Question about 2005 Pontiac Grand Prix

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Changed the rear brakes and rotors in my 2005 Grand Prix GTP and now the warning lights for the anti lock brakes, emergency brakes, traction control are all lit up and dinging when the car starts. I hooked the sensor back up that was located on rotor, what am i missing?

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  • Pontiac Master
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Recheck the sensor most likely not properly hook up or attached to clip

Posted on Oct 06, 2009

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1 Answer

Trac control light on & anti lock lite came on same time stays on


That means there is a problem with the ABS , has DTC'S - diagnostic trouble codes in the EBCM - electronic brake control module . You need to have diagnostics run on it !
Traction Control/ Stabilitrak Off: Refer to ABS Description and Operation in Antilock Brake Systems
This vehicle is equipped with the BOSCH 5.3 antilock braking system.
The vehicle is equipped with the following braking systems:
?€¢
Antilock Brake System (ABS)


?€¢
Dynamic Rear Proportioning (DRP)


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Traction Control System (ETS) (w/NW7)


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Traction Control System (TCS) (w/NW9)


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Vehicle stability enhancement system (VSES)

Oct 04, 2015 | 2004 Pontiac Grand Prix GTP

1 Answer

Traction control light coming on on my 2005 pontiac grand prix gtp on first take off


No different than the last vehicle problem you had

Need to check for codes & diagnose the system with
the fault & find a problem & make the repairs

Trac Control is part of the ABS Braking System & may need professional tools, to get that modules codes,so save your time for free checking at the parts store, to be told nothing of value there

Sep 28, 2014 | 2005 Pontiac Grand Prix GTP

1 Answer

What does it mean when the "Reduced Engine Power", "Service Stability System" and "Traction Control" warning lights come on?


You may have to have the harness replaced. Be sure the connector innards stay dry.When they get wet the contacts will oxidize and start shorting to each other and also the oxide is an insulator causing connections to open. Good Luck, I had a water problem with a Ford Flex and even though covered under warranty since I was the second owner they would not honor it. It cost me about three grand so price things out before getting it fixed, the car may not be worth the investment.

Aug 24, 2014 | 2005 Pontiac Grand Prix GTP

1 Answer

Brake light warning, anti-lock brake system warning light and enhanced traction system warning light come on what are the possible problem


tone ring on axles or sensors at tone ring will cause this. Very hard to troubleshoot unless this is a visual clue like a broken ring or broken wire/connector. The tone ring is at the end of the CV boot on the front wheels. Not sure where they are on the back wheels for your car--maybe behibd the rotor? More questions, please ask.

Sep 08, 2010 | 2004 Pontiac Grand Am

1 Answer

The check trac control warning and track contr. light stays on while driving, is this brake pads?


It can be the pads. The wheel sensors count the revolutions of each wheel. On some rear drive differentials there is a sensor in the Differential that can go bad. But if the Brake pads are in pieces, the wheel sensors view can be blocked and the sensors lose count.

The Traction control will activate. Traction control can work in several ways. Some controls activate the rear brakes until both rear wheels are spinning the same RPM. This is destructive to the brake pads. Additional Traction control will cut the engine by choking it or interfering with the Ignition. When the rear wheels spin the same RPM, power is restored. This system is easier on the brakes.

The Emergency brakes are inside the rear Rotor if you have 4 wheel disc brakes. The sensors are in the Drum portion of the Rotors. A lot of Brake shops fail to check the E brakes because so much has to be disassembled. Your Mercury should have a Button on the dash to turn off the feature. Turn it off until you can have it checked.

Sep 03, 2010 | 2004 Mercury Montery

2 Answers

2005 Pontiac Grand Prix Traction Control Problem


hi sounds like a wheel speed sensor you will need to get a scanner to check for a ABS fault codes you may even have to get the person to monitor the wheel speeds with the scanner to find the wheel speed sensor that is dropping out most likely a front wheel speed sensor
hope this helps you

Nov 07, 2009 | 2005 Pontiac Grand Prix

1 Answer

Service variable effort steering warning is coming on.what do i do to service it? 2004 gtp


i have an ABS, Traction Control, and Variable Steering warning lights come on right after i put the car in drive and move forward.
2005 Pontiac Grand Prix

Aug 15, 2009 | 2004 Pontiac Grand Prix

2 Answers

Abs and traction control lights coming on


Its the abs sensor, if you encounter an ice patch or snow you won't even be able to stop because the pedal will will push back and make the rip grind noise. If you pull the ABS fuse out, you won't have ABS but you can stop and you won't have the grind noise and back pressure for now. Its safer to not have ABS when the sensor is faulty.

