8-Speed Automatic Transmission Assembly for 2020-2023 Chevrolet Camaro
Product Notes Read before buying
This is an 8-speed automatic transmission (GM RPO code 8L45) for models equipped with the 2.0L 4-cylinder turbocharged engine.
Voice or type your vehicle details and Wrenchy will confirm fitment in seconds.
Vehicle Fitment Guide
This part fits the following vehicles:
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| LS | Coupe | 2020 - 2023 | L4 2.0L Turbo | RWD | Automatic |
| LT | Convertible | 2020 - 2023 | L4 2.0L Turbo | RWD | Automatic |
| LT | Coupe | 2020 - 2023 | L4 2.0L Turbo | RWD | Automatic |
| 2021 - 2022 |
Know This Transmission Before You Buy
The research behind our purchase interview — recalls, bulletins and real install economics for this transmission family:
A quick look at your own vehicle makes sure the right transmission shows up:
- Confirm the 8th digit of the VIN is 'X' (2.0L Turbo LTG engine).
- Confirm RPO code M5T on the Service Parts Identification label.
- Verify the current transmission case barcode label identifies as an 8L45.
What the install really takes — plan and budget with confidence:
Special tools this job needs:
- Transmission jack
- Fluid fill adapter / fluid transfer pump
- GM GDS2 compatible scan tool
Budget for these consumables at install:
- Mobil 1 Synthetic LV ATF HP (Blue Label, GM Part No. 19417577)
- Transmission filter (GM Part No. 24274616 or TF922)
- Pan gasket (GM Part No. 24260071)
- Torque converter hub seal
- Rear output shaft seal
- Aerosol cooler line flush (e.g., Lubegard Kooler Kleen)
What your vehicle’s computers will need after the swap:
What’s involved: VIN-specific programming, Solenoid Characterization (TUN/PUN programming), and TCM Adaptive Relearn (Service Fast Learn)
The TCM is external and must be programmed with the replacement transmission's Transmission Unique Number (TUN) and Part Unique Number (PUN) using GM's Service Programming System (SPS2) to prevent extremely harsh shifts and immediate internal damage. A Transmission Service Fast Learn using a GM GDS2 compatible scan tool is also strictly required to reset clutch-volume and spring-rate adaptives.
Pro tips for a smooth first start-up — hand them to whoever does the install:
- Torque Converter Seating: Ensure the torque converter is fully seated (three distinct clicks) before bolting to the engine. Forcing the bellhousing bolts will instantly crack the front pump rotor.
- Bottom-Fill Fluid Procedure: There is no dipstick. Fluid level must be checked via the bottom standpipe plug with the engine running and fluid temperature strictly between 95°F and 113°F.
- TCM Adaptive Drive Relearn: Skipping the GDS2 Fast Learn and adaptive drive relearn will cause violent shifting and permanent clutch damage within miles.
- Thermal Bypass Valve: Inspect, clean, or replace the thermal bypass valve on the cooler lines to prevent overheating.
- Dowel Pins: Ensure engine-to-transmission alignment dowel pins are present and clean to avoid pump failure.
Easy to get right once you know them:
- Using the wrong fluid (standard Dexron VI or cheap multi-vehicle ATF instead of Mobil 1 Synthetic LV ATF HP Blue Label).
- Skipping the TUN/PUN Solenoid Characterization and GDS2 Fast Learn programming.
- Failing to thoroughly flush the transmission cooler lines, which washes old debris into the replacement unit's sensitive solenoids.
- Forcing the bellhousing bolts when the torque converter is not fully seated, cracking the pump.
Not issues with the units on this page — the manufacturer documented these for every transmission of this family, wherever you buy one. Handy for your installer:
🔎 Recommended at install: Complete system flush using the updated Mobil 1 Synthetic LV ATF HP (Blue Label) fluid. If ignored too long, the torque converter must be replaced.
🔎 Recommended at install: Install updated stator support and case cover to prevent drain-back.
🔎 Recommended at install: TCM software update, resetting adaptive shift values, and performing a specific drive relearn procedure.
Researched from factory recalls, TSBs and OEM service data (reference unit 400-11494-5260503). Unit-specific details — mileage, condition, warranty, freight — are covered in the checkout interview.
Policies, in plain English.
Shipping & Handling
- Ships by LTL freight on a pallet — a real freight truck, not a parcel van
- Your checkout freight quote covers delivery to your door (liftgate service included for residential addresses)
- The carrier calls ahead to schedule a delivery window — someone must be present to receive it
- Typically palletized and picked up within 2–3 business days; transit time depends on distance
120-Day Warranty
This part includes a 120-day warranty.
- If the part fails within the warranty window, we'll replace it or refund per the coverage terms
- Coverage is parts-only — installation labor is not included
- Warranty covers defects — not installation errors, misuse, or damage after installation
Your pre-purchase interview reviews these exact terms with you before anything is charged.
Returns (30 Days)
We accept returns of uninstalled parts within 30 days of delivery for this part.
- Defective parts: We will replace the part or issue a refund at our discretion
- Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
- Return shipping: This part ships by freight (LTL) — the part price is refundable per the terms above, but shipping costs are non-refundable and return freight follows the seller's return terms. Your pre-purchase interview walks through the exact numbers before you buy
- Parts must be returned in original packaging and unmodified condition
- Poorly packaged returns that arrive damaged will not be credited
Damaged in Shipping?
Freight damage is rare — and you're fully protected when you do two things at delivery:
- Inspect before you sign — you're allowed time to look the pallet over while the driver waits
- Write any damage on the delivery receipt before signing — that one line is what makes a freight claim succeed
- Severe damage? Refuse the delivery — it goes back at no cost to you and we make it right
- Photograph the pallet before unwrapping; report concealed damage within 24 hours of delivery
We handle the carrier claim — you just help document it. Your pre-purchase interview walks through this checklist too.
Order Cancellation
Cancel before shipment for a full refund. Once the pallet has been built, a preparation charge may apply — and once the freight carrier picks it up, shipping costs are non-refundable and standard return terms apply. Your pre-purchase interview shows the exact numbers before you pay.
Expert Guides
2020-2023 Chevrolet Camaro 2.0L Turbo Transmission: Problems, Identification, and Used Replacement
Identify whether your Camaro has the 8L45 or 10L60, learn what causes torque converter shudder, and know when to replace it with a used OEM unit.
Read Full Guide →Related Trouble Codes (OBD-II)
5 matching guidesIf your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.
Miscellaneous Information
OEM Part Numbers:
GM: 19434560, 24286927, 24286928, 24290644
Other: 1TBL, 1TDL
Fits Years: 2020 2021 2022 2023
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Backed By The Selling Yard
This unit ships with the selling yard's 120-day warranty. Longer plans can be requested during checkout.
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