Description

The PSI HAR-2001-4 is a complete standalone wiring harness designed for engine swap and conversion projects. This harness provides plug-and-play operation with a simple four-wire hookup for your engine and transmission conversion.

Application

2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 GEN V 5.3 6.2 LT1 L83 L86 ENGINES

Parts Included

Complete engine and transmission wiring Harness, Instruction Manual

Harness Connections

Fan Controls
Check Engine Light
Speedometer Output
Tachometer
Automatic or Manual Transmission Control

Additional Items Required

E92 ECM, T43 TCM (6L80E), T87 TCM TCM (8L90E/10L90E) Your engine might have used a different ECM, our harness is designed to use the E92 ECM.
A T87A is required for Gen 1 10 speeds (pre 2019) while a T93 is required for Gen 2 (2019+) 10 speeds. The harness will plug into either TCM as they use the same plugs, there are no differences on the harness, only within the computers and computer programming.
* An OBD-II Speedometer / Tachometer (P/N STA-1000) is available from PSI to supply Tachometer, Speedometer and Check Engine Light
TRANSMISSION COMPATIBILITY:
6L80/90Es: Must be 2013+ model year transmissions to work with a Gen 5 LT system.
8L80/90Es: 2014-2018 gen 1 model years currently compatible. The gen 2 8 speeds (2019+) are currently not compatible.
10L80/90Es: All 2017-2018 Gen 1 10 speed transmissions are compatible. 2019-21 Truck/SUV and All 19+ Gm Performance and Camaro Gen 2 10 Speeds are compatible. 2022+ Gen 2 transmissions with the Electronic Transmission Range Select (ETRS) are not compatible. These ETRS transmissions will only have a "park" and "out of park" position on the external shift lever on the driver side of the transmission.

Notes

These Harnesses are designed for retrofitting '14 - 22 LT1/L83/L86 GEN V engines from Camaro Corvette Suburban Tahoe Yukon Yukon XL Escalade Silverado Sierra into older muscle cars and street rods or newer non-emissions controlled vehicles. They are completely plug and play with four wire hookup (switched power, constant power and ground connections required). Harnesses are designed with a sliding grommet seal and 4 - 5 feet of length from the rear of the cylinder head to the PCM mounting position under the vehicle dashboard. A sliding grommet seal allows for professional, leak proof installation. Harnesses are professionally constructed from Brand New GM Factory/OEM Connectors and TXL (Polyethylene Cross Linked) High Temperature Wire to GM Specifications. All Harnesses are 100% Quality Inspected prior to shipping. All Harnesses require PCM VATs removal, available through PSI. Please contact PSI for more information. FANS: Fan control wires will only output signal depending on the operating system your ECM has. These wires are not guaranteed to control your fans. They will 100% not output signal when using a manual transmission. We offer the PAC-2800BT fan controller with Gen 5 harnesses for this reason.