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Cadillac CT4 Engine ReplacementCompare Quotes from UK Specialists

Get quotes from trusted UK Cadillac CT4 engine specialists. Compare reconditioned and rebuilt prices for L3B and LF4 - 2.7L turbo I4 to 3.6L twin-turbo V6 covered. Get specialist quotes for your CT4.

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Cadillac CT4 LSY engine - petrol 2.0L rebuilt reconditioned UK
CT4 2.0L Petrol Engines- from £7,200 to £9,800

Rebuilt units from £7,200

Common codes: LSY, LSYH, LSYK

Cadillac CT4 L3B engine - petrol 2.7L twin-turbo rebuilt reconditioned UK specialist
CT4 2.7L Performance Engines- from £9,400 to £13,000

Rebuilt units from £9,400

Common codes: L3B, L3BH, L3BK

Cadillac CT4 LGY Blackwing engine - petrol 3.6L twin-turbo rebuilt reconditioned UK specialist
CT4 Blackwing 3.6L Engines- from £14,800 to £19,000

Rebuilt units from £14,800

Common codes: LGY, LGYH

Cadillac CT4 engine replacement UK - compare reconditioned and rebuilt engine prices
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How It Works

3 Simple Stepsto Finding the Best Cadillac CT4 Replacement Engine

12-Month Warranty
Supply & Fit Available
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Trusted UK Suppliers

Most replacements completed within 3-5 days.

Engine Intelligence

Cadillac CT4 Engines - Codes, Common Failures & Replacement Costs

The cards below cover the main engines fitted to the Cadillac CT4 in the UK, including documented failure causes, variant production years, and typical rebuilt engine costs based on current UK market data.

Cadillac CT4 engine intelligence reference

L3B

Production History

  • CT4 Sport 2.7L - 2021-2024
  • CT4-V 2.7L High-Output - 2022-2024
  • CT4 Premium Luxury 2.7L - 2021-2024

Known Failures

  • Turbo coolant pipe cracking - plastic pipes fail at 40-60k miles causing overheating.
  • Timing chain tensioner wear - reported at 50-70k miles under performance use.
  • PCV system oil consumption - increased burn after 40k miles on high-stress units.

Specs

Petrol · 2.7L · 237-325hp · Twin-Turbocharged

Replacement Cost

Typical UK rebuilt engine: £9,400-£13,000 (supply only)

LSY

Production History

  • CT4 Luxury 2.0L - 2020-2024
  • CT4 Premium Luxury 2.0L - 2020-2024
  • CT4 Sport 2.0L (early production) - 2020-2021

Known Failures

  • Timing chain tensioner failure - GM TSB PI2021-003, rattles at 60-80k miles.
  • High-pressure fuel pump wear - hard starting and power loss after 65k miles.
  • Thermostat housing cracks - plastic housing leaks coolant at 40-60k miles.

Specs

Petrol · 2.0L · 237hp · Turbocharged

Replacement Cost

Typical UK rebuilt engine: £7,200-£9,800 (supply only)

LGY

Production History

  • CT4-V Blackwing 3.6L - 2022-2024

Known Failures

  • Turbo oil seal wear - ceramic cartridge seals degrade at 35-50k miles under track use.
  • Intercooler piping splits - high-boost pressure causes hose failure on modified units.
  • Knock sensor calibration drift - requires GDS2 recalibration after hard driving.

Specs

Petrol · 3.6L · 472hp · Twin-Turbocharged

Replacement Cost

Typical UK rebuilt engine: £14,800-£19,000 (supply only) Estimated from comparable LGY units - actual quotes may vary.

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Variants We Cover

Cadillac CT4 Engine ReplacementAll Variants Covered

Not sure which variant your Cadillac CT4 is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.

Engine Codes

Cadillac CT4 Engine Codes

Every engine code fitted to the Cadillac CT4 across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.

Petrol Engines

Extracted from detailed petrol and performance engine families across Cadillac CT4 variants.

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Can't find your engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Cadillac CT4 engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

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Common Problems

Cadillac CT4 Engine Problems

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Save vs Main Dealer Price

Disclaimer: All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EngineMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Cadillac CT4 and engine code. Every engine supplied through EngineMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier.

Replacement Engine Options

Cadillac CT4 Replacement Engine Types

Every Cadillac CT4 engine type is available through our UK network with typical price ranges based on variant, engine code and budget.

Cadillac CT4 Refurbished EnginesTargeted repair of specific failed components while retaining serviceable original parts for cost-effective restoration.
Typical Price
£6,200 - £13,000
(supply only)
View refurbished Cadillac CT4 engine options
Refurbished

Refurbished CT4 engines address specific failures like turbo seals or HPFP while preserving good original components.

