What is the 2014-2024 Chevrolet Silverado 1500 Sudden Loss of Electric Power Steering Assist / EPS Rack Failure (NHTSA Investigation)?

The Silverado 1500 uses a rack-mounted electric power steering (EPS) system, and owners across multiple model years report sudden, momentary loss of steering assist — usually at low speed — often with a 'Service Power Steering / Drive Carefully' message, a clicking or notchy feel… Repairs typically run $0-$2,300. Severity: high.

What is the 2019-2025 Chevrolet Silverado 1500 2.7L TurboMax (L3B) lifter failure, intake-valve carbon buildup, and high oil consumption?

The turbocharged 2.7L inline-4 (RPO L3B, marketed as TurboMax) used in fourth-gen Silverado 1500 work-grade and mid-trim trucks has generated a growing body of owner complaints distinct from the better-known 5.3L/6.2L V8 problems. Reported failures include collapsed/failed valve… Repairs typically run $1,500-$6,000. Severity: high.

What is the 2021-2024 Chevrolet Silverado 1500 6.2L L87 V8 Connecting Rod / Crankshaft Failure (Loss of Propulsion Recall 25V274)?

Certain 6.2L L87 V8 engines left the factory with manufacturing defects in the connecting rods and/or crankshaft — sediment/debris left in the crankshaft oil galleries and out-of-spec crankshaft finish starve the rod bearings of oil. The bearings spin, the rod can knock or seize,… Repairs typically run $0-$12,000. Severity: high.

What is the 2020-2024 Chevrolet Silverado 1500 3.0L Duramax 'Service Emission System' Limp-Mode From DEF/NOx Sensor Faults?

The 3.0L Duramax throws a 'Service Emission System' warning with a staged speed-limit countdown (e.g. 'In 175 miles speed will be limited to 65 mph', then 55 mph, then a no-restart threshold), frequently dropping the truck into limp mode. Root causes are faulty DEF level/quality… Repairs typically run $200-$1,500. Severity: high.

What is the 2015-2023 Chevrolet Silverado 1500 8/10-Speed Transmission Shudder?

Both the 8-speed and 10-speed automatic transmissions can develop a shudder during light acceleration. This torque converter clutch issue is widespread across GM trucks. Multiple TSBs have been issued addressing this concern. Repairs typically run $200-$3,500. Severity: medium.

What is the 2007-2024 Chevrolet Silverado 1500 Catalytic Converter Theft Vulnerability (High Ground Clearance, Easily Accessed Converters)?

The full-size Silverado 1500 is one of the most frequently targeted vehicles in the U.S. for catalytic converter theft. Its high ground clearance and underbody-mounted, easily reached converters let thieves cut them out in seconds, often in broad daylight, and lifted trucks are e… Repairs typically run $300-$3,000. Severity: medium.

What is the 2015-2022 Chevrolet Silverado 1500 Transmission Overheating from Failed 8L90 Thermal Bypass Valve / Cooler-Line Leaks?

Silverado 1500 trucks with the 8L90 eight-speed (and the older 6L80 six-speed) can run dangerously hot when the factory transmission thermal bypass valve sticks closed, so fluid never reaches the cooler — common under towing or heavy load. Sustained temperatures above ~220-250°F… Repairs typically run $150-$1,200. Severity: medium.

What is the 2021-2022 Chevrolet Silverado 1500 3.0L Duramax (LM2) engine coolant control valve failure (GM Special Coverage N252508341)?

Silverado 1500 trucks with the 3.0L LM2 Duramax inline-6 turbodiesel are prone to failure of the electronically actuated engine coolant control valve. Failure illuminates the check-engine light, can leave cooling fans running after the key is off (draining the battery), and in so… Repairs typically run $0-$600. Severity: medium.

What is the 2019-2024 Chevrolet Silverado 1500 2.7L Turbomax (L3B) Cold-Start Rattle and Wastegate Actuator Wear?

The turbocharged 2.7L Turbomax four-cylinder develops a metallic rattle/knock on cold start-up, most pronounced in the first few seconds before oil pressure builds. The root cause is premature wear in the turbocharger wastegate linkage/actuator, which can also throw a turbo-under… Repairs typically run $300-$2,500. Severity: medium.

What is the 2019-2022 Chevrolet Silverado 1500 Power Sliding / Rear Window Frame Cracking and Leaking From Body Flex?

On the T1-platform (2019+) Silverado 1500, the plastic frame surrounding the rear window (especially the power/electric sliding window) cracks and the window works loose in its channel. GM technicians attribute it to excessive cab/body flex over uneven roads and towing loads. Wat… Repairs typically run $350-$1,200. Severity: medium.

What is the 2007-2024 Chevrolet Silverado 1500 Water Pump Failure / Weep-Hole Coolant Leak on 5.3L and 6.2L V8?

