| Details |
| Document Number: |
J2740_200512 |
| Revision Number: |
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| Title |
| General Motors Uart Serial Data Communications |
| Scope |
| This Technical Information Report defines the General Motors UART
Serial Data Communications Bus, commonly referred to as GM UART.
This document should be used in conjunction with SAE J2534-2 in order
to fully implement GM UART in an SAE J2534 interface.
SAE J2534-1 includes requirements for an interface that can be used
to program certain emission-related Electronic Control Units (ECU) as
required by U.S. regulations, and SAE J2534-2 defines enhanced
functionality required to program additional ECUs not mandated by
current U.S. regulations. The purpose of this document is to specify
the requirements necessary to implement GM UART in an aftermarket SAE
J2534 interface intended for use by independent automotive service
facilities to program GM UART ECUs in General Motors vehicles.
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