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International Automotive Technicians Network
Re: Diagnostics on 2003 C6500
Posted to HD/Fleet Forum on 6/2/2008 2 Replies

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CAT ET will interface this truck via the J1962 datalink. If it has an Allison, DOC will interface through that link as well. ABS depends on the manufacturer of the system. AFAIK, the TechII won't do ... Login to read more.

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