92-96 Gen 2 LT1/LT4 Drive by Cable 4L60E/T56 Transmission Standalone Harness

Overview

APPLICATION: 1992-1996 Gen II LT1/LT4 5.7L engines with drive-by-cable throttle.

This is the only LT standalone harness on our site that works with an OBS truck's factory cable-throttle setup — no pedal swap, no throttle-body conversion, and no drive-by-wire pedal bracket needed. If you're dropping a Gen II LT1/LT4 into an OBS Chevy/GMC truck and want to keep your factory cable throttle linkage, this is the harness for your build. PSI's own vehicle application selector lists this harness as compatible with the OBS Chevy 88-98 platform.

These Gen II LT1/LT4 engines originally came in the C4 Corvette, Camaro, Firebird, Caprice, Impala SS, Roadmaster, and Fleetwood.

Parts Included

• Complete braided engine and transmission wiring harness
• Instruction manual

Additional Items Required (Sold Separately)

• LT1/LT4 PCM — see our PCM-1001 (PCM with Programming) or PCM-1002 (Programming Service, Customer-Supplied PCM) listings
• Fan relays — see our Single Fan Relay Kit (KIT-1010)

Transmission Note

If selecting the 4L60E option, the transmission must be a 1994 or 1995 unit to be compatible with this harness.

Connections For

• Fuse/Relay Box
• Fuel Pump Control (relay included)
• Fan Controls
• Check Engine Light / Speedometer / Tachometer / OBD2
• IAC / TPS
• MAP Sensor
• Engine Coolant Temp (ECT) Sensor
• Alternator Control
• (2) Upstream Oxygen Sensors
• Crankshaft Position
• Camshaft Position
• Fuel Injectors
• Coil Packs
• Automatic or Manual Transmission Control
• Knock Sensors

Customer Must Hook Up

• Fuel pump
• Switched ignition power
• MIL / Check Engine Light
• Speedometer
• Tachometer
• Fan relay controls

Notes

Designed for retrofitting a 1992-1997 5.7L LT1/LT4 into older vehicles. Harnesses are professionally constructed from Brand New GM Delphi Connectors and TXL (Polyethylene Cross Linked) High Temperature Wire to GM Specifications. 100% Quality Control tested. Harness length is 4-5 feet from the rear of the cylinder head to the PCM mounting position.