Why is my gmc abs light on?
My 99 gmc 1500 suburban 4×4 has a abs
light on..speedometer acts erratically and
transmision seems to not be shifting into
other gears. Shifts hard, then rpm's go up like
it's trying to shift. I replaced 3 speed sensors
and both front abs sensors. Is there a abs
ground on this suburban? I cant seem to find
Instead of guessing and spending money on parts that don't need to be replaced, get it scanned and find out what the problem is. U'll need an ABS scanner.