Cadillac Lyriq Electric Motor ReplacementCompare Quotes from UK Specialists

Rebuilt Cadillac Lyriq drive units typically cost £3,500-£9,500 supply-only, depending on RWD/AWD configuration and whether inverter module replacement is included. Supply & fit adds £850-£2,200 labour.

• RWD single-motor units: £3,500-£6,200 rebuilt supply-only
• AWD dual-motor systems: £5,200-£9,500 for complete replacement
• Inverter module-only repair: £1,800-£4,200 if motor windings are sound
• All rebuilt units include 12-month unlimited mileage warranty

Yes - Cadillac provides an 8-year/100,000-mile warranty on the 102kWh battery pack for defects and capacity loss below 70%, covering most early-failure scenarios.

• Warranty covers manufacturing defects, weld issues (recall 2023563), and excessive degradation
• Capacity must fall below 70% of original for warranty replacement eligibility
• Out-of-warranty rebuilt packs cost £8,500-£18,500 supply-only
• Module-level repair may be possible for isolated cell failures

The "Reduced Propulsion Power" warning typically indicates drive motor inverter fault code P0A78, triggered by overcurrent detection or phase imbalance in the AC permanent magnet motor system.

• DTC P0A78 is the most common fault code driving Lyriq replacement enquiries
• Faults often occur between 35,000-75,000 miles on early-production units
• Software reset may temporarily clear code but hardware replacement is usually required
• Rebuilt drive units with upgraded inverter modules address the root cause

Yes - inverter module replacement, sensor repairs, or bearing service can fix specific faults without full drive unit replacement, but only if the motor windings and core components are intact.

• Inverter module swaps cost £1,800-£4,200 versus £3,500+ for full rebuilt unit
• Bearing noise or winding damage requires complete drive unit replacement
• Specialist diagnostics essential to determine repair-versus-replace viability
• Rebuilt units with upgraded components offer better long-term value for high-mileage vehicles

EngineMarket connects you with vetted UK specialists supplying rebuilt, reconditioned and used Cadillac Lyriq drive units, with nationwide delivery and 12-month warranty coverage on all rebuilt units.

• Network includes EV-certified rebuilders with Ultium platform experience
• All suppliers provide full unit history, testing reports and warranty documentation
• Supply-only or complete supply & fit options available depending on your needs
• Free quote comparison ensures you find the best value for your specific variant

With proper maintenance, Lyriq drive units are designed for 150,000+ miles, but inverter module faults (P0A78) commonly emerge between 35,000-75,000 miles on early-production units.

• Motor windings and bearings typically outlast inverter electronics
• Thermal management system health significantly impacts longevity
• Regular coolant service and software updates help prevent premature failures
• Rebuilt units with upgraded inverters often exceed original equipment lifespan

RWD Lyriq uses a single 340hp rear motor (PMSM-RR), while AWD adds a front motor (PMSM-FR) for 500-528hp combined output - requiring different replacement parts and calibration procedures.

• RWD replacement: single PMSM-RR unit, simpler installation, lower cost
• AWD replacement: dual PMSM-FR/RR units, complex calibration, higher cost
• Inverter modules differ between configurations - ensure correct part matching
• AWD systems require inter-motor communication calibration after replacement

Used drive units from low-mileage accident-damaged Lyriq vehicles can be reliable if sourced from verified salvage suppliers with full testing documentation and warranty coverage.

• Request pre-sale dyno test reports and mileage verification
• Ensure unit includes inverter module and all mounting hardware
• Verify compatibility with your specific model year and variant
• Budget for potential calibration costs even with good-condition used units

Yes - high-voltage safety procedures, motor calibration and BMS communication require EV-certified technicians with Ultium platform experience - never attempt DIY drive unit replacement.

• HV system isolation and discharge procedures mandatory for safety
• Proprietary diagnostic tools required for motor calibration and fault clearing
• Incorrect installation can void warranty and cause secondary damage
• EngineMarket's network includes only EV-certified Lyriq specialists

Rebuilt Cadillac Lyriq drive units typically ship within 3-5 working days from UK specialists, with supply & fit appointments available within 1-2 weeks depending on location and unit complexity.

• In-stock rebuilt units available for common RWD configurations
• AWD and high-output Sport units may require 5-7 day build time
• Supply & fit scheduling depends on specialist workshop capacity in your area
• Express service available for urgent cases at premium cost