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IHR has a longtime experience in testing a multiplicity of General Motors Group control unit, using their own GM Local Area Network (GMLAN).


GMLAN is an application and transport layer protocol, based on the classic CAN format. During the conformance test, IHR supports you in testing either in high speed mode, mid speed mode or low speed mode, depending on the test device (control unit) and according to GM specification GM 14241.


IHR is able to offer you a completely automated diagnostic test according to GM specification GM W3110. Furthermore, we have the expertise to test your ECU according to CG2474, which is the leading specification for components and diagnostics in the GM group. This conformance test is a mandatory demand for all ECU`s to fulfill the GGSE ECU Diagnostic Infrastructure Requirements.

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