Installation Instructions for Chevy/GMC Duramax LB7 6.6L Stealth Module (2001-2004)

Included With Purchase

(1x) Stealth Module
(1x) Wire Harness with Fuel Rail Sensor Connections
(1x) Selector Switch





Step by Step Instructions

Let your truck sit with the hood popped, doors shut and the key fob away from the vehicle for at least 20 minutes. It is important to keep the key fob away and the doors shut during the entire installation process. DO NOT bring the key fob near the vehicle or open any doors until AFTER the module is fully installed and connections are verified. This allows the computer to 'sleep' and for your engine compartment to cool down. Failure to do so will result in a check engine light on startup.

Step 1:

Locate the fuel pressure sensor on the fuel rail. It’s found below the boost tube pipe near the center of the engine. Removing large plastic intake resonator can make it easier gaining access.

Sensor Connections

Sensor Connections

Step 2:

Disconnect the fuel pressure sensor from the factory plug. Install the female fuel pressure plug to the truck’s fuel pressure sensor. Plug in the male connector to the engine’s female connector.

Sensor Connections

Sensor Connections

 Step 3:

Install the 4-position switch on the module’s harness. It can be mounted inside the cab for easy access or most often, left under the hood near the module.

 Step 4:

Ensure all connections are tight - all plugs should be snap closed when installed properly. Gently tug on all connections to make sure they are secure especially the fuel pressure plug.

The module and switch must be installed away from heat and moving parts.