Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on June 25, 1982.
As of Wednesday, February 5th, 2025 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
1975-1981 8V - 92TA DDAD GM heavy-duty engines 1976-1981 6V - 92TA DDAD GM heavy-duty engines

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-126
  • Executive Order 126 / D126
  • ARB # D-126
  • Executive Order No: D-126
  • C.A.R.B. No. D-126
  • Resolution D-126
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-126 PDF

D-126 Document:

CARB_D-126

{Page 1 of 2) State of California AIR RESOURCES BOARD EXECUTIVE ORDER D—126 Relating to Exemptions under Section 27156 of the Vehicle Code GENERAL MOTORS CORPORATION BV—I2TA AND 6V—S2TA GM—DDAD DIESEL ENGINE MODIFICATION "CUE" PACKAGE Pursuant to the authority vested in the Air Resources Board by Section 27156 of the Vehicle Code; and Pursuant to the authority vested in the undersigned by Sections 39515 and 39516 of the Health and Safety Code and Executive Order G—45—5; IT IS ORDERED AND RESOLVED: That the modification of 1975 through 1981 model 8VY—92TA and 1976 through 1981 model 6V¥—92ZTA General Motors Detroit Diesel Allison Division heavy—duty diesel engines has been found not to reduce the effectiveness of required motor vehicle pollution control devices. The modification will consist of replacing the OEM cylinder lTiner, gear train for blower drive gear, fuel injectors, blower, turbocharger, aftercooler, air inlet housing, throttle delay check valve, camshaft, and piston rings with corresponding parts utilized in 1982 California certified engines. It is hereby exempt from the prohibitions of Vehicle Code Section 27156. This Executive Order is valid provided that installation instructions for the "CUE" package will not recommend tuning the vehicle to specifications different from those submitted by the manufacturer. Changes made to the design or operating conditions of the "CUE" package, as exempted by the Air Resources Board, that adversely affect the performance of a vehicle‘s pollution control system shall invalidate this Executive Order. Marketing of the "CUE" package using an identification other than that shown in this Executive Order or marketing of the "CUE" package for an application other than those Tisted in this Executive Order shall be prohibited unless prior approval is obtained from the Air Resources Board. This Executive Order does not constitute any opinion as to the effect that the use of the "CUE" package may have on any warranty either expressed or implied by the vehicle manufacturer.

GENERAL MOTORS CORPORATION i EXECUTIVE ORDER D—126 (Page 2 of 2) THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION, ACCREDITATION, APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE AIR RESOURCES BOARD OF ANY CLAIMS OF THE APPLICANT CONCERNING ANTI—POLLUTION BENEFITS OR ANY ALLEGED BENEFITS OF THE GMC "CUE" PACKAGE. No claim of any kind, such as "Approved by Air Resources Board" may be made with respect to the action taken herein in any advertising or other oral or written communication. \ Section 17500 of the Business and Professions Code makes untrue or misleading advertising unlawful, and Sect1on 17534 makes violation pun1shab1e as a misdemeanor. Section 43644 of the Health and Safety Code provides as follows: "43644. (a) No person shall install, sell, offer for sale, or advertise, or, except in an application to the state board for—certification of a device, represent, any device as a motor vehicle pollution control device for use on any used motor vehicle unless that device has been certified by the state board. No person shall sell, offer for sale, advertise,cor > represent any motor vehicle pollution control device as a certified device which, in fact, is not a certified device. Any violation of this subdivision is a misdemeanor." Any apparent violation of the conditions of this Executive Order will be submitted to the Attorney General of California for such action as he deems advisable. ;V(f Executed at El Monte, California, this day of June ¥. D. Drachand, Chief Mobile Source Control Division

State of California AIR RESOURCES BOARD Staff Report June 15, 1982 Evaluation of General Motors Corporation‘s "California Upgrade for Economy" (CUE) Engine Modification in Accordance with Section 2222, Title 13, of the California Administrative Code. I. INTRODUET ION General Motors Corporation (GMC), of Warren, Michigan, has requested for an exemption from the prohibitions of California Vehicle Code Section 27156 for an engine modification program. GM proposes to make available an engine modification package, California Upgrade for Economy (CUE), for upgrading 1975 through 1981 model 8¥—92TA and 1976 through 1981 model 6V—92TA General Motors Detroit Diesel Allison Division (GM—DDAD) heavy—duty engines. The modification of these older engines will utilize some components of 1982 California certified SV—92TA and 6V—92TA GM—DDAD engines to a hybrid specification. The purpose of the CUE modification, according to GMC, is to improve performance and fuel economy. II. "CUE" PACKAGE DESCRIPTION GMC proposes, in their CUE program, to replace certain 1975 through 1981 OEM engine parts during a routine rebuild or a special rebuild solely for fuel economy improvement with components utilized on 1982 model year California ‘ certified engines. The parts which are to be upgraded are cyTinder Tiners, gear train (for the blower drive gear), fuel injectors, blower, turbocharger, aftercooler, air inlet housing, throttle delay check valve, camshaft, and piston rings. Tables I and II (attached) Tist these parts by GMC part numbers.

