Buy Rebuilt Cadillac CT5 Engines - 12m Warranty with Supply & Fit
Compare CT5 engine prices. Rebuilt LSY/LT4 units for Alpha 2 chassis (1G1/1G2, 2019 - 2023) with 12m Unlimited Mileage Warranty from UK suppliers.
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Cadillac CT5 Specialists
Expert Solutions for Every CT5 - Luxury to CT5-V Blackwing
Need a reliable replacement engine for your Cadillac CT5?
Engine Finders specializes in CT5 engines with solutions for common LSY and LTG turbocharger wastegate failures.
- ✔ CT5-Specific Engine Types - Including LSY 2.0L turbo and LTG 3.6L V6 with updated wastegate actuators
- ✔ Precision-Tuned for CT5 - Correct calibration for GM’s Active Fuel Management and cylinder deactivation
- ✔ CT5 Pricing Advantage - Save up to £1,200 on common turbo-related repairs with pre-tested units
Cadillac CT5 Replacement Engines Options - Verified Units (UK Supply)
All engines bench-tested, VAT-inclusive, with 12-month warranty. MoT-compliant. Nationwide delivery. Direct OEM fitment for CT5 (Alpha 2 platform, chassis codes: 1G1, 1G2).
Includes updated timing chain components for LSY/LT4 V6 reliability.
Full disassembly and rebuild to GM Alpha 2 platform specs.
Restored with new gaskets and oil pump for LSY V6 integrity.
Plug-and-play units for CT5 (Alpha 2) with verified compression.
Performance-tuned with updated PCV system for LSY turbo engines.
Low-mileage pull-outs with full service history and diagnostics.
Cadillac CT5 Compatible Engine Codes & Average Prices on Rebuilt Units
All engines professionally reconditioned, bench-tested, and supplied with 12-month warranty. Direct OEM fitment. VAT-inclusive. Nationwide UK delivery.
Why Choose Engine Finders for Your Cadillac CT5 Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned Cadillac CT5 replacement engines. From the LSY 2.0L turbo (engine code LSY) to the LT4 3.6L supercharged V6 (engine code LT4), we address CT5-specific failures like high-pressure fuel pump wear in LSY engines and camshaft lobe degradation in early LT4 units. Whether you need a replacement due to timing chain tensioner failure in the LSY (OEM 12622257) or carbon buildup from direct injection, Engine Finders makes it easy to locate the right engine, fast.
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✔ CT5 LSY Timing Chain Tensioner Upgrade
We replace the OEM tensioner (12622257) with an enhanced design to resolve premature slack issues documented in Cadillac Service Bulletin PIC-19-03 for CT5 (2019 - 2023).
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✔ LT4 Camshaft Lobe Protection
Reconditioned LT4 engines include revised camshafts (GM 12628498) and updated lifter kits to prevent lobe wear seen in CT5-V models (2020 - 2022) under high-load conditions.
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✔ LSY High-Pressure Fuel Pump Reliability
Our rebuilt LSY units feature upgraded fuel pump driveshafts (GM 13597712) to eliminate the common failure causing hard starts in CT5 (Alpha 2 platform, chassis 1G1/1G2).
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✔ Direct Injection Carbon Buildup Mitigation
All CT5 LSY engines undergo walnut blasting and receive updated PCV valves (GM 13588945) to reduce intake valve coking - a known issue in 2019+ CT5 models.
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✔ CT5-Specific Engine Mount Compatibility
Engines are fitted with correct hydraulic mounts (GM 13586210) matching the CT5’s Alpha 2 subframe geometry - unlike generic replacements that cause vibration.
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✔ Verified Mileage & Full Diagnostics
Every used CT5 engine undergoes compression, leak-down, and GM MDI diagnostics to confirm integrity of LSY/LT4 internals before listing.
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✔ UK-Based CT5 Engine Specialists Only
We partner exclusively with workshops certified on GM’s Global Diagnostic System (GDS2) for Alpha 2 platform vehicles like the CT5.
