The USB Link 2 offers many features

The NEXIQ USB Link 2 is much improved design. We are sure that it will sell very well for a long time given its history and distribution network. If you are looking to purchase one, you can check it on www.obd2tool.com . We have heavy duty truck diagnostic tools in stock, ship very quickly, and help support them after!
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The Tech 2 is used for GM Vehicles from 1992-present.  It is kept up to date by updating the 32  MB Pcmcia memory card with the latest diagnostic software.  Current cars with the CAN bus require the CANDI interface for the Tech II to communicate with the vehicle.

The USB Link 2 offers many features including:  RP1210A, RP1210B, RP1210C and J2534 API support, Bluetooth vehicle-to-PC wireless connectivity, USB vehicle-to-PC connectivity, Protocol coverage for automotive to heavy duty vehicles:, 3 CAN – J1939/CAN125/CAN250/CAN500/CAN1000, Automatic bit rate detection for all standard CAN channels, Single Wire CAN, Fault Tolerant CAN, J1587/J1708,  J1850,  ISO 15765 (Diagnostic CAN),  ISO 14230 (KWP2000 over ISO9141), J2534, ALDL, ATEC 160 (160 baud), and Supports Windows 7 32- and 64-bit versions, and Windows 8 32- and 64-bit versions.

A Tech 2 costs — pick a number.  New models appear to cost as much as $4K, and the retail price is shown as even higher — as much as $8K or $9K depending on the site.  Discount new units are available for as low as $2300 on ebay for example, and used units run a bit less.  There appears to be a market in Chinese clones for the GM Tech 2 Scanner and software, although I am opposed to piracy of intellectual property.  My impression from shopping is that you should budget around $2K for an authentic Tech 2 in good condition with all accessories, 32 MB card, and CANDI module.

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