Installation Instructions for Chevy/GMC Duramax LLY/LBZ/LMM 6.6L Stealth Module (2004.5-2010)

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. It's found behind the intake tube on the passenger side of the engine compartment. If you're having trouble locating it, look near the firewall.

Optional: Remove the air intake tube to access the fuel pressure sensor easier.

Sensor Connections

Sensor Connections

 Step 2:

Disconnect the fuel pressure sensor and plug in the mail fuel pressure plug to the female fuel pressure sensor. Install the female plug into the trucks male wiring harness.

Step 3:

Plug in the 4-position switch to the module's harness. It can be mounted inside the cab for easy access or it can be installed with the module under the hood.

Sensor Connections

 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.