I would bet Grumpy has a link to what is (or one of) the best known Trouble Code reader/scanner and does it come with an ABS reader? I have an 04 5.3, 06 DuraMax, and I'm assuming the 06 Toyota uses the same OBDII and ABS readers as the domestic cars. I also have an 03 Jeep that you just turn the ignition key on and off 2.5 times and the code shows on the Speedo gage - wish others did this too.