![]() But in certain diagnostic situations it can be an invaluable tool because it allows you to turn on and off hundreds of computerized settings to aid in the diagnosis process. It has layers and layers of menues to wade through. But you have to learn to use the tool like any other computerized diagnostic tool. Most of the diagnostic charts in the factory service manual assume the availability of a Tech 2. If you do or plan to do a lot of diagnostic work on your car it can be a worthwhile tool. But then those tools cannot touch the BCM either. It cannot go in and individually change the tuning tables in the PCM as can say either EFI Live or HP Tuners tuning tools. The extent to which it can be used to tune a C5 corvette is that if you have a PCM Image that will work for your car you can save the current PCM Image and flash the new one you have onto the PCM. It can be used to program out/in certain RPO’s in the BCM and can be used to bleed the ABS brake system without introducing air into the system. ![]() GM Tech 2 is a diagnostic tool for the most part. Answer for ” What can I do with a Tech 2 scan tool?”:
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