Approval Details

Valid E.O.


This Executive Order approved the specified parts on on October 12, 2000.
As of Tuesday, May 21st, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1982 to 2001 model year General Motors vehicles as listed in E.O., excluding any vehicle certified to the Ultra Low Emission Vehicle Standards (ULEV) or lower.Vehicles certified under the new Supplemental Federal Test Procedure (SFTP) emission standards are also excluded from this Executive Order. Therefore, Z-Industries Inc.'s General Motors Electronic Control Unit Program shall not be installed on the following 2001 model year General Motors engine families certified under the SFTP emission standards: 1GMXV03.8043, 1GMXV04.6065, 1GMXT04.3187, and 1GMXV05.7081 The General Motors Electronic Control Unit Program is a new fuel and timing calibration that is loaded into the vehicle's electronic control unit (ECU) on General Motors vehicles. For vehicles with removable PROM Chip, a new chip is installed. For vehicles with a non removable PROM Chip, the ECU is sent to Z-Industries and exchanged with a modified ECU.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-264-1
  • Executive Order 264-1 / D264-1
  • ARB # D-264-1
  • Executive Order No: D-264-1
  • C.A.R.B. No. D-264-1
  • Resolution D-264-1
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-264-1 PDF

D-264-1 Document:

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