Approval Details

Valid E.O.


This Executive Order approved the specified parts on on July 23, 2009.
As of Tuesday, March 28th, 2023 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
10012007-2009 Chevrolet Silverado, GMC Sierra, Cadillac SUV & SUT, GMT-900 Series Trucks & SUVs 4.8, 5.3, 6.0, 6.2 liter

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-520-4
  • Executive Order 520-4 / D520-4
  • ARB # D-520-4
  • Executive Order No: D-520-4
  • C.A.R.B. No. D-520-4
  • Resolution D-520-4
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-520-4 PDF

D-520-4 Document:

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