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•
Ensure Fuel Pump Power Module is installed properly.
•
Once the engine is warmed up, oil pressure step changes of 15 psi or more may be seen. This is a normal operating condition and
varies with engine speed and engine load. The LTG engine uses a variable displacement oil pump that may cause the oil pressure
to fluctuate with engine operating conditions.
Don't:
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Change or alter any wiring in the accelerator pedal or electronic throttle systems.
•
Vacuum reference the fuel system.
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Solder or alter any Oxygen Sensor wiring.
Vehicle Requirements
Vehicle Speed Input
The ECM is programmed and looking for 12 pulses per revolution. The LTG Control System harness is designed to plug into the
output speed sensor of the transmission, which have a 12 pulse output.
Axle Ratio and Tire Size Requirements
The axle drive ratio in the calibration is set to 3.27:1 and is suitable for ratios from 3.08 to 4.11. Tire diameter needs to be between
26" and 30". NOTE: For optimal performance choose an axle ratio and a tire size with-in the recommended range.
NOTE:
All Engines are shipped with a manual transmission flywheel and do not include the starter. For automatic transmission applications,
the flexplate and torque converter must be purchased separately. See
Performance components.
Starter:
The LTG crate engine does not include a starter. GM part number 12657797 and starter bolts 11588726 are matched to this
application and is recommended. See your Chevrolet Performance Parts dealer for details.
Front End Accessory Drive:
Also see the CHEVROLET PERFORMANCE Catalog or chevroletperformance.com for recommended front end accessory drive kits.
Chevrolet Performance Parts kit 19329020 includes all of the 2015 LTG accessory drive components for non-hydraulic or manual
steering applications. The kit includes a generator, A/C compressor, and the required bolts and drive belt. The tensioner comes as
part of the engine assembly.
NOTE: The parts listed here may have been updated or superseded, go to gmperformanceparts.com for the latest part number list.
Parts List:
These instructions cover the following packages:
19328839 LTG Controller Kit
All Engine control kits have the following parts:
I-Sheet (Instruction Sheet)
Harness - unique to FWD and RWD applications
LTG Engine Harness
Mass Airflow Sensor
Mass Airflow Sensor Bracket
MAF Bolt/Screw – Qty 2
MAF Washer – Qty 2
Accelerator Pedal
Oxygen Sensor - Quantity 1
Oxygen Sensor mounting boss – Quantity 1
Fuel Line Pressure Sensor
Fuel Pump Power Module
Throttle Inlet Air Pressure Sensor
Bolt/Screw – Qty 1 - M8x1.25x25
Bolt/Screw – Qty 1 – M8x1.5x40
Emblem
Engine Control Module – unique to each kit
LTG Crate Engine Controls System
TITLE
ALL INFORMATION WITHIN ABOVE BORDER TO BE PRINTED EXACTLY AS SHOWN ON 8 1/2 x 11
WHITE 16 POUND BOND PAPER. PRINT ON BOTH SIDES, EXCLUDING TEMPLATES.
TO BE UNITIZED IN ACCORDANCE WITH GM SPECIFICATIONS.
www.chevroletperformance.com
19328840
REV 03JA17
PART NO.
DATE
01DE14
Initial Release - William Duncan
03JA17
Revision - Blake Nye
for recommended Chevrolet
2
SHEET
REVISION
38
OF
AUTH
N/A
N/A
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