The mechanical (belt-driven) water pump on the LS/LT V8 Silverado 1500 is a common wear-out item. The internal shaft seal fails and coolant seeps from the pump's weep hole, often appearing as orange/Dex-Cool residue or a puddle at the front-center of the truck; the weep-hole drip… Repairs typically run $200-$1,450. Severity: medium.

What is the 2014-2022 Chevrolet Silverado 1500 Service StabiliTrak / Service Traction Control / 'Reduced Engine Power' Cascade?

A widely reported Silverado 1500 complaint is a sudden cascade of dash messages — 'StabiliTrak disabled,' then 'Service StabiliTrak,' 'Service Traction Control,' and finally 'Engine Power Reduced' — sometimes with a stumble or stall and limited throttle response. The most common… Repairs typically run $150-$700. Severity: medium.

What is the 2007-2024 Chevrolet Silverado 1500 Broken Exhaust Manifold Bolts on 5.3L/6.2L V8 Causing Exhaust Tick and False P0420?

GM's small-block V8s (Gen III/IV LS and Gen V LT) in the Silverado 1500 are notorious for snapping exhaust manifold bolts. The steel bolts and the aluminum cylinder heads expand and contract at different rates through countless heat cycles, fatiguing the bolts until the heads sna… Repairs typically run $250-$900. Severity: medium.

What is the 2014-2021 Chevrolet Silverado 1500 Driveshaft Vibration / Slip Yoke Clunk?

The aluminum driveshaft on Silverados can develop vibration from worn U-joints or an out-of-balance condition. Additionally, the slip yoke can cause a clunk during shifts or when going from acceleration to deceleration due to worn splines or dry conditions. Repairs typically run $100-$600. Severity: low.

What is the 2019-2023 Chevrolet Silverado 1500 Infotainment Screen Freezing/Black Screen?

The infotainment system can freeze, display a black screen, or reboot randomly. This affects navigation, audio, backup camera, and vehicle settings. Software bugs and hardware failures are both possible causes. Repairs typically run $0-$1,200. Severity: low.

What is the 2019-2023 Chevrolet Silverado 1500 Auto Stop/Start Quits Working ('Auto Stop Unavailable') From Battery State-of-Charge Faults?

The auto stop/start feature stops engaging and the DIC shows 'Auto Stop Unavailable' or the feature simply never activates. GM traces most cases to the Body Control Module reading the battery as perpetually below ~75% state-of-charge, which disables stop/start to protect restart… Repairs typically run $250-$450. Severity: low.

What is the 2019-2023 Chevrolet Silverado 1500 Bose Amplifier / Speaker Crackling, Static and No-Sound (Refreshed Cabin)?

Silverados with the Bose audio system develop crackling, popping, and static, distortion at higher volume, or entire sections of speakers (e.g., all driver-side, or the center dash speaker) going silent. Causes range from a software/firmware bug in the IOK/Google-built-in radio,… Repairs typically run $0-$600. Severity: low.

Chevrolet · Known Issues

2021 Chevrolet Silverado 1500 Problems: 21 Issues Every Owner Should Know

2021 model year · 6,243+ owner reports · Updated July 2026

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According to Au7o's analysis of 6,243+ owner reports, the 2021 Chevrolet Silverado 1500 has 21 documented known issues, with 7 rated critical. The most serious are Brake Booster/Assist Malfunction (T1) ($500-$1,800 repair), Fuel Pump Module Failure ($400-$1,000 repair), Sudden Loss of Electric Power Steering Assist / EPS Rack Failure (NHTSA Investigation) ($0-$2,300 repair), 6.2L L87 V8 connecting-rod/crankshaft bearing failure causing loss of propulsion (recall 25V274) ($0-$12,000 repair), 2.7L TurboMax (L3B) lifter failure, intake-valve carbon buildup, and high oil consumption ($1,500-$6,000 repair), 6.2L L87 V8 Connecting Rod / Crankshaft Failure (Loss of Propulsion Recall 25V274) ($0-$12,000 repair) and 3.0L Duramax 'Service Emission System' Limp-Mode From DEF/NOx Sensor Faults ($200-$1,500 repair). The most commonly reported issue is with 3,200 owner reports. at .

Frequently Asked Questions

What are the most common Chevrolet Silverado 1500 problems?

According to Au7o's analysis of 6,243+ owner reports, the 2021 Chevrolet Silverado 1500 has 21 documented issues. The most frequently reported are: Brake Booster/Assist Malfunction (T1), Fuel Pump Module Failure, Sudden Loss of Electric Power Steering Assist / EPS Rack Failure (NHTSA Investigation). Of these, 7 are rated critical and should be addressed promptly.

