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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1140 (ENGINE CONTROLS AND FUEL - 6.6L (LMM) - INTRODUCTION (2 OF 2))DESCRIPTION AND OPERATIONTURBOCHARGER SYSTEM DESCRIPTIONENGINE CONTROL MODULE (ECM)
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Engine Control Module (ECM)

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Engine Control Module (ECM)
WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The engine control module (ECM) controls all turbocharger control functions. The ECM monitors information from various sensor inputs that include the following:

  • The accelerator pedal position (APP) sensor
  • The engine coolant temperature (ECT) sensor
  • The mass air flow (MAF) sensor
  • The intake air temperature (IAT) sensor
  • The vehicle speed sensor (VSS)
  • The transmission gear position or range information sensors
  • The manifold absolute pressure (MAP) sensor
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.