6.2L L87 Engine Recall Repair Procedure | Dealer Steps

Why The 6.2L L87 Engine Recall Exists

The 6.2L L87 V8 sits in many high end Chevrolet, GMC, and Cadillac trucks and SUVs. When owners started reporting sudden loss of power, stalled engines, and loud bottom end noises, federal regulators and General Motors took a closer look at this engine family. That review uncovered defects in crankshafts and connecting rods that can damage the engine from the inside and cause loss of propulsion with little or no warning.

Those internal parts carry engine load every time you accelerate, tow, or cruise on the highway. If the metal is out of spec or contaminated during production, bearings can wear, surfaces can score, and oil flow can drop. Once that damage builds, the 6.2L L87 engine may start to knock, set a check engine light, or in the worst cases lock up while driving.

To reduce that risk, GM issued safety recall N252494000, tied to NHTSA campaign 25V274. The recall covers 2021–2024 model year vehicles with the 6.2L L87 engine and instructs dealers to inspect each engine, repair or replace damaged units, and update oil specs on engines that pass. The recall paperwork gives dealers a step by step path to decide which route each vehicle needs.

How To Confirm Your 6.2L L87 Recall Status

Before you plan any 6.2L L87 engine recall repair procedure visit, check that your truck or SUV is actually included. You can do this yourself in a few minutes with your vehicle identification number, or VIN.

1. Find your VIN — Look at the lower driver side corner of the windshield, the driver door jamb label, your registration card, or your insurance card.
2. Check the NHTSA recall tool — Go to the official recall lookup site and enter the VIN to see any open recalls, including the L87 engine loss of propulsion recall.
3. Use GM’s recall portal — GM’s owner site also shows open recalls when you plug in the VIN or sign in with an existing account.
4. Call your dealer’s service lane — Give them the VIN and ask whether the 6.2L L87 engine recall repair procedure applies and if any earlier recall work is already marked as complete.

If a recall appears, you should treat it as a safety item, not a routine service suggestion. Schedule the visit as soon as your dealer has parts and testing tools on hand. If you notice knocking noises, metal in the oil, reduced power, or any “engine power reduced” warning before the visit, park the vehicle and ask the dealer or roadside assistance for a tow instead of driving it.

6.2L L87 Engine Recall Repair Procedure At The Dealer

Once your appointment day arrives, the recall visit starts like any other dealer service stop but follows a defined script in the background. Service staff use internal systems, recall bulletins, and specific test equipment to handle each 6.2L L87 engine recall repair procedure the same way across the network.

Check In And Initial Review

During check in, the advisor confirms your contact details, walks through any symptoms you have noticed, and verifies that the recall applies to your exact VIN. Behind the counter, the dealer’s system checks for open bulletins such as N252494000, N252494001, N252494002, and any extended warranty coverage under N252494003 tied to your vehicle.

• Describe current symptoms — Mention any knocking sounds, stalls, smoke, warning lights, or past repairs related to the engine, even if they were handled under warranty.
• Confirm prior engine work — If your L87 engine was replaced once already, tell the advisor when and where that took place and provide receipts if you have them.
• Ask about transport — Ask early whether a loaner, shuttle, or rental is available if the inspection shows engine damage and the vehicle needs to stay for days or weeks.

Inspection Path Under The Recall

After check in, a technician brings the vehicle into the bay and starts the recall inspection. Exact steps vary by bulletin and tool availability, but they usually follow one of two broad paths: engines that show damage or risk, and engines that pass testing.

Inspection Result	Dealer Action	Owner Cost
Engine damage, noise, or code P0016 found	Replace the complete 6.2L L87 engine under recall or special coverage	No charge for parts or labor when covered by the recall
No internal damage found in testing	Change to 0W-40 oil, install new oil cap, replace oil filter, and add owner manual insert	No charge for recall work; later oil changes may cost more
Previous replacement engine built before updated date	Inspect build data and replace the engine again if it falls in the risk window	No charge for eligible recall or extended coverage repairs

Each of these paths comes from detailed bulletins that only dealers can access. The idea stays simple though. If the 6.2L L87 engine shows any sign of crankshaft or connecting rod defects, it should come out and be replaced. If tests show a healthy engine, the dealer updates its oil spec to a thicker grade to give more margin against bearing or crank wear.

What Technicians Do During The L87 Recall Repair

From the waiting area the process may look slow, yet a lot happens in the bay during this recall repair. Technicians follow a step list inside GM’s service information system so that every inspected engine meets the same standard.

Diagnostic Checks And Engine Inspection

1. Scan for stored trouble codes — The tech checks for codes like P0016 and any misfire or oil pressure faults that point toward internal damage.
2. Listen for abnormal sounds — With the engine running, they listen near the oil pan, bellhousing, and front cover for deep knocks or rattle that change with RPM.
3. Review oil condition — Some bulletins call for an oil change and filter cut, where the filter is opened and checked for metal flakes or bearing material.
4. Check build dates — If the engine has been replaced before, the technician checks casting and serial data to see whether it was built before GM’s updated production cut off.

If any of these checks point toward internal damage, the technician documents findings with photos and notes, then requests authorization to order a replacement engine. That replacement arrives as a long block or complete assembly, depending on GM’s parts structure, and is installed using standard engine swap procedures with fresh gaskets, fluids, and torque values.

