC customer service at 1-888-988-7267, Buick customer service at 1-866-608-8080, Chevrolet customer service at 1-800-222-1020 or Cadillac customer service at 1-800-458-8006. GM's number for this recall is N202319030.

AIR BAGS:FRONTAL

Campaign #21V495000 · Jan 7, 2021

Issue: General Motors, LLC. (GM) is recalling certain 2021 Chevrolet Silverado 1500 vehicles. The front driver's side air bag module may be missing one or more metal tabs that secure the plastic air bag cover to the housing.

Risk: The missing tabs may prevent the air bag from deploying properly, increasing the risk of injury in a crash.

Fix: Dealers will inspect the driver frontal air bag, and replace it if necessary, free of charge. Owner notification letters are expected to be mailed August 16, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N212336560.

TIRES:TEMPORARY/EMERGENCY SPARE TIRE

Campaign #21V985000 · Dec 16, 2021

Issue: General Motors (GM) is recalling certain 2019-2021 GMC Sierra 1500 and Silverado 1500 vehicles equipped with certain accessory road tires and a 17" spare tire. The 17" spare tire provided with the vehicle is not compatible for use with the accessory wheels, which can cause the anti-lock brake system (ABS) to not function properly under certain conditions.

Risk: An ABS system that does not function properly can increase the risk of a crash.

Fix: Dealers will provide a new 17" spare tire and wheel assembly that is compatible with the accessory wheels, free of charge. Dealers will also apply a new spare tire information label, and provide owners with an owner's manual insert clarifying which spare tire to use with the accessory road tires and with the 17" original tires. Owner notification letters were mailed February 7, 2022. Owners may contact GM customer service at 1-800-462-8782 or GMC customer service at 1-800-462-8782. GM's number for this recall is N212346510.

POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE

Campaign #24V797000 · Oct 24, 2024

Issue: General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel engines. The transmission control valve may fail and cause the rear wheels to lock-up.

Risk: Rear wheel lock-up can increase the risk of a crash.

Fix: Dealers will install new transmission control module software, free of charge. GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve. Owner notification letters were mailed December 12, 2024. Owners may contact GM customer service at 1-888-988-7267, Cadillac customer service at 1-800-458-8006, GMC customer service at GMC 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N242454440.

ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL

Campaign #25V274000 · Apr 24, 2025

Issue: General Motors LLC (GM) is recalling certain 2021-2024 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, GMC Sierra 1500, Yukon, and Yukon XL vehicles equipped with a 6.2L V8 gas engine. The connecting rod and/or crankshaft engine components may have manufacturing defects that can lead to engine damage and engine failure.

Risk: Engine failure increases the risk of a crash.

Fix: Dealers will inspect the engine, and as necessary, repair or replace the engine. For vehicles that pass inspection, dealers will add higher viscosity oil, install 6 oil fill cap, replace the oil filter, and update the owner's manual. Repairs will be performed free of charge. Owner notification letters were mailed June 18, 2025. Owners may contact Cadillac customer service at 1-800-333-4223, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is N252494000.

POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE

Campaign #26V083000 · Dec 2, 2026

Issue: General Motors, LLC is recalling certain 2020 Chevrolet Silverado 2500, 3500, GMC Sierra 2500, 3500, and 2020-2022 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles that may have been repaired incorrectly under recall 24V797. The transmission control valve may fail and cause the rear wheels to lock up.

Risk: Rear wheel lock up increases the risk of a crash.

Fix: Dealers will inspect the vehicles and update the transmission control software, free of charge. Owner notification letters were mailed March 6, 2026. Owners may contact GMC customer service at 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N252516560. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on February 12, 2026.

Recall data refreshed Jul 19, 2026.

Essential maintenance

Critical for safety and preventing major damage

🛢️

Engine Oil & Filter (per Oil Life System)

Every 7,500 mi

Change oil when the Oil Life System reaches 0% or every 12 months — whichever comes first. dexos1-approved synthetic oil required on all gas engines since 2011.

Estimated cost — typical U.S. ranges

Dealer

~$120–$160

Shop

~$85–$115

DIY

~$25–$55

Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.

