Gen 5 AC Compressor Connectors

Oil Pressure and O2 Connector HInts

Identifying the Year of a Gen 5 Harness

Harness Pigtail Connections

How to Identify the Year of Your Transmission

Easy Cooling Fan Control Solution

Mixing and Matching Components

L83 L86 LT1 Accelerator Pedal Options

Oil Pressure Gauge Sensor Location

LTx Fan Thermoswitch and Adapter

Identify the Year of an ECM or TCM

Fan Relay Module Hook Up

Oxygen (02) and MAF Sensor Advice

Plain English Disclaimer:  Over the years we've presented a ton of information here on this website, in videos, verbally over the phone and in printed instructions and supplements.  We've done our best to test and verify each suggestion made and at the time any information is conveyed it is believed to be accurate.  However GM makes calibration changes to each of their Electronic Modules internal software and hardware systems on an irregular basis.  We will do our best to update and modify the information we convey here on this website in a timely manner once a new challenge is discovered.  In the end, it's up to you the customer to check back here for updates to suggestions and installation techniques and make the appropriate modifications to your installation approach  if needed.

How to identify a Gen 2 10L80 Transmission side connector

L83 and L86 Harness Grounds

What needs to be sent for modification?


Reusing the Gen 5 AC Compressor

How to identify a Gen 2 10L80 TCM side Connector

Mass Air Flow Sensors for Gen 5 LTx

Disconnecting L83 L86 and LT1 Connectors

Cruise Control, Tap Shift, Tow Haul, Transfer Case

No Fuel Rail Pressure Part 1

Fuel Rail Pressure Sensor Differences

No Fuel Rail Pressure Part 2

(Transposition Error)

L83 L86 and LT1 Donor Harness

How to Ship, Check-In and Invoicing

Here's a few short videos based on the regular questions we are asked.  We'll add videos as new questions pop up so check back occasionally for added content.  You can also subscribe to our Youtube channel and receive notification when updates are added at:    

Standalone Harness Youtube Channel