Approval Details

Valid E.O.


This Executive Order approved the specified parts on on April 16, 2013.
As of Tuesday, March 21st, 2023 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
46-600292004-2005 GM Silverado/Sierra HD pick-up truck, Diesel 6.6L V8 LLY

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-550-6
  • Executive Order 550-6 / D550-6
  • ARB # D-550-6
  • Executive Order No: D-550-6
  • C.A.R.B. No. D-550-6
  • Resolution D-550-6
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-550-6 PDF

D-550-6 Document:

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