  • Balanced cost and reliability for moderate failures
  • Faster turnaround than full rebuilds
  • Warranty covers replaced components and labour
Typical Price
£6,200 - £13,000
(supply only)
View refurbished Cadillac CT4 engine options

All rebuilt engines include a minimum 12-month warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Cadillac CT4 within hours.

Engine Sizes

Cadillac CT4 Engines by SizeFind the Right Displacement for Your Variant

Every displacement fitted to the Cadillac CT4 in the UK is listed below, with compatible engine codes, production years and common failure notes to help you identify the right replacement.

The 2.0L LSY turbo four was the launch engine for the CT4, powering entry Luxury and Premium Luxury variants with efficient single-turbo performance and direct injection technology.

ENGINE CODE(S)LSY, LSYH, LSYK
COMPATIBLE MODELS (UK)Luxury (2020-2024), Premium Luxury (2020-2024), Sport early production
PRODUCTION YEARS2020-2021
Common Failure Points

Timing chain tensioner wear per GM TSB PI2021-003; HPFP failure after 65k miles

Get quotes for Cadillac CT4 2.0L petrol engines

Not sure which engine size your Cadillac CT4 needs- Enter your registration number above - we'll identify the exact displacement, engine code and compatible replacement options instantly. All engines supplied through EngineMarket include a minimum 12-month unlimited mileage warranty from UK Cadillac CT4 specialists.

Fuel Type

Cadillac CT4 Engines by Fuel Type

Choose your Cadillac CT4 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from the efficient 2.0L Luxury to the 472hp Blackwing.

All Cadillac CT4 variants sold in the UK use petrol engines only, with turbocharged four-cylinder and twin-turbo V6 options covering entry to flagship performance.

Common Cadillac CT4 Petrol Engine Families
LSY
2.0L turbo four (Luxury/Premium Luxury), timing chain tensioner concerns per GM TSB
L3B
2.7L twin-turbo four (Sport/V-Series), plastic coolant pipe failure pattern at 40-60k miles
LGY
3.6L twin-turbo V6 (Blackwing), turbo oil seal wear under track use
Found In
First Generation (2020-2024)
LSY, L3B, LGY
Known For
No diesel or hybrid options offered in UK market
L3B twin-turbo dominates replacement enquiries due to performance usage patterns
US-spec imports require DVLA documentation and GM SPS2 coding support
Typical Petrol Models
CT4 Luxury 2.0LCT4 Premium Luxury 2.0L/2.7LCT4 Sport 2.7LCT4-V 2.7L High-OutputCT4-V Blackwing 3.6L
Compare Cadillac CT4 Petrol engine prices

Not sure which fuel type your Cadillac CT4 has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Cadillac CT4 specialists.

Engine Years

Cadillac CT4 Engines by YearWhat Was Fitted & When

This section covers all major engine changes across the Cadillac CT4's UK production timeline, organised so owners can quickly identify their engine and compare rebuilt engine prices from UK specialists.

2020 - Launch Year: LSY 2.0L Turbo Debut
Major Engine Changes1 engine highlights
The CT4 launched exclusively with the LSY 2.0L turbo four, establishing the entry point for the model's petrol-only UK range.
Key Changes
Cadillac CT4 introduced to UK market as US-spec grey import
Only 2.0L LSY turbo petrol engine available across Luxury and Premium Luxury trims
Right-hand drive conversions began for UK compliance
Known For
Early production LSY units subject to GM TSB PI2021-003 for timing chain tensioners
Strong demand for US-import verification and DVLA compliance documentation
Entry-level pricing makes LSY the highest-volume replacement enquiry
Main Engines
LSY - 2.0L petrol turbo (Luxury / Premium Luxury)
Engine Codes Covered
LSYLSYHLSYK
Popular Models
Cadillac CT4 Luxury
Cadillac CT4 Premium Luxury
Common Replacement Enquiries
Cadillac CT4 LSY engine replacement
Cadillac CT4 timing chain fix
Cadillac CT4 2.0L turbo rebuild
Get quotes for 2020 Cadillac CT4 replacement engines
FAQ

Cadillac CT4 Engine ReplacementFrequently Asked Questions

How much does a Cadillac CT4 engine replacement cost in the UK-

Cadillac CT4 engine replacement costs range from £7,200 for a rebuilt 2.0L LSY to £19,000 for a Blackwing LGY unit, depending on engine code, condition and whether supply-only or supply & fit is selected.

  • LSY 2.0L rebuilt: £7,200-£9,800 supply only
  • L3B 2.7L twin-turbo rebuilt: £9,400-£13,000 supply only
  • LGY 3.6L Blackwing rebuilt: £14,800-£19,000 supply only
  • Supply & fit adds £800-£2,200 depending on garage location
Compare Cadillac CT4 engine replacement prices UK

What engine codes are used in the Cadillac CT4-

The Cadillac CT4 uses three main petrol engine codes: LSY (2.0L turbo), L3B (2.7L twin-turbo) and LGY (3.6L twin-turbo V6 for Blackwing), each with distinct failure patterns and replacement costs.

