# 2020 Silverado Engine Lifter Ticking Noise Diagnosis & Fix > ClearTheCode — Hearing a 2020 Silverado engine lifter ticking? Learn common causes, how to diagnose the issue, and potential repair options to quiet your V8 engine. Source: https://clearthecode.com/articles/engine-lifter-ticking-noise-chevrolet-silverado-2020 Author: ClearTheCode # 2020 Silverado engine lifter ticking Is your 2020 Chevrolet Silverado's V8 engine producing an unsettling ticking noise? Many owners of the 2020 Silverado, particularly those with the 5.3L or 6.2L V8 engines featuring Active Fuel Management (AFM) or Dynamic Fuel Management (DFM) systems, report a distinct metallic ticking sound. This noise often indicates an issue with the hydraulic roller lifters, which are critical components for valve operation. Addressing a 2020 Silverado engine lifter ticking noise promptly can prevent more extensive and costly engine damage. ## What drivers notice on this 2020 Chevrolet Silverado Drivers of the 2020 Chevrolet Silverado typically first notice a rhythmic, metallic ticking or tapping sound emanating from the engine bay. This noise can vary in intensity and frequency depending on several factors: - **Cold Start:** The ticking might be more pronounced immediately after a cold start, potentially quieting down slightly as the engine warms up and oil pressure stabilizes. - **Engine Temperature:** In some cases, the ticking becomes more noticeable once the engine reaches operating temperature, especially during idle or light acceleration. - **Engine Speed:** The ticking sound often increases in frequency with engine RPM, indicating a component directly linked to engine rotation. - **Location:** The sound can sometimes be isolated to one side of the engine, which can help pinpoint the affected cylinder bank. - **Associated Symptoms:** While often just a noise, a severely failed lifter can lead to engine misfires, a rough idle, reduced engine power, and potentially trigger a "Check Engine" light. ## At a glance: difficulty, repair cost, and diagnostic workflow - **Difficulty Rating:** 6/10 — Moderate - **Common Symptoms:** Persistent Metallic Ticking: A distinct, rhythmic tap or click that doesn't disappear after the engine warms up.; Engine Misfires: If a lifter completely collapses or sticks, it can prevent a valve from opening or closing correctly, l; Rough Idle: The engine may feel rougher than usual, especially at idle, due to inconsistent valve operation.; Reduced Engine Performance: You might notice a decrease in acceleration or overall power, particularly under load. - **Estimated Repair Cost:** $100–$900 (parts + typical shop labor) - **OEM Tooling Required:** Standard OBD-II scanner and hand tools **Diagnostic workflow:** 1. Confirm the symptom on your 2020 Chevrolet SILVERADO. 2. Scan for stored or pending codes with an OBD-II tool. 3. Inspect the most common causes in this guide (visual checks first). 4. Run verification tests before replacing parts. 5. Repair, clear codes, and verify on a test drive. Browse the [model repair hub](/vehicles/chevrolet/silverado) and [make hub](/vehicles/chevrolet) for related guides. ## Symptoms and warning signs Beyond the primary ticking sound, a failing hydraulic lifter in your 2020 Silverado can manifest in several ways: - **Persistent Metallic Ticking:** A distinct, rhythmic tap or click that doesn't disappear after the engine warms up. - **Engine Misfires:** If a lifter completely collapses or sticks, it can prevent a valve from opening or closing correctly, leading to a cylinder misfire. This will often trigger a P030X diagnostic trouble code. - **Rough Idle:** The engine may feel rougher than usual, especially at idle, due to inconsistent valve operation. - **Reduced Engine Performance:** You might notice a decrease in acceleration or overall power, particularly under load. - **Check Engine Light (CEL):** A misfire will almost always illuminate the CEL. Other related issues, like low oil pressure, could also trigger it. - **Oil Pressure Warning Light:** In rare but severe cases, a lifter issue contributing to low oil pressure could trigger the oil pressure warning light. ## How to verify and confirm the issue Verifying a 2020 Silverado engine lifter ticking issue involves a combination of auditory, visual, and diagnostic tool checks: - **Auditory Inspection:** Use a mechanic's stethoscope to pinpoint the exact location of the ticking noise. Listen along the valve covers on both sides of the engine. A lifter tick is usually loudest directly over the affected cylinder's valve cover. - **Oil Level and Quality Check:** Ensure your engine oil is at the correct level and is clean. Low or dirty oil can contribute to lifter