04.5-05 SILVERADO/SIERRA 2500/3500 DURAMAX LLY TURBO VANE POSITION SENSOR ADPTR HARNESS

Turbo Vane Position Sensor Adapter Harness | 2004.5–2005 Duramax LLY

Restore proper communication between your variable geometry turbocharger and the ECM with this Turbo Vane Position Sensor Adapter Harness from XDP. Designed specifically for the 2004.5–2005 GM 2500/3500 Silverado and Sierra equipped with the 6.6L LLY Duramax, this adapter harness eliminates wiring compatibility issues and ensures accurate vane position feedback for optimal turbo response.

Why You Need It

The LLY Duramax uses a variable geometry turbocharger (VGT) that relies on a vane position sensor to control boost. A faulty or incompatible wiring connection causes erratic boost, limp mode, turbo codes, and poor throttle response. This adapter harness provides a clean, plug-and-play solution without cutting or splicing factory wiring.

Features

• Direct plug-and-play adapter — no cutting or splicing required
• Restores proper VGT vane position sensor signal to the ECM
• Resolves turbo-related fault codes and limp mode issues
• Built for the 6.6L LLY variable geometry turbocharger
• Quality construction from XDP, a trusted diesel performance brand

Fitment

• 2004.5–2005 GM Silverado/Sierra 2500/3500 Duramax LLY

A simple, affordable fix that keeps your LLY's turbo system communicating correctly — and your truck out of limp mode.