2022 Used GMC Engines For Sale

25
verified 2022 GMC engines
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Customer Reviews
Up to 3 yrs
extended warranty available
Photos before
shipment

2022 Used GMC Engines For Sale

25 verified used 2022 GMC engines in stock, every one matched by RPO option code and the 8th VIN digit before it ships — the 6.6L L8T gas big block and the 6.6L L5P Duramax in the Sierra HD, the 5.3L L84 and 6.2L L87 EcoTec3 V8s, the 2.7L L3B TurboMax four in both the new-body Sierra 1500 and the carryover Sierra 1500 Limited, and the 2.8L LWN Duramax four in the Savana. Free freight, photos before we ship, 30 days to return.

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Warranty On Every Unit
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Photos Before Shipment
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ASE-Tested & Verified
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Free Nationwide Shipping
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30-Day Money-Back
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Secure SSL Checkout

2022 GMC Engine Families

Which engine sits under which 2022 GMC, and how many of each we hold today.

Engine family Fits (2022) In stock
6.6L L8T Gas V8 (Big Block) Sierra 2500 HD, Sierra 3500 HD, Savana 2500, Savana 3500 — gasoline, VIN 7 4
2.7L L3B TurboMax Four Sierra 1500 and Sierra 1500 Limited, Classic Style and New Style bodies — VIN K 4
5.3L L84 EcoTec3 V8 Sierra 1500, Sierra 1500 Limited, Sierra Denali 1500 — VIN D 3
3.6L LGX V6 Acadia, with and without Opt V08 heavy-duty cooling — VIN S 2
2.8L LWN Duramax Four (Diesel) Savana 2500 and Savana 3500 — VIN 1 2
4.3L LV1 V6 Savana 2500 and Savana 3500 — VIN P 2
1.5L LYX Turbo Four Terrain, FWD and AWD — VIN V 2
2.0L LSY Turbo Four Acadia — VIN 4 1
2.5L LCV Four Canyon 4x2 — VIN A 1
3.6L LGZ V6 Canyon — VIN N 1
3.0L LM2 Duramax Six (Diesel) Sierra 1500 Limited — VIN T 1
6.2L L87 EcoTec3 V8 Sierra 1500 Limited — VIN L 1
6.6L L5P Duramax V8 (Diesel) Sierra 3500 HD — diesel, VIN Y 1
Total 25

Other GMC Model Years

Every model year we hold GMC engines for. Years without a link are in stock but have no year page yet — text us your VIN.

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Why Buy a 2022 GMC Engine from Auto Power Source

2022 is the year GMC sold two different Sierra 1500s at the same time. The new-body truck is listed as Sierra 1500; the carryover previous-generation truck is listed as Sierra 1500 Limited, and both were built new that model year. Our listings also carry the Classic Style and New Style split inside the 2.7L L3B TurboMax four, because the same RPO code was fitted to both bodies with different accessory and mounting detail. The RPO code tells you the engine; the body split tells you whether it will bolt in.

The two 6.6L V8s on the 2022 Sierra HD share a displacement and nothing else. The L8T is a gasoline big block (VIN 7) and it also appears in the Savana 2500 and 3500; the L5P is the Duramax turbo-diesel (VIN Y). Both are printed as “6.6L”. The same trap sits on the 3.6L V6: LGX is the Acadia engine, LGZ is the Canyon engine, and they are not the same part. On the diesel side the Sierra 1500 Limited takes the 3.0L LM2 Duramax inline-six, while the Savana vans take the 2.8L LWN Duramax four.

Denali is a trim, not a drivetrain — a Sierra Denali 1500 takes the same 5.3L L84 as an SLE, so we list them together and let the RPO code decide. Every unit here is used OEM pulled from a low-mileage donor vehicle, cataloged against its VIN, compression-tested and leak-down evaluated by ASE-certified technicians, photographed for your approval, and shipped free on a pallet with 30 days to return it.

📱 Fastest way to match: text us your VIN, get options in minutes.Text Your VIN →

Your 2022 GMC Engine Options: Compared

Most 2022 GMC owners face four real choices when the engine fails:

← Swipe sideways to see all columns →
Option Cost Reliability Warranty Fitment Match
Used OEM (this collection) $$$ Best Value High — tested Included VIN-matched
New OEM (dealer) $$$$$ 2-4× more High Manufacturer Exact
Aftermarket / Reman $$$$ Varies 6-12 mo May adapt
Junkyard $ Cheapest Unknown None DIY

Tested used OEM hits the sweet spot — same engineering as new, fraction of the cost.

