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Table C32: Definition of Boot Software Part Number Alpha Code dataIdentifier
DID Description
R/W
Data Type Len
$D0 
BootSoftwarePartNumberAlphaCode
R
ASCII
2
This DID contains the 2-character representation of the Alpha Code (or Design Level suffix) associated
with the BootSoftwarePartNumber (stored in dataIdentifier $C0).
Position
1 2 ---
BootSoftwarePartNumberAlphaCode RS ---
Hex value
52 53 ---
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GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
Table C33: Definition of Software Module Identifier Alpha Code dataIdentifier
DID Description
R/W
Data Type Len
$D1 
SoftwareModuleIdentifierAlphaCode (SWMIAC)
R
ASCII
2
to
$DA
DIDs ranging from $D1 to $DA contain a 2-character representation of the Alpha Code (or Design Level
suffix) for the corresponding Software Module Identifier (SWMI). The SWMIs occupy the dataIdentifier
range $C1 thru $CA. Reference the SWMI DID description for the numerical relationship between the
DIDs used for the SWMI and the corresponding SWMIAC.
•
$D1: SoftwareModule_01_AlphaCode
•
$D2: SoftwareModule_02_AlphaCode
•
$D3: SoftwareModule_03_AlphaCode
•
$D4: SoftwareModule_04_AlphaCode
•
$D5: SoftwareModule_05_AlphaCode
•
$D6: SoftwareModule_06_AlphaCode
•
$D7: SoftwareModule_07_AlphaCode
•
$D8: SoftwareModule_08_AlphaCode
•
$D9: SoftwareModule_09_AlphaCode
•
$DA: SoftwareModule_10_AlphaCode
The SoftwareModuleIdentifier Alpha Code shall be specified by the vehicle manufacturer.
Position
1 2
Alpha Code
RS
Hex value
52 53
Table C34: Definition of End Mode lPart Number Alpha Code dataIdentifier

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