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Vehicle Info NeededPAINLESS PERFORMANCE PRODUCTSPART NUMBER: 764-60524
EFI Wiring Harness GM LS3 Gen IV, Throttle-by-Wire
$76299
Ships on 09/17/2026
Lowest Price GuaranteeEFI Wiring HarnessGM LS3
EFI Wiring HarnessGM LS3 Gen IV Throttle-by-Wire With 4L65E, 4L70E, 4L80E, 4L85E Transmission
Painless 60524 Features:
- Uses the factory ECM and TCM
- Will operate engines with or without variable valve timing (VVT) and active fuel management (displacement on demand or DOD)
- Number of Circuits: 10 Fuses with 2 Ignition, 1 Cooling Fan & 1 Fuel Pump Relay
- 4 ft. harness length between the engine and ECM
- Mini Blade fuse type
- Firewall passthrough grommet
- Printed wire tags on all connectors and open-ended wires
Painless 60524 Notes:
- Standalone harness and is not intended to replace the OEM engine wiring - Intended to run a designated engine and transmission only (swap)
- Does not support flex fuel operation
- Requires the following mating parts; ECM 12597121 or 12612384, TCM 24234503, Chevy Performance Accelerator Pedal #809-25832864 or 25835421
Part TypeWiring Harness
BrandPAINLESS PERFORMANCE PRODUCTS
Package Height6.6
Package Width10.8
Package Length15.5
Weight10.95 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number60524
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
