1997-2004 GM LS1 EFI Harness - Throttle by Wire
This harness is standalone and is not intended to replace the OEM engine wiring. Standalone harnesses are intended to run the designated engine and transmission only, generally when swapped into another vehicle.
This harness is designed for the 1997-2004 throttle by wire LS1/LS6 engines with a 4L60E/4L65E automatic or T56 manual transmission. These engines were factory equipped in 1997-2004 Corvette. Harnesses do not include any emissions related connections. Included with this harness is an 8 circuit modular fuse block and GM color coded wires with labels for easy installation.
This standard length harness allows four feet from the back of the intake manifold to where the fuseblock and ECM mount. Perfect for those that plan to mount these components under the dash or in the glove box.
This kit includes:
- All new fuel injection harness with OEM fitment connectors and harness breakouts
- OBDII connector, mounting bracket and check engine light
- Rubber grommet
- Mounting hardware
This harness also requires the following mating parts; ECM #12200411; TAC Module #12578953; Accelerator Pedal #12565643.
PLEASE NOTE: GM NO LONGER OFFERS THE ACCELERATOR PEDAL #12565643. THE SENSOR IS STILL AVAILABLE HOWEVER THE FULL ASSEMBLY IS NOT. WE RECCOMMEND SOURCING A PEDAL BEFORE PROCEDING WITH YOUR PROJECT.
We suggest trying a certified used parts supply such as lkqcorp.com
We recommend checking the online manual for the full list of required mating parts prior to ordering.
Number of Circuits: 8 Fuses with 2 Ignition and 1 Fuel Pump Relay
Harness Length: 4 Feet Between Engine and ECM
Fuse Type: Blade
Firewall Passthrough: Grommet
Color Code Based: 2002 Corvette
Circuit Designations: Printed Wire Tags on all Connectors and Open Ended Wires
The Fuse Block Protects The Following Circuits:
- DLC B+
- Driver Side Injectors and Coils
- Dual 40 amp Ignition Relays
- Fuel Pump
- Heated O2 Sensors, Mass Airflow Sensor, and Brake Switch
- Pass Side Injectors and Coils
- ECM and Malfunction Indicator Lamp
- ECM B+
- Transmission and TAC Module
This harness includes connections for the following components:
- Accelerator Pedal Position Sensor
- Alternator
- Brake Switch
- Cam Position Sensor
- Clutch Pedal Position
- Crank Position Sensor
- Cruise Control
- Data Link Connector
- Driver/Pass Front O2 Sensors
- Driver/Pass Knock Sensors
- ECM
- Engine Coolant Temperature
- Fan #1 Relay Ground ECM Activation
- Fan #2 Relay Ground ECM Activation
- Fuel Pump
- Fuel Pump Relay
- Fuel Pump Test
- Gear Indicator Switch
- Grounds
- Ignition Coils
- Ignition Switch Signal
- Injectors
- Malfunction Indicator Lamp
- MAP Sensor
- Mass Airflow / Intake Air Temperature Sensor
- Oil Pressure Sensor
- Reverse Lockout Solenoid
- Skip Shift Light
- Skip Shift Solenoid
- Starter
- Tachometer
- Throttle Actuator Control Module
- Throttle Actuator Control Module to Accelerator Pedal Pigtail
- Throttle Actuator Control Motor
- Throttle Position Sensor
- Transmission
- Vehicle Speed Sensor
- VSS Output for Speedometer
Fitment:
- Engine: 5.7L LS1 / LS6 w/ Throttle by Wire
- Trans.: 4L60E, T-56
