Approval Details

Valid E.O.


This Executive Order approved the specified parts on on May 5, 1989.
As of Sunday, June 4th, 2023 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
DF20021973-1978 model year GM 1/2 to 1 ton trucks all engines

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-191
  • Executive Order 191 / D191
  • ARB # D-191
  • Executive Order No: D-191
  • C.A.R.B. No. D-191
  • Resolution D-191
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-191 PDF

D-191 Document:

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