Is my 2021-2024 Chevy Tahoe 6.2 part of the engine recall, and what do I do if it knocks?

Short answer: Many 2021-2024 Tahoes with the 6.2L V8 are under recall 25V274000 for connecting rod and crankshaft damage. If your Tahoe knocks, loses power or shuts off, stop driving and have it towed to a Chevy dealer. If your VIN is in the recall, the inspection and repair are free.

Symptom: A knocking or tapping noise, a check engine light, hesitation, high RPM or rough shifting, loss of power, the engine shutting off while driving, or no-start.

What to check first

1. Check your VIN at nhtsa.gov/recalls or with Chevrolet.
2. If you hear knocking, stop driving and arrange a tow.
3. Ask the dealer whether the recall inspection has been done and what the result was.
4. If the engine was replaced, check the build date sticker on the new engine.
5. Use the oil and cap the dealer specifies after the recall.

Likely causes

1. Connecting rod or crankshaft damage (recall 25V274000). The connecting rods link the pistons to the crankshaft. GM says debris or out-of-spec parts on some 6.2L engines can damage these parts, leading to knocking and engine failure.
2. Lifter failure. Lifters ride on the camshaft and open the valves. Owners heard a knock they thought was a lifter before the engine failed.
3. Low or wrong oil. Part of the recall remedy on engines that pass inspection is a switch to thicker 0W-40 oil with a new oil cap and filter.

What it usually costs

Owners in these threads got engines replaced under warranty or the recall. One owner outside warranty with a 2021 at 103k miles said a new engine was over $20,000.

Is it safe to keep driving?

No, if it knocks or has lost power. Owners had engines shut off at highway speed. If your VIN is open on the recall, get it inspected soon.

DIY or shop?

No. This is a dealer job.

Recalls, bulletins and complaints in plain words

• Recall 25V274000: NHTSA recall 25V274000 covers certain 2021-2024 Tahoe, Suburban, Silverado 1500, Sierra 1500, Yukon and Escalade models with the 6.2L V8. The connecting rods or crankshaft may be damaged, which can cause engine failure. The dealer inspects the engine and repairs or replaces it, or changes to 0W-40 oil with a new fill cap and filter. If your car is part of this recall, the dealer fixes it for free. Check your VIN at nhtsa.gov/recalls.
• Plain words: The complaint count below shows how often owners reported problems that mention these words to NHTSA. A count is not proof of a defect.
• NHTSA complaints: 621 keyword-matched complaints for Chevrolet Tahoe 2021–2024 (of 967 unique complaints queried, NHTSA complaints API by model year, queried 2026-11-05; keywords: engine, knock, rod, crank, lifter, stall, loss of power, lost power, seiz). This counts complaints that mention these words. It is not a defect finding.

What owners report

• In Engine noises right before shutting down while driving on Reddit r/ChevyTahoe, a 2022 Tahoe 6.2 owner heard a loud knock, and about 20 seconds later the engine shut off and wouldn't restart. It was towed to the dealer and got a new engine under warranty. Another owner's 2023 Tahoe 6.2 shut off on the interstate, and engines were backordered, so she drove a loaner for weeks.
• In Considering a 24 High Country with replacement engine on Reddit r/ChevyTahoe, a shopper looked at a 2024 Tahoe High Country whose original 6.2 failed and was replaced. Owners advised checking the build date on the replacement engine's sticker (on the driver's side of the block) to confirm it was built after the recall window. One owner said his replacement engine failed the recall test and needed another engine.
• In My experience with Four 6.2 L87 engines on Reddit r/gmc, an owner said their 2021 Tahoe lost power with no warning at about 60 mph on a rural highway at 29,000 miles, and that their family had gone through four L87 engines across two vehicles.
• In Recall issued today for L87 engine - 6.2L V8 on Reddit r/gmc, owners discussed the recall when it came out in April 2025. The remedy is an inspection, then either a new or repaired engine, or, if the engine passes, a switch to 0W-40 oil with a new oil fill cap and filter.

Quick tip

Get the recall inspection done, keep the paperwork, and don't ignore a new knock even after passing.

Vehicle focus: Chevrolet Tahoe 2021-2024 with the 6.2L V8 (L87). The same recall covers Suburban, Silverado 1500, Escalade, Sierra 1500 and Yukon.

Safety / mechanic note

An engine that shuts off at speed can leave you without power steering assist and can cause a crash. Verify with a mechanic.