Why is my gmc abs light on?

Asked by GuruPH26R Feb 05, 2020 at 08:16 PM about the 1999 GMC Suburban K1500 4WD

Question type: General

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
it....

1 Answer
35,395

lrodri911 answered 4 years ago

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.

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