Yes my 2002 Chevy silverado the abs and the brake light is on I post a question my speedometer doesn't work you think it's my abs module is this the one under the drive side frame or the one under the master cylinder and what could be the connection that the abs has with speedometer tks for your ans

Speed odometer has nothing to do with ABS,it is a problem in it,s own,may be bad speed sensor or even bad speedodmeter in dash,the ABS on these truck,s if brakes pads are good,and ABS light is on,it will be of the ABS sensor,s or could be your internal rear drum brake for your emergency brakes that is causing it,may be bad if not changed.