Approval Details

Valid E.O.


This Executive Order approved the specified parts on on May 27, 1993.
As of Sunday, July 14th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1991-1993 General Motor G20-G30 heavy-duty trucks powered by a 5.7L ot 7.4 L V8 gasoline Engine and a 4L80K transmission

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-231-4
  • Executive Order 231-4 / D231-4
  • ARB # D-231-4
  • Executive Order No: D-231-4
  • C.A.R.B. No. D-231-4
  • Resolution D-231-4
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-231-4 PDF

D-231-4 Document:

Current View

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