III. EVALUATION GMC did not submit any test data to show that the modification will have possible effects on emissions. In response to GMC‘s request, the staff reviewed the parts list and compared with GMC certification document to assure that the components used in the CUE package are those parts used in 1982 California certified engines. Because not all parts contained in the CUE package are listed in GMC‘s certification application, only a partial list of the parts were cross—checked and verified. It may be assumed that the other parts not listed in the certification application (cylinder Tiner, gear train for blower drive gear, air inlet housing, throttle delay check vaive, camshaft, and piston rings), when updated to the 1982 configuration which was designed to meet more stringent emission standards, will not have, if any, adverse effect on emissions. IV. DISCUSSION Per Air Resources Board (ARB) engine change policy (ARB Mail Out No. 81—040) pertaining to heavy—duty vehicles, an engine which is rebuilt to non—OEM configuration must be reviewed by the ARB and receive a written exemption prior to rebuild. Since the components replaced are currently utilized on certified 1982 engines, the staff is of the opinion that there will be no adverse effect on emissions during the rebuild of the subject engines. V. RECOMMENDAT ION The staff is of the opinion that the GMC engine modification package in the CUE program during rebuild of 1975 through 1981 model 8¥—92TA and 1976 through 1981 model 6V~92ZTA engines will not have any adverse effect on emissions. The staff, therefore, recommends that Executive Order No. D—126 be adopted.

1 im! GM—DDAD 6V Engine "CUE" Components 1982 1980—1981 1979 1977—1978 1975—1976 Nomenclature Replacement Part OEM Part OEM Part OEM Part OEM Part Cylinder Liner 5107176 Reuse Reuse 5104214 5148505 Gear Train 5122920 5122918 5122918 5122918 Reuse {(blower drive gear) Injectors 9F90—5226090 9C90—5229890 9B90—5229810 9A90—5229630 9A90—5229630 9C85—5229885 9B85—5229815 9A85—5229625 9A85—5229625 9C80—5229880 9B80—5229805 9A80—5229620 9A80—5229620 Blower 8923495 (1) 5101528 (1) . 5101528 (1) 5101528 (1) 5101528 (1) 8923497 (2) 5104936 (2) 5104936 (2) 5104936 (2) 5104936 (2) 8923496 (3) 5103854 (3) 5103854 (3) 5103854 (3) 5103854 {3) Turbocharger TV—7111 (1.23) TV—8102 (1.08) TV—8102 (1.23) TV—8102 (1.08) TV—8102 (1.08) . 8923051 5101151 5102353 5101151 5101151 Aftercooler 8923050 5101152 5101152 5101152 5101152 Air Inlet Housing 8923179 5101411 5101411 5101411 5101411 Throttle Defay 5103296 Reuse 5102155 5102155 5102155 {check valve) Camshaft 5108114 R/B 8921368 R/B Reuse 5107245 R/B 5107229 R/B 5108113 L/B 8921367 L/B Reuse 5107248 L/B 5107227 L/B Piston Rings 8923178 (4) 5100601 (4) 5100601 (4) 5100601 (4) 5100601 (4) 8923113 (5) 5100607 (5) 5100607 (5) 5100607 (5) 5100607 (5) 8923112 (6) 5144620 (5) 5144620 (5) 5144620 (5) 5144620 (5) 8923559 (7) 5102736 (6) 5102736 (6) 5102736 (6) 5102736 (6) 5102737 (6) 5102737 (6) 5102737 (6) 5102737 (6) 5144622 (6) 5144622 (6) 5144622 (6) 5144622 (6) 5102744 (7) 5102744 (7) 5102744 (7) 5102744 (7) {1): Front mount turbo (3): Back mount turbo (5): —Compression ring (7): Expander (2): Rear mount turbo (4): Fire rings (6): 011 ring

Tab . GM—DDAD 8V— Engine "CUE" Components 1982 1980—1981 1979 1977—1978 1975—1976 Nomenclature Replacement Part OEM Part QEM Part Part OEM Part Cylinder Tiner 5107176 Reuse Reuse 5104214 5148505 Gear train 5109602 5122920 5122920 5122918 5122918 (blower drive gear) Injector 9F90—5226090 9C90—5229890 9A90—5229630 9A90—5229630 9290—5229405 9C85—5229885 9AB5—5229625 9A85—5229625 9285—5229400 9C80—5229880 9A80—5229620 9A80—5229620 9280—5229180 Blower 8923474 (1) 5101483 (1) 5101483 (1) 5101483 (1) 5101483 (1) 8923475 (2) 5104937 (2) 5104937 (2) 5104937 (2) 5104937 (2) 8923476 (3) 5144787 (3) 5144787 (3) 5144787 (3) 5144787 (3) Turbocharger TV—8117 (1.39) TV—8101 (1.39) TV—8101 (1.60) TV—8101 (1.60) . TV—8101 (1.60) 8923340 5101508 5101513 5101513 5101513 Aftercooler 8923233 5101327 5101327 5101327 5101327 Air inlet housing 8923341 5122918 5122981 5122918 5122918 Throttle delay 5103296 Reuse 5102155 5102155 5102155 {check valve) Camshaft 5108116 R/B 8921370 R/B Reuse Reuse 5107231 R/B . 5108115 L/B 8921369 L/B Reuse 5107232 L/B Piston Ring 8923178 (4) 5100601 (4) 5100601 (4) 5100601 (4) 5100601 (4) 8923113 (5) 5100607 (5) 5100607 (5) 5100607 (5) 5100607 (5) 8923112 (6) 5144620 (5) 5144620 (5) 5144620 (5) 5144620 (5) 8923559 (7) 5102736 (6) 5102736 (6) 5102736 (6) 5102736 (6) 5102737 (6) 5102737 (6) 5102737 (6) 5102737 (6) 5144622 (6) 5144622 (6) 5144622 {6) 5144622 (6) 5102744 (7) 5102744 (7) 5102744 (7) 5102744 (7) {(1): Front mount turbo {(3): Back mount turbo (5): Compression ring (7): Expander (2): Rear mount turbo (4): Fire rings (6): 011 ring


Document Created: 2005-09-01 12:41:32
Document Modified: 2005-09-01 12:41:32

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