1998 Pontiac Grand Prix Logo

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Wes Hohlenkamp Posted on Feb 08, 2018
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Can shift out of park without foot on brake pedal. owners manual describes a check for brake-transaxle interlock switch and says if you can do this there is a problem. where would the problem be? ignition switch, brake switch or something in console shifter. thanks wes

2 Answers

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  • Pontiac Master 2,931 Answers
  • Posted on Feb 08, 2018
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Have you performed work on the vehicle lately? Had the console out (assuming a floor shifter) for any reason?
If yes, it is possible that you have the cable (between ignition switch and shifter) out of adjustment.
If you suspect the brake pedal switch, are the brake lights also stuck on? Do the brake lights illuminate when you depress the brake pedal? Will the cruise control set? Use these three questions to troubleshoot if the pedal switch is functional.
If this just suddenly began, then I would suspect the brake pedal switch.

Try these things and report back for assistance.


can shift out of park without foot on brake pedal. - helpful-rowrfu10slju0iejfqxy2apg-1-0_7.png

artie g

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  • Pontiac Master 873 Answers
  • Posted on Feb 08, 2018
artie g
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Probably the interlock solenoid or the wiring to it. Usually if the solenoid is working you can hear it click when you put your foot on the brake and it is in park. It usually defaults to the locked position when not activated. yours is the opposite so it my be stuck open. They are usually located in the console shifter and are wired to the brake switch..check both.

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5 Related Answers

Anonymous

  • 4 Answers
  • Posted on Sep 13, 2008

SOURCE: 1997 Pontiac Sunfire (automatic) transaxle

I do not know what you are looking at in the manual, but you probably heard a horrible noise when you put it into park, as the parking pawl tries to hold the car in place. Thist usually does not harm the transaxle. If the engine won't start then something else happened, perhaps the neutral safety switch was damaged or knocked out of adjustment. You might try to move the shifter back and forth and then back into park and then try to restart. If that doesn't work try to put the car in neutral to start. If you must have the car towed somewhere the repair should not be expensive, just have them reset the neutral safety switch.

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Anonymous

  • 32 Answers
  • Posted on Dec 10, 2008

SOURCE: grinding and very hard to shift, and now the shifter is stuck

how does the clutch pedal feel?..clutch out of adjustment,needs clutch job...kev-mn.

Anonymous

  • 11896 Answers
  • Posted on Apr 23, 2009

SOURCE: key locked in ignition... can't get it out. HELP!

while in park, press harder up past park and it will disengage. Otherwise there is a pin on the ignition you can press and remove the entire ignition. You call also lightly tap gently around igniton piece to loose the pins inside that hold the key.

Anonymous

  • 99 Answers
  • Posted on Dec 16, 2010

SOURCE: Most of the time when shifting into park on 2002

you have either a faulty shifter assembly or the ignition shift interlock cable that runs between ignition cylinder and shifter assembly it is very common for the cables that causes this.

Anonymous

  • 12 Answers
  • Posted on Apr 17, 2011

SOURCE: The gear shift is locked

It has a brake-transaxle shift interlock. You should just push the brake in to shift, but if you have done that, and it still won't shift, with foot on the brake, push the shifter all the way into park. Sometimes they don't always go into park all the way. Also if you park on a hill, it puts pressure on the btsi, so you cant shift it. Have someone push the vehicle back, just enough to take the pressure off and it should shift. I had this happen to me with my Grand Am.

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Park neutral safety switch could be bad , also the shift interlock safety system .
Shift Interlock System A brake/shifter interlock system consists of the following:
  • ignition switch (11572)
  • brake pedal stoplight switch (13480)
  • brake shift interlock module
  • brake shift interlock solenoid assembly (attached to key interlock assembly)
  • necessary wiring
On floor-shift vehicles, the ignition/shifter interlock cable (3F719):
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  • requires the floor shift transaxle range selector lever to be in the PARK position to turn the ignition switch to the LOCK position.
Condition Possible Source Action
  • Shift Interlock System Does Not Release or Lock Properly
  • Circuitry open/shorted.
  • Blown fuse.
  • Damaged stoplight switch.
  • Damaged shift lock actuator.
  • GO to Pinpoint Test A .

