Body Control Module

2021 GMC Sierra 2500 HD AT4, 6.6L Eng VIN 7SECTION Body Control Module

The Body Control Module responds to the selected drive mode by illuminating the appropriate drive mode indicator on the Drive Mode Select Switch. All indicators receive voltage via an indicator control circuit from a PWM high side driver in the Body Control Module. Ground to each indicator is individually controlled by a Body Control Module low side driver via a control circuit. For the selected drive mode, the Body Control Module will ground the appropriate control circuit and the indicator will illuminate.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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

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