  • LSY: 2.0L turbo four, Luxury/Premium Luxury, timing chain concerns
  • L3B: 2.7L twin-turbo four, Sport/V-Series, coolant pipe failures
  • LGY: 3.6L twin-turbo V6, Blackwing only, turbo seal wear under track use
Verify your Cadillac CT4 engine code with our VIN checker

How long does a Cadillac CT4 engine replacement take in the UK-

Supply-only rebuilt engines typically dispatch within 3-5 working days for US-import cores, while supply & fit appointments at specialist garages usually complete within 7-10 days including GM SPS2 coding.

  • Rebuilt engine build time: 3-5 days from core receipt
  • Nationwide delivery: 1-2 working days after dispatch
  • Specialist installation & coding: 1-2 days at garage
  • Total supply & fit turnaround: typically 7-10 days
Book Cadillac CT4 engine supply & fit appointment UK

Do I need GM SPS2 coding after fitting a new Cadillac CT4 engine-

Yes, all Cadillac CT4 engine replacements require GM SPS2 coding to pair the new engine to the vehicle's immobiliser and ECU, preventing no-start conditions and ensuring full functionality.

  • SPS2 coding mandatory for LSY, L3B and LGY engine replacements
  • Coding requires GM GDS2 diagnostic equipment and specialist knowledge
  • Most EngineMarket suppliers include coding support or referral in their quote
Get quotes including SPS2 coding for your Cadillac CT4

What warranty comes with a Cadillac CT4 replacement engine in the UK-

All Cadillac CT4 replacement engines supplied through EngineMarket include a minimum 12-month unlimited mileage warranty covering internal components, valid for UK-registered imports with proper documentation.

  • 12-month unlimited mileage warranty standard across network
  • Warranty covers internal components, seals, gaskets and machining
  • Proper DVLA documentation required for warranty validation on imports
View warranty terms for Cadillac CT4 rebuilt engines

Can I upgrade my Cadillac CT4 engine during replacement in the UK-

Yes, performance upgrades like forged pistons, upgraded turbos and aluminium coolant pipes are available for L3B and LGY engines during the rebuild process, with UK compliance documentation included.

  • L3B upgrades: aluminium coolant pipes, revised PCV, uprated turbos
  • LGY Blackwing: forged pistons, ceramic turbo cartridges, moly rings
  • All upgrades include documentation for DVLA and insurance notification
Enquire about performance upgrades for your Cadillac CT4 rebuild

How do I know which Cadillac CT4 variant I have for import-

Check your US VIN or UK registration through our instant lookup tool to confirm your CT4 variant, engine code and compatible replacement options before requesting quotes.

  • Luxury/Premium Luxury: typically LSY 2.0L or optional L3B 2.7L
  • Sport: L3B 2.7L twin-turbo standard from 2021
  • CT4-V: uprated L3B 325hp; Blackwing: exclusive LGY 472hp
Use our Cadillac CT4 variant checker to confirm your engine

What causes Cadillac CT4 engine failure most commonly in UK imports-

The most common Cadillac CT4 engine failures are LSY/L3B timing chain tensioner wear (60-80k miles), L3B plastic turbo coolant pipe cracking (40-60k miles) and LGY turbo oil seal degradation under track use.

  • Timing chain tensioners: GM TSB PI2021-003 affects LSY and L3B
  • Coolant pipes: plastic L3B pipes crack causing overheating
  • Turbo seals: LGY Blackwing units wear faster with track driving
Get quotes for Cadillac CT4 common failure repairs

Is a used Cadillac CT4 engine reliable for UK import-

Used US-spec Cadillac CT4 engines can be reliable if sourced from low-mileage, non-accident donors and verified with compression testing, but rebuilt units offer upgraded components and warranty protection.

  • Used engines: budget option but require thorough inspection
  • Rebuilt engines: include upgraded failure-point components and warranty
  • Always verify core history and request compression test results
Compare used vs rebuilt Cadillac CT4 engine options

Do you offer supply and fit for Cadillac CT4 engines nationwide UK-

Yes, EngineMarket's network includes GM-specialist garages across the UK offering supply & fit packages for Cadillac CT4 engines, including US-import expertise and SPS2 coding support.

  • 25+ specialist garages nationwide with GM diagnostic capability
  • US-import experience including RHD conversion compatibility checks
  • Single-point warranty covering both engine and installation labour
Find Cadillac CT4 supply & fit specialists near you

Why Choose Us

Why UK Cadillac CT4 Owners Trust EngineMarket

Join thousands of UK drivers who compare Cadillac CT4 engine prices through our network of trusted specialists - every rebuilt and reconditioned unit backed by a minimum 12-month unlimited mileage warranty and nationwide delivery.

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