Oil Update Path For Engines That Pass

When an engine passes the recall inspection, technicians still make changes that protect it going forward. For vehicles covered by the inventory bulletin, and often for customer owned vehicles once parts and guidance roll out, the recall repair includes an oil update.

• Drain the factory fill — The shop drains the existing 0W-20 oil and installs a fresh oil filter.
• Add 0W-40 oil — The refill uses a higher viscosity 0W-40 dexos approved oil that can better protect loaded bearings at temperature.
• Install a new oil cap — The technician replaces the oil fill cap with a new piece labeled for 0W-40 so later services match the new spec.
• Insert owner manual update — Dealers add a printed insert or label that tells later owners about the new oil grade and any special notes.

This path feels less dramatic than a full engine swap, yet it still matters. An oil grade that holds film strength under high load gives more cushion against any minor surface or bearing issues that passed early inspection.

Timeline, Cost, And Transportation During Recall Repair

Owners often care less about the torque spec on a connecting rod and more about how long the 6.2L L87 engine recall repair procedure keeps their truck off the road. Timing can vary a lot from one dealer or region to another, so it helps to know the rough ranges and what you can ask for.

How Long The Recall Visit May Take

• Inspection only visits — If your dealer has the required tools open and no queue, inspection plus an oil update can finish in one to three days from drop off.
• Engine replacement jobs — When tests show damage, dealers must order a replacement engine, wait for delivery, swap it in, and check for leaks and codes. That can stretch from several days to a few weeks.
• High demand periods — In areas with many 6.2L L87 trucks on the road, dealers may schedule recall tests weeks out or limit how many they can handle per day because there is only one test rig or specialist on staff.

Try to book the visit during a stretch when you can spare the vehicle, and ask the advisor about typical lead times at that location. If you depend on the truck for work or towing, say so clearly so they can note it when they plan shop time.

What You Pay And How Recall Coverage Works

Under federal rules, recall repairs linked to safety defects must be free to owners. GM’s bulletins back this up by listing the recall work as no charge to the customer for both labor and parts. That includes the inspection time, the oil change and cap update, and a full engine replacement when testing points toward internal damage.

• Core recall work — You do not pay for the recall inspection, oil change, cap swap, or replacement engine when the VIN shows an open recall.
• Related damage from the defect — In many cases, damage caused directly by the failed engine parts is also covered during the same visit.
• Extra maintenance items — Dealers may suggest other services due by mileage. You can approve or decline those, and they are billed separately from recall work.

For many owners, bulletin N252494003 also extends warranty coverage for engine failures tied to this defect out to ten years or 150,000 miles. That extended coverage can help even after the core recall repair is complete, especially if a replacement engine later shows problems.

After The 6.2L L87 Engine Recall Repair

Once you pick up your truck or SUV after an L87 engine recall repair visit, your focus shifts from diagnosis to long term care. A bit of extra attention during the next few thousand miles can help you catch any issues early and show that you did your part if later warranty questions come up.

If Your Engine Was Replaced

1. Follow break in guidance — Drive gently for the first few hundred miles, avoid full throttle runs or heavy towing, and vary road speed so the new engine beds in under different loads.
2. Watch gauges and sounds — Keep an eye on oil pressure, coolant temperature, and listen for any new knocks, rattles, or whistles that appear after the swap.
3. Keep all paperwork — Store copies of the repair order, parts list, and any warranty extension leaflets in a safe place at home rather than the glove box.
4. Plan early oil service — Ask the service advisor whether the new engine needs an early oil change, and if so, mark that mileage on a calendar or in a notes app.

If Your Engine Passed And Received An Oil Update

• Confirm the new oil spec — Check the new cap and the manual insert so you know the exact 0W-40 grade and dexos rating required at your next oil change.
• Talk with your shop about cost — Higher viscosity synthetic oil can raise each oil change bill, so ask for a quote and work it into your maintenance budget.
• Watch for new symptoms — If you later notice fresh noises, vibration, or any loss of power, schedule a return visit right away and mention the prior recall work.

In both cases, save digital copies of invoices, letters, and recall notices. If the 6.2L L87 engine shows more trouble later, those documents will help your dealer, GM, or an attorney confirm dates, mileages, and exact repair steps already taken.

Staying Informed About The 6.2L L87 Engine Recall

This recall is not a one day story; regulators and GM continue to track 6.2L L87 engine failures even after repair campaigns roll out. NHTSA has expanded its investigation to cover possible post recall failures, and GM has issued multiple bulletins as it refines inspection tools, repair thresholds, and oil guidance.

Check the NHTSA and GM recall lookup tools from time to time, especially if new noises show up or fresh news breaks about the 6.2L L87. Sign up for email alerts from NHTSA or GM if you prefer direct updates. Stay in touch with your dealer as well, since service departments often receive new instructions or extended coverage bulletins before owners get a fresh letter in the mail.

If you ever feel unsafe driving due to noises, warning lights, or sudden power loss, pull over as soon as it is safe, shut the engine off, and call for help. The L87 engine recall repair work is there to reduce that risk, and the sooner issues are checked, the better your odds of a clean repair and a long service life from your truck or SUV.