OP
OP
swathdiver
Full Access Member
Need a little help here. Just got in my Tech2 clone from China Car Diags. While exploring, I can see somethings. For other areas, I get this message.
One example is when I’m accessing the TCM. The initial attempt was without the CANdi module, but the Tech2 told me it was missing.
I’m sure (hoping) it’s operator error. Any help is appreciated. I did review a couple videos to familiarize myself with hooking it up. Let me know additional info needed to help.
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Which module specifically gave you this message? Do you have it as an option on your car? Did you try it with the ignition on or off or with the motor running?
When "building" a 2012, did you use the chassis code "2" for 4WD?
Mine used to talk to GMT800 and other like vehicles but does not regularly do so anymore. I think it has something to do with my VCI Module but am just guessing. After four years I have replaced the PCMCIA card, several OBDII connectors and the cable. But I still use the old cable and both PCMCIA cards are installed in the slots should I need to swap them for whatever reason. It has seen almost daily use for four years.
Once you build the truck, a main menu comes up, my memory fails me at the moment as to what it is called but you want to select the last option. This option queries all installed modules and checks them for trouble codes. My Yukon has 28 modules but not all are active like side blind zone alert (Denali option my year) and the Sierra has 24 modules including for rear heated seats when it has none. At the end of the search, it will start over or give you the option of viewing the codes it has found. While querying the modules, some of them it will say cannot communicate with, which usually means it is not there or it is dead. I've never seen the latter.