🔄

Tire Rotation

Every 7,500 mi

Rotate tires every 7,500 miles. Silverado 4x4 and Tahoe owners benefit from earlier rotations to even out drivetrain wear.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Often free at the shop where you bought the tires — worth asking before paying.

🛑

Brake Inspection

Every 7,500 mi

Inspect brake pads, rotors, and parking brake at each tire rotation. Equinox and Malibu front pads typically last 40,000-50,000 miles.

Estimated cost — typical U.S. ranges

Dealer

~$85

Shop

~$60

DIY

Free

Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.

🧪

Brake Fluid

Every 45,000 mi

GM specifies brake fluid replacement based on contamination testing. Test every 30,000 miles; replace if moisture content exceeds 3% or fluid appears dark.

Estimated cost — typical U.S. ranges

Dealer

~$180–$200

Shop

~$125–$140

DIY

~$10–$25

DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.

Important maintenance

Keeps your vehicle running smoothly and efficiently

💨

Engine Air Filter

Every 45,000 mi

GM long-life cellulose air filters are rated 45,000 miles. Direct-injection engines are sensitive to airflow restriction; inspect at every oil change.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

5-minute job on most cars; the airbox lid usually has clips, no tools needed.

⚙️

Automatic Transmission Fluid

Every 45,000 mi

Severe service (heavy towing, frequent stop-and-go, dusty conditions): replace every 45,000 miles. Normal service: 97,500 miles. Use Dexron-VI on 6L80/8L90 transmissions.

Estimated cost — typical U.S. ranges

Dealer

~$330–$500

Shop

~$235–$355

DIY

~$60–$180

Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.

🔩

Transfer Case Fluid (4WD)

Every 45,000 mi

Silverado 4WD and Tahoe 4WD: replace transfer case fluid every 45,000 miles, sooner if towing or off-roading. Use GM Auto-Trak II fluid.

Estimated cost — typical U.S. ranges

Dealer

~$105–$140

Shop

~$75–$100

DIY

~$15–$40

AWD/4WD vehicles only. Easy drain-and-fill on most platforms.

⚡

Spark Plugs

Every 100,000 mi

GM iridium spark plugs are rated 100,000 miles on most LS and LT engines. The 5.3L V8 in Silverado 1500 commonly fouls plugs early under heavy idling.

Estimated cost — typical U.S. ranges

Dealer

~$285–$390

Shop

~$200–$275

DIY

~$25–$100

Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.

🌡️

Dex-Cool Engine Coolant

Every 50,000 mi

GM Dex-Cool (orange): first change at 150,000 miles or 5 years, then every 50,000 miles. Mixing with green coolant creates a sludge that destroys the cooling system.

Estimated cost — typical U.S. ranges

Dealer

~$285–$330

Shop

~$200–$235

DIY

~$25–$60

Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.

🔧

Rear Differential Fluid

Every 50,000 mi

Silverado and Tahoe: replace rear axle fluid every 50,000 miles, or 25,000 miles if towing. Limited-slip differentials require GM friction-modifier additive.

Estimated cost — typical U.S. ranges

Dealer

~$150–$195

Shop

~$105–$135

DIY

~$20–$50

Drain plug + fill plug — straightforward DIY. AWD vehicles have two; budget for both.

Recommended maintenance

Extends the life of your vehicle and improves comfort

🌬️

Cabin Air Filter

Every 22,500 mi

Replace the cabin air filter every 22,500 miles. Silverado and Tahoe owners in dusty climates should replace earlier.

Estimated cost — typical U.S. ranges

Dealer

~$60–$95

Shop

~$45–$70

DIY

~$15–$40

Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.

Known issues for this vehicle

What drivers and federal regulators have officially reported about the 2021 Chevrolet Silverado 1500.