noise. Check for any metallic flakes in the oil, which could indicate severe wear. - **Oil Pressure Monitoring:** Connect an oil pressure gauge or use a scan tool to monitor live oil pressure data. Low oil pressure, especially at idle, can starve lifters of lubrication and cause noise. - **Scan Tool Diagnostics:** - Check for **Diagnostic Trouble Codes (DTCs)**, specifically misfire codes (P0300, P0301-P0308). If a misfire is present, it can help narrow down the affected cylinder. - Monitor **engine live data**, including fuel trims, engine RPM, and cylinder contribution tests, if available on your scanner. A cylinder contribution test can help identify which cylinder is underperforming. - **Cylinder Drop Test (Advanced):** If a misfire is present, you can perform a cylinder drop test (disabling injectors one by one) to see if the ticking noise changes or disappears when the faulty cylinder is deactivated. This can help confirm which lifter is causing the issue. - **Valve Cover Removal (Confirmatory):** The definitive way to confirm a collapsed or worn lifter is to remove the valve cover on the suspected side. Visually inspect the rocker arms and valve springs. A collapsed lifter will have excessive play in the rocker arm, or you might see a valve that isn't opening fully. ## Common causes (most likely first) The 2020 Chevrolet Silverado's V8 engines, particularly those with AFM/DFM, are prone to specific lifter-related issues: - **Collapsed or Stuck Hydraulic Roller Lifters (AFM/DFM related):** This is the most prevalent cause. The hydraulic lifters, especially those responsible for cylinder deactivation, can fail to pump up with oil, causing them to collapse. This results in excessive clearance and a ticking noise. Over time, the roller on the lifter can also wear or seize. - **Low Engine Oil Pressure:** Insufficient oil pressure prevents the hydraulic lifters from fully extending and maintaining proper valve lash, leading to noise. This can be due to a faulty oil pump, clogged oil pick-up tube, or worn engine bearings. - **Improper Oil Viscosity or Contaminated Oil:** Using the wrong type or viscosity of engine oil, or having severely contaminated oil, can hinder lifter operation and lead to noise. Ensure you're using the manufacturer-recommended oil (e.g., Dexos-approved 0W-20). - **Worn Camshaft Lobes:** A collapsed lifter can sometimes lead to accelerated wear on the corresponding camshaft lobe. If the lobe is worn flat, the valve lift will be reduced, and the lifter will make noise even if it's otherwise functional. - **Debris in Oil Passages:** Small metal shavings or sludge can block the tiny oil passages that supply oil to the lifters, causing them to starve for lubrication. ### Related guides on this vehicle - [2018 Silverado Lifter Noise: Diagnosis & Fixes](/articles/engine-lifter-ticking-noise-chevrolet-silverado-2018) - [P0011 2024 Lexus Gx: Intake Camshaft Timing Over-Advanced](/articles/p0011-lexus-gx-2024-diagnostic-guide) - [2017 Hyundai Accent: Engine Codes P0420 & Gas Cap Light Fix](/articles/engine-codes-new-gas-cap-2017-hyundai-accent) ## Step-by-step diagnosis and fixes Addressing a 2020 Silverado engine lifter ticking requires a methodical approach: 1. **Check Oil Level and Condition:** Start by ensuring the engine oil is at the full mark and appears clean. If it's low, top it off. If it's dirty, perform an oil and filter change using the correct Dexos-approved oil for your 2020 Silverado. Sometimes, a fresh oil change can quiet minor lifter noise. 2. **Monitor Oil Pressure:** Use a scan tool or external gauge to check actual oil pressure. Compare it to specifications. If pressure is low, investigate the oil pump, oil pick-up tube screen, or oil pressure sensor. 3. **Scan for Codes:** Use an [OBD-II scanner](/codes) to check for any stored or pending diagnostic trouble codes, especially misfire codes (P030X). 4. **Identify Noisy Cylinder:** Use a mechanic's stethoscope to pinpoint the exact cylinder bank or even individual cylinder where the ticking is loudest. 5. **Cylinder Deactivation Test (if applicable):** If your scan tool supports it, you might be able to manually deactivate cylinders one by one to see if the ticking changes or stops. This can help isolate the problematic lifter. 6. **Valve Cover Removal:** Once a cylinder bank is suspected, remove the valve cover. Inspect the rocker arms for excessive play. A collapsed lifter will have noticeable vertical movement in its rocker arm when the valve is closed. 7. **Inspect Lifters and Camshaft:** If a collapsed lifter is confirmed, the cylinder head will need to be removed to access the lifters. While the head is off, thoroughly inspect the camshaft lobes for wear. A worn lobe necessitates camshaft replacement along with new lifters. 