PROM CALIBRATION SERVICE ECM PART NUMBERS

VEHICLES AFFECTED: 1989 D/E/K/C/V --------------

These charts summarize all 1989 C, D, E, K, V, gasoline engine PROM calibrations to date. When any diagnosis leads to PROM replacement, the service PROM part number listed should be used. Should any additional PROM calibration changes be made, the CANSPO parts distribution system will automatically supersede these service part numbers.

PROM changes may be made for many different reasons. For instance, a calibration change may be made in conjunction with component changes, for a repair relative to a current field condition, or as a running change to provide minor modifications affecting driveability or fuel economy. Therefore, if a PROM I.D. is lower than the latest PROM available, it does not necessarily need replacement. Refer to the bulletin listed fo about the symptom that may require a PROM change.

1989 C, E, AND K EOUIPPED WITH 4.5L DFI V-8 ENGINE --------------------------------------------------

SERVICE ECM P/N 1228322

Production Service Latest Broadcast Code Broadcast Code Service PROM (PROM I.D.) (PROM I.D.) Part Number -------------- -------------- ------------ First Gen.: ----------- C Fed. ALCK (344) ALCK (344) 16086013 C Export ALCN (349) ALCN (349) 16084466 C Com. Chassis ALCM (348) ALCM (349) 16084456 E/K Fed. ALCP (1004) ALCP (1004) 16084476 E/K Export ALCS (1008) ALCS (1008) 16084496 E/K Fed. Opt. AMZA (1005) AMZA (1005) 16120846 Axle (GX3)

1989 V EQUIPPED WITH 4.5L PFI V-8 ENGINE ----------------------------------------

SERVICE ECM P/N 1227750

First Gen.: ----------- V ANZR (2002) ANZR (2002) 16129601

1989 D EQUIPPED WITH 5.0L CCC V-8 ENGINE ----------------------------------------

SERVICE ECM P/N 1228330

Service Latest Production Service PROM Service PROM Broadcast Code Broadcast Code Part I.D. Part Number -------------- -------------- --------- ------------ First Gen.: ----------- D Fed. ALUP ALUP 2182 16122177 D Cal. APSW APSW 2057 16132056

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.