🔎

3 active NHTSA investigations

Source: NHTSA

  • Loss of motive power due to engine failure

    Action #EA25007 · opened Oct 23, 2025

    The Office of Defects Investigation (ODI) has received 1,157 reports of engine bearing failure failures in the L87 6.2L engine produced by General Motors (GM). Of the 1,157 reports received, 173 are outside of the scope of recall 25V-274. These engines are installed in Model Year…

    View on NHTSA →

  • Loss of motive power due to engine failure

    Action #EA25007 · opened Oct 23, 2025

    The Office of Defects Investigation (ODI) has received 1,157 reports of engine bearing failure failures in the L87 6.2L engine produced by General Motors (GM). Of the 1,157 reports received, 173 are outside of the scope of recall 25V-274. These engines are installed in Model Year…

    View on NHTSA →

  • Loss of motive power due to engine failure post recall remedy

    Action #RQ26001 · opened Jan 16, 2026

    The Office of Defects Investigation (ODI) has received 36 Vehicle Owner Questionnaires (VOQs) alleging engine failure in vehicles subject to Recall 25V274. In each VOQ, the engine had the recall remedy completed prior to the reported failure incident. Recall 25V-274 addresses veh…

    View on NHTSA →

Reported to NHTSA

Lifter and camshaft engine failure

ENGINE

45 NHTSA complaints · 2025-11 → 2026-06 (sample of 200 most-recent of 865 total)

“6.2L L87 V8 engine experienced catastrophic engine failure do to lifter failure and a cylinder 8 misfire. Causing additional damage to camshaft. The dealership has inspected the vehicle and refuses to acknowledge the problem as there own. I have invoices for the work if I choose…”
— Owner report, NHTSA ODI #11714911
“For the second time in my 2021 Chevrolet Silverado with a 5.3-liter engine, I've had GM lifter failure. It's directly related to the Active Fuel Management System (AFM), and was confirmed by my Chevrolet dealer's mechanic and service writer, Burdick Chevrolet in Cicero, New…”
— Owner report, NHTSA ODI #11733351
“I have a 2021 Silverado LT trailboss. Catastrophic engine failure. Camshaft bearing and lifter failure. First lifter replacement @ 16,000 miles. Second at 104,000 miles. Was told by GM the 6.2L L87 I have is not affected due to a Canadian VIN. The sticker on the truck says…”
— Owner report, NHTSA ODI #11740532
“Component that failed: The valve train system failed due to collapsed lifters in the GM 5.3L L84 engine. The lifter failure caused internal camshaft damage requiring major repair. The failed components were removed by the Chevrolet dealership and should be available through the…”
— Owner report, NHTSA ODI #11711951

Read all complaints on NHTSA →

Transmission shudder and shifting failure

POWER TRAIN

30 NHTSA complaints · 2025-11 → 2026-06 (sample of 200 most-recent of 865 total)

“The powertrain transmission system, specifically the torque converter, failed on my 2021 Chevrolet Silverado at approximately 66,000 miles. The vehicle was taken to and inspected by a GM-authorized dealership, Pellegrino Chevrolet, on January 7, at which time the dealership…”
— Owner report, NHTSA ODI #11711703
“The vehicle experienced a sudden and complete transmission failure at approximately 77,800 miles. There was no prior abuse or modification. The failure resulted in loss of normal drivability and required full transmission replacement. The transmission was replaced with a…”
— Owner report, NHTSA ODI #11717291
“Hard shifting in most lower gears, slipping gears, shuddering in higher gears”
— Owner report, NHTSA ODI #11729331
“Transmission Shuddering, trembling and rough shifting”
— Owner report, NHTSA ODI #11714916

Read all complaints on NHTSA →

Electronic tailgate opening unexpectedly

LATCHES/LOCKS/LINKAGES

12 NHTSA complaints · 2025-11 → 2026-05 (sample of 200 most-recent of 865 total)

“The tailgate randomly opens and closes during driving causing contents to fall out of the tailgate and creating a hazard for other motorists and damaging personal property. The tailgate now will not open and there is no manual override to open the tailgate. Certainly a design…”
— Owner report, NHTSA ODI #11713846
“1- Tailgate keeps opening by itself. It has opened while driving down the highway and things fell out of back of my truck almost causing an accident. It has opened while sitting in my driveway after I have turned the truck off and gone inside. I have reported this to a dealer…”
— Owner report, NHTSA ODI #11710866
“The vehicle has an electric tailgate lock switch failure/defect. The tailgate unlocks on its own and pops open while driving, at stop lights, in drive-thru restaurants, and while parked which causes a safety hazard to the driver and passengers in the vehicle, as well as other…”
— Owner report, NHTSA ODI #11715521

