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Re: ELM 327 OBD II -ECU connecting issue Posted by Viggener [Email] (#2101) [Profile/Gallery] (more from Viggener) on Sat, 22 Sep 2018 04:04:53 In Reply to: Re: ELM 327 OBD II -ECU connecting issue, Fredrik O, Sat, 22 Sep 2018 01:05:35 Members do not see ads below this line. - Help Keep This Site Online - Signup |
My understanding is that OBD II is the on-board diagnostics system that is in the car, and Tech II is the GM diagnostic tool that is used to read from the OBD II system and to change settings in the car's various system. Tech II is much more than a code reader.
Tech II is not specific to SAAB. It is a reader into which one inserts different data cards to work with any GM car since 1996 or so (in the US).
I believe OBD II and Tech II are still the system and tool used in new GM cars, but I am not sure, since I don't do new cars.
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