2001 chevy silverado 2500hd duramax 4wd p0700 code came up after changing rotors and pads on front

Were is the fusidle four reed code (OBD2)
no électricity four reed code ???

You may have disconnected / or moved a broken wire to the ABS wheel sensor during the brake job. Also taking the brake fluid cap off and checking the fluid level, and just reseating the cap may turn off the code. Check these things first, check the wires to the wheel sensors check the fluid in the reservoir, reservoir top fit, and any wires / plugs at the brake ABS master cylinder. If all else fails have some one read the code.