Simon Atari
simonkhpa@yahoo.com

May 06, 2009 | 2004 Pontiac Grand Prix

1 Answer

Problem with my cruise control and ABS light on 03 Explorer


Anti-Lock Control —Vehicles Built After 03/2002 The 3-channel anti-lock brake system consists of the following components:
  • front wheel speed sensors
  • front wheel speed sensor rings
  • hydraulic control unit (HCU)
  • Anti-lock brake control module (ECU)
  • rear wheel speed sensor
  • rear wheel speed sensor rings
  • yellow anti-lock brake warning indicator
The 4-channel anti-lock brake system with traction control and stability assist system consists of the following components:
  • active brake booster with integral solenoid
  • brake booster release switch
  • front wheel speed sensors
  • front wheel speed sensor rings
  • hydraulic control unit (HCU)
  • stability assist module (ECU)
  • stability assist event indicator
  • lateral accelerometer
  • longitudinal accelerometer (4x4)
  • rear wheel speed sensors
  • rear wheel speed sensor rings
  • steering wheel position sensor
  • yaw rate sensor
  • yellow anti-lock brake warning indicator
  • brake pressure transducer
  • traction control switch
---------------------------------------------------------------------
I suspect the abs issue is causing the speed control not to work if it happened at the same time the cruise control stopped working. When the yellow ABS light comes on, it means the ABS is dactivated. You may have a faulty accelerometer which senses acceleration and yaw (side to side lean). I have not seen a bad one but you said it is sensitive to acceleration.
I would unplug it and see what happens. The connector should have a small tab to depress so you can pull the connector out.
Here is where it is:

Accelerometer Removal and Installation
  1. NOTE: The accelerometer is located under the center, rear passenger seat carpet. (I think you have to remove seat for access).
    Cut the carpeting along the perforations.
  1. Disconnect the electrical connector.
  1. Remove the nuts and remove the accelerometer.
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Have dealer hook up tester and pull fault codes if you can't find an easy solution.
Some background info
  • A malfunction in the anti-lock brake system will cause the anti-lock brake control module to shut off or inhibit the system. However, normal power-assisted braking remains.
  • Malfunctions are indicated by the yellow ABS warning indicator in the instrument cluster.
  • The anti-lock brake system is self-monitoring. When the ignition switch is turned to the RUN position, the anti-lock brake control module will carry out a preliminary self-check on the anti-lock electrical system indicated by a three-second illumination of the yellow ABS warning indicator in the instrument cluster.
  • During vehicle operation, including normal and anti-lock braking, the anti-lock brake control module monitors all electrical anti-lock functions and some hydraulic operations.
  • Each time the vehicle is driven, as soon as vehicle speed reaches approximately 20 km/h (12mph), the anti-lock brake control module turns on the pump motor for approximately one-half second. At this time, a mechanical noise may be heard. This is a normal function of the self-check by the anti-lock brake control module.
  • Pedal pulsation coupled with noise while braking on loose gravel, bumps, wet or snowy roads is normal and indicates correct functioning of the anti-lock brake system.
  • Warning Lamp Indicator
    The anti-lock brake system (ABS) uses the yellow ABS warning indicator to alert the driver of a malfunctions in the ABS.
    The yellow ABS warning indicator will come on to warn the driver that the ABS has been turned off due to a symptom that exists in the ABS. Normal power assist braking remains but wheels can lock during a panic stop while the yellow ABS warning indicator is illuminated.

    -----------------------------------------
    Please report back, I am curious if that is what it is. Good luck

    Mar 03, 2009 | 2003 Ford Explorer

    2 Answers

    Abs and tcs off lights are on,


    These lights are on because the system has a fault and it has disabled itself, so you have no anti-lock brakes or traction control right now, you will have to have the system tested for trouble codes by a shop with the proper test equipment, a GM dealer is your best bet.

    Oct 29, 2008 | 1999 Pontiac Grand Prix

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