I have a 1996 General Motors vehicle and the scan tool wont connect or all the values wont display with my Generic OBD II Scan Tool or my GM Enhanced OBD II scan tool. What can I do?
Most GM vehicles allow packing of parameter data for faster information. Some vehicles do not. If the scan tool cable status says Connected and you have the correct COM port selected and you still wont connect, you can try the following: If you have GM Enhanced professional version 1.0.7.62 or later, or GM Enhanced personal version 1.0.7.65, or OBD II Generic professional version 1.4.10.42, or OBD II Generic personal version 1.4.10.45 or later, then under the Options menu on the parameter grid screen, select Fast Data Packets so that the check mark is no longer on and then reset the tool. The tool should now connect.
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