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Chevrolet Performance 19256514

LS 5.3L Engine Control Kit

Chevrolet Performance 19256514


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Chevrolet Performance 19256514 LS 5.3L Engine Control Kit $1,196.94
LS 5.3L Engine Control Kit

Chevrolet Performance 19256514 Details

This controller is engineered for the following engine codes, which feature 58X ignition systems:
LC9 (2005-2009)
LH8 (2008-2009)
LY5 (2007-2009)
LMF (2008-2009)
LMG (2007-2009)

Installation Notes:

Installing the ECM - The ECM is the brain of the controller. It is weather-resistant and can be mounted under the hood, but it should be placed to avoid extreme heat and away from potential splash. Chevrolet Performance does not recommend mounting it directly to the engine.
Accelerator pedal - Chevrolet Performance's controller kits are designed for use with factory-type electronic throttles (no conventional throttle cable) that require a matched accelerator pedal. The pedal contains an electronic sensor that conveys to the controller when and how much to open the throttle. The pedal should me mounted at least 2.5 inches to the right of the brake pedal and 2 inches below it. There should be at least 0.75-inch clearance between the pedal and the transmission tunnel/center console. The pedal has a wire harness that connects to the controller, requiring it to be fed through the firewall - possibly requiring a new hole. Use a grommet on the hole to prevent chafing of the harness.
MAF - The mass airflow meter that comes with some Chevrolet Performance controller kits must be mounted in a 4-inch-diameter tube that has at least a 6-inch-long straight section. The kit includes the bracket and mounting bosses onto which the meter is secured on the tube - the tube must be cut to allow the meter to hang inside of it. The meter sensor must be mounted at the center of the straight section, making sure that is at least 10 inches from the throttle body. Orienting the MAF is essential for proper operation. The meter's sensor should be mounted with the connector end pointed between horizontal and fully upright.
Oxygen sensors - The oxygen sensors (one for each side of the exhaust) must be inserted in the exhaust stream ahead of the catalytic converters (if used). Holes are simply drilled into the exhaust tubing and the mounting bosses welded to them. After that, the oxygen sensors simply screw onto the mounting bosses and are connected to the wire harness.


Manufacturer's Part Number:

Tailor-Made for Retro Installations

This calibrated controller kit from Chevrolet Performance enables the quicker and easier adaptation of GM's popular 5.3L V-8 for countless hot rod projects. It works with 2005- 2009 5.3L engines and is specially programmed for retrofit installations, with features that make getting the vehicle running easier than if a production 5.3L controller were used. The kit also includes hardware and components that don't typically come with used engines, such as the wiring harness, mass airflow meter and electronic throttle pedal - eliminating the need to source them separately.
Unlike the calibration for regular-production controllers, this specially calibrated 5.3L controller does not engage the cylinder-deactivating Active Fuel Management system that originally came with the engines. A number of other features associated with production-model systems are turned off with the controller, as well, eliminating the possibility of "trouble codes" being set. It is also programmed for easy use with automatic transmissions and includes a SES (service engine soon) LED indicator embedded in the fuse box.
This 5.3L controller system is a true stand-alone system for use in older vehicles, as all that's needed to get a vehicle running with it are power and ground sources, a 58-psi (400 kPa) fuel pump and an electric cooling fan.

The kit includes:

  • Two oxygen sensors
  • Two oxygen sensor mounting bosses (for installation in the exhaust system)
  • Mass airflow meter
  • Mass airflow meter mounting boss (for installation in the air intake system)
  • Throttle pedal assembly (for use with the electronically operated throttle)
  • Specific oil pressure sensor that is compatible with the harness
  • Complete wiring harness with fuse box and necessary cam sensor and MAP sensor jumpers
  • Programmed controller
  • Instruction sheet
  • 12-month/12,000-mile warranty

    This controller is engineered for the following engine codes, which feature 58X ignition systems:
    LC9 (2005-2009)
    LH8 (2008-2009)
    LY5 (2007-2009)
    LMF (2008-2009)
    LMG (2007-2009)

  • 19256514 - Chevrolet Performance LS 5.3L Engine Controller Kit is rated 4.0 out of 5 by 1.
    Rated 4 out of 5 by from gm harness Thanks for your great service. I had one small problem. GM did a nice job on the harness but they have the wrong oil pressure sensor with the kit. The sensor is for the 06-07 lc9 but it needs the 08-up sensor. Tried calling my local chevy dealer as I think this would be kind of a warranty deal but he was not very helpful. Jegs of course I called this morning and he said" no problem, we'll send out the right one on Monday ". Thanks for your great service.
    Date published: 2015-02-14
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