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Evaporative Emissions Valve
The evaporative emissions system can be used with the Chevrolet Performance Engine control kit, but is not required for proper engine operation. The
port must be either plugged or connected to a vapor canister.
EVAPORATIVE EMISSIONS PORT (1)
Engine Wiring Harness
The following lists the engine and vehicle side connections. Optional circuits are described in the 'Optional Connections' section below: NOTE: A
Malfunction Indicator Lamp (MIL- sometimes called a "service engine soon" light) is mounted inside the fuse/relay center. A redundant MIL output
is also available in the harness near the pedal module connector. It is recommended that a MIL also be installed in a visible location in the passenger
compartment. This circuit requires any 12v low current light and an ignition 12v power source. The ECM MIL output supplies the ground for the
circuit.
Connections Required for Correct Operation
Mass Air Flow (MAF) Sensor – 8 pin Connector
Electronic Throttle Control – 5 pin Connector
Manifold Absolute Pressure (MAP) Sensor – 3 pin Connector
Oxygen Sensors (2 total) – 4 pin Connectors
Knock Sensors (2 total) – 2 pin Connectors
Ignition Coils (8 total) – 4 pin Connectors
Crankshaft Position Sensor – 3 pin Connector
Accelerator Pedal Sensor – 6 pin Connector
Ignition Switch Input – 1 Wire
Fuel Pump Control – 2 Wires
Fuel Pump PWM Control and Shield - 3 wires
Battery Power (Stud at Fuse/Relay Center)
Cooling Fan Control – 2 Wires
Even Injectors and High Pressure Fuel Pump – 12 pin connector
Odd Injectors and Rail Pressure – 12 pin connector
Coolant Temperature and Oil Pressure – 5 pin connector
Two Stage Oil Pump, Cam Position and Cam Phaser – 8 pin connector
Generator – 2 pin connector
ECM (3 total) – 73 pin connectors
Fuel Line Pressure – 3 pin connector
Fuel Pump Power Module (FPPM) – 16 pin connector
Vehicle Speed Sensor – 2 pin Connector - not used with 8 speed automatic transmission
Optional Connections (Not required for operation)
Optional User Outputs Bulkhead – 12 pin Connector (12-way)
Malfunction Indicator Lamp (MIL) – 1 Wire
Assembly Line Diagnostic Link (ALDL) – 16 pin connector
Top of Travel Clutch Switch/Brake Switch – 2 wires, REQUIRED FOR T56 TRANSMISSION.
Canister Purge Solenoid – 2 pin connector
Connections
Note: It may be easier to install the harness on the engine before installing the engine into the vehicle.
Connect all engine/vehicle-side connectors before connecting the harness to the ECM. All engine/vehicle-side connectors are functionally labeled.
Consult a service manual if necessary to determine connection locations (see following service manual information).
LT1 Based Engine Control System
ALL INFORMATION WITHIN ABOVE
Date
BORDER TO BE PRINTED EXACTLY
03MY19
AS SHOWN ON 8.5 x 11 WHITE 16
POUND NON-BOND RECYCLABLE
PAPER. PRINT ON BOTH SIDES,
EXCLUDING TEMPLATES. TO BE
UNITIZED IN ACCORDANCE WITH
GMCCA SPECIFICATIONS.
IR 03MY19
Revision
Auth
Init Rel – Blake Nye
NA
PART No.
19418601
DR
Installation Instructions
Title
LT1 Based Engine Control System
19418601
PART No.
SHEET
5 of 33
SHEET 5 of 33
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