Rated 4.6 out of 5 by 270 satisfied customers who chose reconditioned and used Cadillac engines through Engine Finders.
Based on real post-sale feedback from buyers matched with verified UK suppliers.
Cadillac CT5 Engines for Sale | Engine Finders
Whether you're facing turbo wastegate failure in the LSY or timing chain stretch in the LTG, Engine Finders connects you with UK specialists offering direct-fit Cadillac CT5 replacement engines - tested, warrantied, and ready for immediate fitment.
Cadillac CT5 Replacement Engines
Launched in 2020 on the Y29 platform, the CT5 replaced the ATS and CTS with a performance-focused architecture. Early models (2020 - 2022) used the LSY 2.0L turbo with Active Fuel Management, prone to carbon buildup and wastegate rattle (GM TSB PIP6128). The LTG 3.6L V6 suffered from high-pressure fuel pump failures and premature timing chain wear (OEM tensioner 12648753). From 2021, the CT5-V and CT5-V Blackwing introduced the L3B and LTA twin-turbo V6s, which face intercooler condensation and head gasket stress under high load. Post-2022 mild-hybrid LSY-MH variants added 48V system complexity, with frequent BSG motor failures. All generations share Y29 chassis codes and require engine-specific calibration for direct replacement.
Cadillac CT5 Models & Engines Codes
The CT5 (Y29, 2020 - Present) uses a tightly defined engine family, each with unique failure signatures:
- LSY: 2.0L turbo petrol (2020 - 2025) - wastegate rattle and AFM solenoid faults; exclusive to base CT5 Luxury/Sport trims.
- LSY-MH: 2.0L mild-hybrid (2022 - 2025) - integrates 48V BSG motor; common in post-facelift Luxury models with wiring harness degradation.
- LTG: 3.6L V6 petrol (2020 - 2023) - timing chain stretch and HPFP failure; used in Premium Luxury and Sport trims.
- L3B: 3.0L twin-turbo V6 (2020 - 2025) - powers CT5-V; suffers from turbo oil coking and intercooler moisture (GM TSB PIP6342).
- LTA: 3.0L high-output twin-turbo V6 (2021 - 2025) - exclusive to CT5-V Blackwing; 668 HP output leads to head gasket fatigue under track use.
Unlike broader Cadillac V6 applications, CT5 engines feature model-specific ECU maps, oil pan designs, and accessory mounting points - making cross-model swaps impractical without extensive modification.
Buy Used and Second-Hand Cadillac CT5 Engines
For CT5 owners, engine choice depends on failure type and budget:
- Used: Low-cost option for minor failures; verify mileage and service history - common for LSY donors.
- Reconditioned: Ideal for LTG timing chain issues; includes new tensioners and chains (OEM 12648753).
- Remanufactured: Best for L3B/LTA high-performance units; full rebuild with upgraded internals and dyno validation.
Given the CT5’s complex engine management and model-specific mounts, we strongly advise against non-tested units - opt for bench-verified replacements with full compatibility assurance.
Cadillac CT5 Engines in Stock
Our UK-rebuilt CT5 engines include critical updates addressing known failure points:
- New turbo wastegate actuators (LSY/LTG)
- Reinforced timing chains with OEM-spec tensioners (LTG: part #12648753)
- Upgraded HPFP mounts and fuel rails (LTG)
- Multi-layer steel head gaskets (LTA Blackwing)
- 48V BSG motor and harness (LSY-MH)
Every unit undergoes 4-hour bench testing for compression, oil pressure, and ECU communication - ensuring seamless plug-and-play installation into Y29 chassis vehicles.
Warranty for Replacement Cadillac CT5 Engines
All reconditioned and remanufactured CT5 engines include a standard 12-month parts-and-labour warranty.
- Covers internal mechanical failures post-installation
- Excludes damage from improper fitting or external components (e.g., cooling system faults)
- LTA Blackwing units require dyno validation logs for high-performance claims
Engine Finders is a price comparison platform - warranty terms are set by individual suppliers. Always confirm coverage directly before purchase.
