IMPORTANT!! ******* Read Carefully and Ask Questions Before Purchase--Thank You!******

I am offering these LS1/LS6/Vortec 4.8-5.3-6.0L harness/pcm combination now on my web page.

Here is the deal-

Harness ONLY: flat rate costs of $379.99 including shipping and insurance with signature confirmation ( 50 United States of America only). Shipping to Canada is $45.00.

Harness/PCM combo: flat rate costs of $489.99 including shipping and insurance with signature confirmation ( 50 United States of America only). Shipping to Canada is $45.00.

* If you do not have the coil pack harness, I can build these into the harness for a neater appearance.

LS1 style coil connectors: $45.00
Vortec Truck coils connectors: $65.00
Cruise Control Option: This includes the connector for the electronic cruise module, associated wiring and pig tail wires for the brake switch for the automatic transmission or the brake switch and clutch switch for the manual transmission. The cruise control module, switches and associated brackets are not included and must be purchased independently. COST: $25.00

IF YOU NEED THE ADD ON (EXTRA COST OPTIONS) PLEASE ADD YOUR CART WHEN PURCHASING

I accept payment through Paypal, Mastercard, Visa, or personal check (subject to holding for clearing my bank), USPS Postal Money Order or Cashiers Check (U.S.A. only). See shopping cart button link at the end of this page for instant payment.

Contact- My email address is LSparks709@aol.com, this is the only means of reaching me, I will answer all emails promptly dealing with purchase and support after the sale. All other emails will be considered Spam and block accordingly. Due to abuses in the past, no phone support is offered, sorry.

Mailing address- Leonard Sparks, PO BOX 30441. Midwest City, OK 73140.

This is a reconfigured harness, custom built to put a 1997-2003 Camaro/Firebird LS1-Corvette LS1/LS6 or 1999-2003 Vortec 4.8-5.3 or 6.0L in an older non computer vehicle, with a Turbo 350/400, 200R/700R, 4L60E or Manual Transmission. If you are looking to put a 21st century power plant in your older classic, this is the ticket.

This harness retains all the functions as a stock harness allowing to run only the front O2 sensors (left and right) which is required. All other non emission functions will be programmed out of the PCM, IF you are legally allowed to run a non-emission LS1-Vortec V8.The VSS is also required.

Right now, I only support the engines that are cable operated- NOT electronic "drive by wire" throttle, that uses the 24X crank reluctor (the 24X crank sensor is black, the 58X is gray).

The centerline of the pcm connectors to the centerline of the engine is 50 inches, you must measure carefully to allow for proper installation. I can build the harness to up to 70" maximum, and I will need to know where you plan to mount the computer (pcm).

The harness is wrapped in OEM spec ET501 dry vinyl taped rated to 125C.

IMPORTANT!!! Click here for information on pcm location help.

All factory standard connectors for the GEN III is provided:

Mass Air Flow Sensor
Intake Air Sensor
Idle Air Control
Engine Temperature Sensor
Generator Turn On Signal
Fuel Injectors
Left and Right Bank Coil Pack (not the coil pack harness that plugs into these)* see below
Knock Sensor
O2 Sensor (Bank 1&2 Pre-Cat)
Oil Pressure
Oil Level
Camshaft Position
Manifold Pressure (MAP)
Crankshaft Position
Vehicle Speed Sensor
AC On Recognition Input
Data Link Connector (DLC)
Malfunction Indicator Lamp Pigtail
Park-Neutral Input Pigtail (4L60E only)
Tachometer Pigtail
4K pulse output for Elect. Speedo
Oil Pressure (Elect. Gauge)
Fuel Pump Pigtail
Fuel Pump Test Pigtail
Fuel Pump Relay (included)
Primary Fan Relay (included)
Primary Fan Connector
Secondary Fan Relay (included)
Secondary Fan connector
Battery Power Input
8 Way Fuse Block with Fuses included

BE AWARE OF OTHERS SELLERS ONLY SELLING "PARTIAL" HARNESSES! - No DLC, Fuel Pump Relay, Fan Relays etc, and hit you with hidden charges!

Other items that are available, at no additional costs!

Secondary Fan: relay, fan connection
4L60E transmission connector/wiring
T56 reverse lock out/skip shift connections
Vortec Gas Injector connectors NOT Flex Fuel
85MM MAF sensor 5 pin connector

(1) Differences between the fuel injector connectors: the Bosch style is on the left, the Vortec Gen III 4.8, 5.3 and 6.0L connectors on the right side (see picture). (2) The differences between the MAF sensors are in next picture: 3 pin MAF and the 5 pin (right side) that uses the integrated IAT sensor. (3 & 4) Differences for the coil connectors ( LS1 style on the left, Vortec/LS2 coil)

1 2 3 4

I will also need to know the style of O2 sensor connector you are using (see picture below). If you don't have your O2 sensors, the flat plug design connectors will be incorporated in your harness unless otherwise specified. NOTE: This is the O2 sensor side.

1 year Warranty is provided for covering repairs due to workmanship only. Does not cover wrong application, misuse, abuse or alterations, wrong installation practices, wiring installed by purchaser to complete installation or lack of knowledge on the part of the purchaser/installer. All connections are crimped/soldered or twist- soldered to insure a positive long lasting termination.

Also included is the pcm with the programming for a STOCK 1999-2003 LS1 engine, with all the unnecessary codes deleted. Stock Vortec V8 (4.8-5.3-6.0L only) and LS6 is available. No custom programming!

NOTICE! I will need to know the following information, without it I cannot properly program the pcm to run efficiently.

Engine size and type i.e.: LS1, LS6, GEN III Vortec 4.8, 5.3, 6.0 or 8.1L V8
Transmission you are using i.e.: Turbo 350, 400, 200R4, 700R4 (4L60), 4L60E, 4L80E, manual transmission and type
Tire size in the following format; i.e.- 2xx -xx-Rxx, or tire diameter in inches
Differential gear ratio
Type of O2 sensor you are running (see picture for connector type)
Type of injector connector
Type of MAF sensor (see picture for connector type)
Location of the computer ( up to 65" from pcm connectors to engine firewall centerline) Inquire if unsure.
Do you already have the coil pack harness?

MY PCM's are NOT locked, so you can do your own programming if desired in the future!

Installation instructions on CD is included, over 70 pages.

I have over 15 years experience with GM fuel injection going back to 1996 and over 30 years field experience with electrical, pneumatics, and mechanical in the manufacturing sector.

Since this is a custom item, please allow up to 3 weeks to ship. Thank you. This is NOT a factory replacement harness. The harness picture is representative, varies based on the type of options.

Payment: You will be taken to the secure page of Paypal to make your payment either through Paypal or Major Credit Card. Your personal information will never to revealed to me or anyone else.

NOTE: To provide quick service and prompt customer attention, this page may become inactive from time to time, to allow time between harness builds, for life, family and work. Thank you for your business and understanding.

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