Circuit/System Verification

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Circuit/System Verification
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. With the sunroof in the closed position, press the sunroof open switch. The sunroof should open.
    • If the sunroof does not open, refer to Power Sunroof Malfunction below.
  2. With the sunroof in the open position, press the sunroof close switch. The sunroof should close.
    • If the sunroof does not close, refer to Power Sunroof Malfunction below.
  3. With the sunroof in the closed position, operate the sunroof express open feature. The sunroof should fully open.
    • If the express open feature does not function, refer to Power Sunroof Express Feature Malfunction below.
  4. With the sunroof in the open position, operate the sunroof express close feature. The sunroof should fully close.
    • If the express close feature does not function, refer to Power Sunroof Express Feature Malfunction below.
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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.