Bleed brakes. Pedel is hard- start truck brake pedal turns to mush what's up with this?
Sounds like there is air in the ABS system. The only way to bleed this is with someone (a shop) who has a code analyzer, scanner capable of bleeding the ABS unit. The analyzer would have a program to cycle the ABS solenoids to bleed the air threw. There is no way you can do this without this tool.
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