Read all complaints on NHTSA →

Loss of power steering

STEERING

8 NHTSA complaints · 2026-03 → 2026-05 (sample of 200 most-recent of 865 total)

“Sudden loss of power steering, usually upon initial start. May return, may not return during drive. Began around 1 week ago. Sudden loss of power steering when turning either right or left has occurred causing a dangerous situation. Upon loss of power steering, 2 warnings…”
— Owner report, NHTSA ODI #11740226
“All of a sudden my check engine light came on with the sudden loss of power steering. Almost impossible to steer at low speeds. After turning it off I waited about 15 minutes then restarted the engine and there was no problem steering. Concern about it happening again in the…”
— Owner report, NHTSA ODI #11730487
“When I started my truck, a "service power steering" error was displayed in my DIC. My power steering lost all control. After driving for 10 minutes and then shutting the truck off for about 5 minutes, the system reset. This looks very similar to the recall #N212333900, but 2021…”
— Owner report, NHTSA ODI #11722101

Read all complaints on NHTSA →

Coolant control valve failure and reduced power

UNKNOWN OR OTHER

5 NHTSA complaints · 2026-01 → 2026-04 (sample of 200 most-recent of 865 total)

“P1098 engine coolant control valve Engine light comes on and truck says reduced power. Then went off. Back on again”
— Owner report, NHTSA ODI #11718662
“The special coverage program on the coolant valve for My 2021 Chevy Silverado (70,000mi) is not covered due to my vin not being on the list. Something they say and know is an issue, but not covering it for the vehicles they say they’re covering it for.”
— Owner report, NHTSA ODI #11734999
“The coolant control valve has failed, my vin isn’t a part of the special coverage for this bad part ( though the same part and model is covered)”
— Owner report, NHTSA ODI #11709387

Read all complaints on NHTSA →

Brake system failure and loss of braking

SERVICE BRAKES

6 NHTSA complaints · 2025-12 → 2026-03 (sample of 200 most-recent of 865 total)

“The contact owns a 2021 Chevrolet Silverado 1500. While driving 43 MPH, the message "Brake Failure" was displayed. The contact then lost control of the vehicle, and the vehicle drove from the right side to the left side of the road, the vehicle drove off the road and crashed…”
— Owner report, NHTSA ODI #11719805
“Master Brake Cylinder failed according to dealership. This however is the second time this issue has occurred. This system failure caused brakes to not respond correctly leading to risk of collision. My safety and my kid's safety was put at risk due to issue happening while…”
— Owner report, NHTSA ODI #11723332
“The brake stopped working. I just bought the car two months ago.”
— Owner report, NHTSA ODI #11705001

Read all complaints on NHTSA →

Rear window water intrusion

UNKNOWN OR OTHER

4 NHTSA complaints · 2025-11 → 2026-03 (sample of 200 most-recent of 865 total)

“The rear window in my 2021 Silverado 2500 leaks when it rains, water is getting in the carpet/seats creating a bad odor and mold. The dealership will not assist in fixing this known issue.”
— Owner report, NHTSA ODI #11724840
“Rear power window has been replaced multiple times, each time it develops cracks and leaks water causing possible mold in the truck cabin.”
— Owner report, NHTSA ODI #11698924
“The track on the back glass is cracked and leaking water into the interior back cab light.”
— Owner report, NHTSA ODI #11701829

Read all complaints on NHTSA →

Note: NHTSA also opened 6 defect investigation(s) on this vehicle that closed without action.

Issues on other model years

  • 2018 Chevrolet Silverado 1500 →
  • 2019 Chevrolet Silverado 1500 →
  • 2020 Chevrolet Silverado 1500 →
  • 2022 Chevrolet Silverado 1500 →
  • 2023 Chevrolet Silverado 1500 →
  • 2024 Chevrolet Silverado 1500 →

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Jul 19, 2026. Investigation data refreshed Jul 19, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.

How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.

This maintenance schedule for the 2021 Chevrolet Silverado 1500 reflects Chevrolet's published service intervals and the Oil Life System system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

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