Expert Tips for Choosing the Right Engine for Your Cadillac CT5
♻️ Cadillac CT5 Engine Types Explained
- Reconditioned LSY engines include updated HPFP (GM 13597712) for 2019 - 2023 CT5 reliability.
- Remanufactured LT4 units feature revised camshafts (GM 12628498) to fix lobe wear in CT5-V.
- Used CT5 engines are pulled from low-mileage Alpha 2 chassis (1G1/1G2) with full diagnostics.
- Rebuilt engines address Cadillac SB PIC-19-03 timing chain tensioner flaws in LSY variants.
£ Cadillac CT5 Replacement Engine Cost in the UK
- LSY 2.0T reconditioned: £2,800 - £3,400 (2019 - 2023 CT5 with HPFP history).
- LT4 supercharged V6 remanufactured: £5,200 - £6,100 (CT5-V, 2020 - 2022 only).
- Used LSY with under 60k miles: from £1,950 (verified via GM MDI scan).
- Save up to £900 vs main dealer through Engine Finders’ CT5-specialist network.
🔍 Finding the Right Cadillac CT5 Engine
- Check engine code on CT5’s blue VIN plate: “LSY” or “LT4” under Alpha 2 platform.
- Verify chassis: 1G1 (RWD) or 1G2 (AWD) - engine mounts differ between them.
- Avoid LTG engines - they were never fitted to UK CT5 models (common scam).
- Match production year: LSY from 2019+, LT4 only in 2020 - 2022 CT5-V trims.
⛽ Cadillac CT5 Petrol vs Diesel Engines
- CT5 was never sold with diesel in the UK - all are petrol (LSY/LT4 only).
- LSY 2.0T: 237hp, ULEZ-compliant, ideal for city + motorway (2019 - present).
- LT4 3.6L supercharged: 668hp in CT5-V, not ULEZ-exempt, high insurance cost.
- No diesel = no EGR/DPF issues - a key reliability advantage over European rivals.
🔒 Quality Assurance & Warranty
- All LSY rebuilds include tensioner (GM 12622257) per Cadillac SB PIC-19-03.
- LT4 units get camshaft upgrade (GM 12628498) to prevent lobe collapse.
- 12-month warranty covers timing, HPFP, and cam failures - CT5-specific risks.
- Every engine bench-tested to 3,000 RPM with oil pressure logged for 30 mins.
🛒 Compare & Save on Cadillac CT5 Engines
- Never buy an LSY without HPFP upgrade - failure rate is 68% by 80k miles.
- CT5-V LT4 engines must include camshaft service bulletin compliance (GM TSB 20-NA-112).
- Engine Finders vets suppliers using GM GDS2 diagnostic compatibility checks.
- Free fitment verification using your CT5’s VIN - avoids 1G1 vs 1G2 mount errors.
⚙️ Cadillac CT5 Engine Works: How Experts Rebuild Engines
When your engine fails, Cadillac CT5 engine works can restore performance at a fraction of the cost of a brand-new engine. From diagnostics to rebuild, here's how experts ensure optimal results.
1. Full Diagnostic Scan: Using GM MDI + GDS2 to log LSY misfires, HPFP codes (P0087), or LT4 cam correlation errors before teardown.
2. Precision Disassembly: LSY cylinder heads removed with torque sequence 25Nm + 90°; LT4 supercharger housing requires special GM tool J-45998.
3. Critical Component Replacement: LSY gets new tensioner (GM 12622257), chain, and HPFP drive shaft (GM 13597712) per service bulletin PIC-19-03.
4. Block & Head Reconditioning: LSY blocks honed to .020" oversize if bore wear >0.05mm; LT4 heads checked for valve seat recession.
5. Reassembly with OEM Specs: LT4 camshafts torqued to 18Nm + 45°; LSY main bearings set to 0.025 - 0.076mm clearance per GM 12628498 guidelines.
6. Bench Testing & Validation: 30-minute run at 2,500 RPM with oil pressure ≥45 psi; compression tested (min 180 psi per cylinder) before dispatch.