Is the Chevrolet Silverado 1500 reliable?

The 2021 Chevrolet Silverado 1500 has 21 known issues documented across 6,243+ owner reports. 7 issues are rated critical: Brake Booster/Assist Malfunction (T1) and Fuel Pump Module Failure and Sudden Loss of Electric Power Steering Assist / EPS Rack Failure (NHTSA Investigation) and 6.2L L87 V8 connecting-rod/crankshaft bearing failure causing loss of propulsion (recall 25V274) and 2.7L TurboMax (L3B) lifter failure, intake-valve carbon buildup, and high oil consumption and 6.2L L87 V8 Connecting Rod / Crankshaft Failure (Loss of Propulsion Recall 25V274) and 3.0L Duramax 'Service Emission System' Limp-Mode From DEF/NOx Sensor Faults. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Chevrolet Silverado 1500 problems?

Repair costs for known Chevrolet Silverado 1500 issues range from $0 to $12,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Brake Booster/Assist Malfunction (T1), typically costs $500-$1,800 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2019-2023 Chevrolet Silverado 1500 Brake Booster/Assist Malfunction (T1)?

The T1 generation Silverado can experience brake assist malfunctions, causing a hard brake pedal, longer stopping distances, and warning lights. The electric brake booster or its sensors may be the cause. Repairs typically run $500-$1,800. Severity: high.

All 21 Known Issues

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Frequently Asked Questions

What are the most common Chevrolet Silverado 1500 problems?

Is the Chevrolet Silverado 1500 reliable?

How much does it cost to fix common Chevrolet Silverado 1500 problems?

What is the 2019-2023 Chevrolet Silverado 1500 Brake Booster/Assist Malfunction (T1)?

What is the 2019-2022 Chevrolet Silverado 1500 Fuel Pump Module Failure?

2021-2023 Chevrolet Silverado 1500: 6.2L L87 V8 connecting-rod/crankshaft bearing failure causing loss of propulsion (recall 25V274)#

2019-2025 Chevrolet Silverado 1500: 2.7L TurboMax (L3B) lifter failure, intake-valve carbon buildup, and high oil consumption#

2021-2024 Chevrolet Silverado 1500: 6.2L L87 V8 Connecting Rod / Crankshaft Failure (Loss of Propulsion Recall 25V274)#

2019-2024 Chevrolet Silverado 1500: 2.7L Turbomax (L3B) Cold-Start Rattle and Wastegate Actuator Wear#

2019-2023 Chevrolet Silverado 1500: Brake Booster/Assist Malfunction (T1)#

2019-2022 Chevrolet Silverado 1500: Fuel Pump Module Failure#

2014-2024 Chevrolet Silverado 1500: Sudden Loss of Electric Power Steering Assist / EPS Rack Failure (NHTSA Investigation)#

2020-2024 Chevrolet Silverado 1500: 3.0L Duramax 'Service Emission System' Limp-Mode From DEF/NOx Sensor Faults#

2014-2022 Chevrolet Silverado 1500: Service StabiliTrak / Service Traction Control / 'Reduced Engine Power' Cascade#

2019-2023 Chevrolet Silverado 1500: Infotainment Screen Freezing/Black Screen#

2019-2023 Chevrolet Silverado 1500: Auto Stop/Start Quits Working ('Auto Stop Unavailable') From Battery State-of-Charge Faults#

2019-2023 Chevrolet Silverado 1500: Bose Amplifier / Speaker Crackling, Static and No-Sound (Refreshed Cabin)#

2014-2022 Chevrolet Silverado 1500: Power Door Lock Actuator Failure (Buzzing/Clicking Door, Locks Stop Working)#

2015-2023 Chevrolet Silverado 1500: 8/10-Speed Transmission Shudder#

2015-2022 Chevrolet Silverado 1500: Transmission Overheating from Failed 8L90 Thermal Bypass Valve / Cooler-Line Leaks#

2007-2024 Chevrolet Silverado 1500: Catalytic Converter Theft Vulnerability (High Ground Clearance, Easily Accessed Converters)#

2007-2024 Chevrolet Silverado 1500: Broken Exhaust Manifold Bolts on 5.3L/6.2L V8 Causing Exhaust Tick and False P0420#

2021-2022 Chevrolet Silverado 1500: 3.0L Duramax (LM2) engine coolant control valve failure (GM Special Coverage N252508341)#

2007-2024 Chevrolet Silverado 1500: Water Pump Failure / Weep-Hole Coolant Leak on 5.3L and 6.2L V8#

2019-2022 Chevrolet Silverado 1500: Power Sliding / Rear Window Frame Cracking and Leaking From Body Flex#

2014-2021 Chevrolet Silverado 1500: Driveshaft Vibration / Slip Yoke Clunk#