ABS and sensors

Asked by May 12, 2016 at 08:57 PM about the 2004 Pontiac Grand Prix GT2

Question type: Maintenance & Repair

I have  a 2004 Pontiac Grand Prix GT it has about 170,000 miles. Last week
I was driving it and the ABS started kicking in every time I apply my
brake...no ABS light or TC light came on. My check engine has been on for
a while so I took it in and got codes P0030 for 02 Sensor P0327 Knock
Sensor bank 2 and P0336 for crankshaft position sensor......anyone know if
there are two knock sensors? I only found the one on back part of
motor...how are those changed? Do I need to drain anti freeze? Would
knock have anything to do with the ABS coming on...I read somewhere that
it had to do with the ECM and ECM had something to do with ABS.....I think
it was ECM....Thanks for ur help :)

4 Answers


Are you sure it's the ABS kicking in? It could just be warped brake rotors.

hmmmm idk now! I can feel it in pedal.....like locking I guess

pretty sure its ABS..it only does it when applying brake it sounds like ABS kicking on.. no vibration in steering or when going down road also,no ridges in rotors it could use new ones but they are not bad bad. any other thoughts???? will check again just to be sure


Warped rotors or unevenly worn pads can also cause the vibration feel - and all of these will only be felt when you apply the brakes. ABS sensors tell the car to apply braking to a single wheel to regain traction in a single axle.

Your Answer

Add photo

Related Questions

  • ABS lights 3 answers

    My abs, service traction lights come on sporadically. Don't stay on, sometimes don't come on at all. My brakes seem to be OK. Is it the sensor, or can it just be reset. I don't know, I am a woman, ...

    2004 Pontiac Grand Prix GTP


    Maintenance & Repair

  • 2002 Pontiac GP SE - ABS & Trac lights on. How do I reset sensors? 2 answers

    I have had all 4 wheel bearings replaced, along with ABS sensors. Lights still come on & stay on.

    2002 Pontiac Grand Prix SE


    Maintenance & Repair

  • ABS light is on but brakes are almost new 2 answers

    replaced rotors and pads just a couple of thousand miles ago. Now abs light is on.

    2002 Pontiac Grand Prix SE


    Maintenance & Repair

  • ABS and brake lights symbols on 2 answers

    took car to repair brakes mechanic stated brakes were fine but the ABS and Brake lights symbol stays on

    2004 Pontiac Grand Prix


    Maintenance & Repair

  • Abs 1 answer

    My absence light stays on had it check no abs codes what could it be

    2005 Pontiac Montana SV6 Base AWD Minivan


    Maintenance & Repair

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 3,754 nationwide Grand Prix listings starting at $1,195.


Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Reputation 3,770
#2 Tom Demyan
Tom Demyan
Reputation 2,520
#3 munron
Reputation 2,010
View All

Related Models For Sale

Used Chevrolet Impala
929 Great Deals out of 36,399 listings starting at $1,800
Used Pontiac Bonneville
3 Great Deals out of 668 listings starting at $2,298
Used Chevrolet Monte Carlo
16 Great Deals out of 1,731 listings starting at $1,695
Used Pontiac G6
132 Great Deals out of 4,947 listings starting at $999
Used Pontiac Grand Am
1,718 listings starting at $1,995
Used Chevrolet Malibu
1,098 Great Deals out of 79,566 listings starting at $2,495
Used Ford Mustang
682 Great Deals out of 38,461 listings starting at $1,963
Used Pontiac GTO
9 Great Deals out of 493 listings starting at $5,900
Used Chrysler 300
495 Great Deals out of 20,895 listings starting at $1,500
Used Nissan Maxima
406 Great Deals out of 25,102 listings starting at $1,500
Used Jeep Grand Cherokee
1,136 Great Deals out of 70,014 listings starting at $495

Used Cars For Sale