How do I replace a break light pedal switch on my 2001 GMC Sierra

SOURCE: 1997 GMC Sierra Ignition Switch Replacement

take off the cover on the top and bottom of the steering column just behind the wheel. pop the tilt lever out simply just by grabbing it and give it a good tug. then once you have the new switch and you get in there your going to need an inverted torx socket to remove the small bolts that hold the switch to the column. do not move the gear on the new switch make sure it lines up exactly as the old one did!!!!!!!!!!!!

SOURCE: Power Window in a 2001 GMC Sierra Extended Cab

i just changed my unit on drivers side door man it was a pain well first it started off with not going at all i thought it was the motor but motor was good the wire was just getting hung up because the plastic piece broke on the track,so first disconnect motor from track and hit switch to see if it turns,and if not then replace motor,be careful not to loosen the cable.you almost need it exact tension for the track to work right.   

SOURCE: 2001 GMC SIERRA . ABS LIGHT STAYS ON

Wheel speed sensors misadjusted, damaged , or metal shavings and other debree, since they are magnetic can give false readings from one of the wheel circuits. Over sized tires can give of false speed readings as well. there are many other causes including bad relay, control module, e.t.c. It is best to have the proper scan tool to diagnose an ABS problem

SOURCE: replace door speaker 2001 gmc sierra

pull your door panel off and unscrew the speaker and disconnect the connectors to speaker 

SOURCE: ABS problem with GMC 2002 Sierra

its a low speed abs activation the problem is in the front sensors they need to be cleaned or replaced they [or one] probably has some corrosion on the sensor --[the 99 chevy tahoes had a limited recall over this issue and the fix was to remove and clean the abs sensor or if to corroded replace ] this problem doesnt set off an abs code or trouble light also sometimes the abs will activate by itself at under 4 mph without even touching brake