8. **Replace Affected Components:** Replace all affected lifters (often recommended to replace all lifters on the affected bank, or even all 16, especially if AFM/DFM is involved). If the camshaft is damaged, it must also be replaced. Consider an AFM/DFM delete kit if you want to prevent future lifter failures related to cylinder deactivation, though this is a more involved modification. ## Repair options and cost factors The cost to repair a 2020 Silverado engine lifter ticking can vary significantly based on the extent of the damage and the chosen repair path: - **Oil Change/Flush:** If the issue is minor and related to oil quality, a simple oil change ($50-$150) might help. An engine flush ($100-$300) might be attempted, but success is not guaranteed. - **Lifter Replacement (Single Bank):** If only a few lifters on one bank are affected, replacing them, along with new head gaskets, can range from $1,500 to $3,000. This involves significant labor to remove the cylinder head. - **Lifter and Camshaft Replacement (Single Bank):** If the camshaft is also worn, the cost increases due to the additional parts and labor for camshaft removal and installation. This can push costs to $2,500 to $4,500. - **Full Lifter and Camshaft Replacement (All 16 lifters/both banks):** This is the most comprehensive repair, often recommended for long-term reliability, especially if multiple lifters are failing. Costs can easily exceed $4,000 to $6,000+, as it involves extensive engine disassembly. - **AFM/DFM Delete Kit:** Some owners opt to install an AFM/DFM delete kit during lifter replacement. This involves new non-AFM lifters, a non-AFM camshaft, and often a custom ECU tune. This adds to the parts cost but can prevent future AFM-related failures. This is a more involved and costly option, often adding $1,000-$2,000+ to the repair. Labor is the primary cost factor, as lifter replacement is a labor-intensive job requiring many hours of skilled work. ## When to see a professional While some basic troubleshooting steps can be performed by a DIY enthusiast, a 2020 Silverado engine lifter ticking often warrants professional attention due to its complexity: - **Persistent Noise:** If the ticking persists after checking oil levels and performing an oil change. - **Misfires or CEL:** If your Check Engine Light illuminates or you experience noticeable engine misfires. - **Lack of Specialized Tools:** Accessing and replacing lifters requires specific engine tools, including a valve spring compressor, torque wrenches, and potentially engine timing tools. - **Diagnostic Uncertainty:** If you're unsure about the exact cause or location of the noise. - **Complex Engine Work:** Lifter and camshaft replacement involves significant engine disassembly and precise reassembly, which is best left to experienced technicians. For more information on general repair guides, you can visit our All repair guides section. To explore other issues specific to your model, check out our [Silverado model hub](/vehicles/chevrolet/silverado). ## Frequently asked questions ### Can I drive my 2020 Silverado with a ticking lifter? Driving with a ticking lifter is generally not recommended, especially if the ticking is loud or accompanied by misfires or reduced power. A collapsed lifter can lead to accelerated wear on the camshaft, pushrod, and rocker arm, potentially causing more severe engine damage or even catastrophic failure if the lifter roller seizes or breaks apart. ### Is a ticking noise in a 2020 Silverado always a lifter issue? While a persistent metallic ticking is often indicative of a lifter problem in the 2020 Silverado V8 engines, it's not the only possibility. Other potential sources of ticking could include exhaust leaks, fuel injector noise, loose spark plugs, or even a failing accessory. Proper diagnosis using a stethoscope and scan tool is crucial to confirm the source. ### How can I prevent lifter issues in my 2020 Silverado? Regular and timely oil changes using the manufacturer-recommended Dexos-approved oil (e.g., 0W-20) are paramount. Ensuring the correct oil level is maintained is also critical. Some owners also consider using an aftermarket oil catch can to reduce oil consumption and carbon buildup, which can indirectly help prevent lifter issues related to the AFM/DFM system. Learn more about [Chevrolet vehicles](/vehicles/chevrolet) and their specific maintenance needs. ## Sources and further reading This information is intended for educational purposes and is not a substitute for OEM service procedures. Always consult a qualified technician for safety-critical work and specific vehicle diagnostics.