2022 GMC Engine Buying Guide

5 things to verify before buying a used 2022 GMC engine:

  1. Settle which 6.6L you need before anything else. The L8T is the gasoline big-block V8 (VIN 7); the L5P is the Duramax turbo-diesel (VIN Y). Both appear as “6.6L” on a 2022 Sierra 2500 HD or 3500 HD. They share no parts and no mounting.
  2. Know whether your truck is a Sierra 1500 or a Sierra 1500 Limited. GMC built both in 2022 — the new body and the carryover body. The 2.7L L3B is listed in Classic Style and New Style versions for exactly this reason, so the body split has to be settled alongside the engine code.
  3. The two 3.6L V6s are different engines. LGX (VIN S) is the Acadia unit, and it is further split by Opt V08 heavy-duty cooling. LGZ (VIN N) is the Canyon unit. Same displacement, separate part numbers.
  4. Read the RPO code, not just the displacement. GMC identifies 2022 hardware by option code — L3B, L84, L87, L8T, L5P, LM2, LWN, LV1, LYX, LSY, LCV, LGX, LGZ. The code appears on the service parts identification label and is the fastest way to confirm what came out of your vehicle.
  5. Confirm the match with your own VIN before you order. Your VIN settles the engine code, drivetrain and body split in one step. Text it to +1-307-441-5554 and we will confirm in writing exactly which unit fits your vehicle before you pay.

Our ASE-certified technicians verify every one of these points against your VIN before any unit ships.

📞 Need help choosing the right 2022 GMC engine? Talk to our team live.Call 1-877-313-8995

Frequently Asked Questions

What is the warranty on a used 2022 GMC engine?
Every 2022 GMC engine ships with a warranty included, printed on each product page. Extended coverage of up to 3 years is available at checkout.
What does ASE-tested mean?
ASE-certified technicians compression-test every cylinder and run a leak-down evaluation, then noise and smoke verification, a full visual inspection, and multi-angle photography before shipment.
How long until delivery?
Prep and ship is 3-5 business days, transit 2-3 business days after dispatch by freight carrier.
Can I see photos before I buy?
Yes. Multi-angle photos of the actual unit are sent before payment. If you do not approve them, you get every dollar back.
Do I need my VIN?
Yes. On a 2022 GMC the 8th digit separates the 6.6L L8T gas V8 from the 6.6L L5P Duramax, and the 3.6L LGX from the 3.6L LGZ. It also settles whether your truck is a Sierra 1500 or a Sierra 1500 Limited. Text your VIN to +1-307-441-5554.
Which 2022 GMC models do you stock?
Sierra 1500, Sierra 1500 Limited and Sierra Denali 1500, Sierra 2500 HD and 3500 HD, Savana 2500 and 3500, Terrain, Acadia and Canyon.
Why cheaper than dealer new?
Used OEM from low-mileage donor vehicles — the same GM engineering and the same RPO-coded hardware, at a fraction of a new crate price.
When can I reach customer service?
Call 1-877-313-8995 or text +1-307-441-5554 during the hours in the site footer, or email info@autopowersource.com.
🏆 Earn $500 with Our Rewards Program
Every GMC engine you buy earns rewards. 10 orders (yours or referred) = $500 cash credit. Silver, Gold, and Platinum tiers with discounts, priority support, and private inventory access.
See How Rewards Work →
100K+
Engines+Transmissions In Stock
0%
fitment-related returns
All 50
states covered, free freight
36
brands covered

Our 6-Step Inspection & Shipping Process

Every 2022 GMC engine we ship has been through these six steps:

1. VIN-Matching
We match the donor VIN to your VIN to confirm engine code, generation, emissions calibration, and drivetrain fit.
2. Tested & Verified
ASE-certified technicians compression-test every cylinder and run leak-down evaluation on engines. Transmissions are Shift-Tested through all gears.
3. Noise & Smoke Verification
Units are run to verify normal mechanical sound and clean operation — catches internal wear static tests miss.
4. Visual Inspection
Every accessible component is inspected: turbos, manifolds, valve covers, AFM/DFM lifters, accessories, sensor harnesses.
5. Photograph & Catalog
Multi-angle photos sent to you BEFORE we ship for your approval.
6. Palletize & Ship
Strapped on a heavy-duty wooden pallet, shipped via freight at no charge.

Our Photos-Before-Shipment Guarantee

Before any engine leaves our warehouse, we send you multi-angle photographs. You approve. If you do not approve, you get every dollar back — no questions, no restocking fees, no return freight charges. On top of 30-day money-back and the warranty included with every unit. Browse all 25 2022 GMC engines below.

✉ Email Us at info@autopowersource.com
No match? Text VIN →