PINPOINT TEST A: SHIFT INTERLOCK SYSTEM DOES NOT RELEASE OR LOCK PROPERLY A1 CHECK ELECTRON IGN FUSE
  • Check Fuse 5 (5A) located in fuse junction panel.
Is fuse OK?
Yes No GO to A3 . GO to A2 . A2 CHECK FOR SHORT TO GROUND
  • Turn ignition switch OFF.
  • Remove Fuse 5 (5A).
  • Disconnect shift-lock actuator connector C203 located to the right of steering column.
  • Measure resistance of the Circuit 1003 (GY/Y) between the correct terminal of Fuse 5 (5A) and ground.
Is resistance greater than 10,000 ohms?
Yes No REPLACE Fuse 5 (5A). GO to A3 . SERVICE Circuit 1003 (GY/Y) wire between fuse junction panel and shift-lock actuator. A3 CHECK POWER SUPPLY FROM FUSE 5 (5A)
  • Reinstall Fuse 5 (5A).
  • Turn ignition switch to RUN.
  • Measure voltage on Circuit 1003 (GY/Y) wire and ground.
Is voltage greater than 10 volts?
Yes No GO to A4 . SERVICE Circuit 1003 (GY/Y) wire between interior fuse panel and shift-lock actuator. A4 CHECK POWER SUPPLY FROM FUSE 28 (15A)
  • Turn ignition switch OFF.
  • Disconnect connector C2016.
  • Turn ignition switch ON.
  • Measure voltage on Circuit 10 (LG/R) and ground.
Is voltage B+?
Yes No GO to A5 . SERVICE Circuit 10 (LG/R) for open. RESTORE vehicle and RETEST system. A5 CHECK WIRE BETWEEN STOPLIGHT SWITCH AND SHIFT-LOCK ACTUATOR
  • Turn ignition switch OFF.
  • Disconnect shift-lock actuator connector C203.
  • Apply brake pedal.
  • Measure voltage on Circuit 810 (R/LG) wire and ground.
Is voltage greater than 10 volts with brake pedal applied and less than 1 volt with brake pedal released?
Yes No GO to A6 . SERVICE Circuit 810 (R/LG) wire between stoplight switch and shift-lock actuator. A6 CHECK SHIFT-LOCK ACTUATOR GROUND
  • Measure resistance of Circuit 57 (BK) and ground.
Is resistance less than 5 ohms?
Yes No REPLACE shift-lock actuator. SERVICE BK wire.
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Do you have floor console shifter ?
Shift Interlock System A brake/shifter interlock system consists of the following:
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Brake light switch , wiring etc... Do you know how to test automotive electrical circuit's using a wiring diagram an a DVOM -digital volt ohm meter ? Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. Year , make , model an engine size . Under system click on transmission / transaxle .Under subsystem click on shift interlock . Click the search button an then the blue link . Test the electrical circuits .
Shift Interlock System An ignition/shifter interlock mechanism is installed to prevent shifting the transaxle out of the PARK position unless the ignition switch is rotated to RUN and the brake pedal is applied. The floor shift interlock system consists of:
  • an actuator assembly integral to the ignition/shifter interlock cable assembly.
  • a bracket retaining the actuator.
  • the necessary wiring.
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Symptom Chart-External Controls
Use Rotunda 73 Digital Multimeter 105-R0051 or equivalent to perform pinpoint tests.
Symptom Chart-External Controls Condition Possible Source Action
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  • Blown fuse.
  • Damaged stoplight switch.
  • Damaged ignition/shifter interlock cable.
  • GO to Pinpoint Test A .
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Maybe you blew solid state module. There is a manual bypass.

Shift Interlock System A shift interlock mechanism prevents shifting the transaxle out of the PARK position unless the brake pedal (2455) is applied. The shift lock actuator is energized when the ignition switch is turned to the RUN position.
  • This locks the shifter in the PARK position.
  • When the brake pedal is applied and the stoplight switch (13480) is activated, the shift lock actuator is deactivated and the shifter can be moved out of the PARK position.
-----------------------------------------------------
  • Shift Interlock System Does Not Release or Lock Properly
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  • Circuit.
  • Shift lock actuator.
  • Gearshift lever adjustment.
  • Stoplight switch.

----------------------------------------------------------

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Car will not go out of park 2002 mountaineer is stuck in park - will crank but cannot put in gear

CLICK HERE FOR YOUR OWNERS MANUAL in PDF format.

Check your shift interlock switch on the brake pedal. If it is out of alignment or has failed the shifter will not unlock to enable a gear selection.

Also - a fuse may be blown, or you may have a taillight out.

You can manually unlock it in emergency situations.
Taken from P.181 of the manual......

Brake-shift interlock
This vehicle is equipped with a brake-shift interlock feature that prevents
the gearshift lever from being moved from P (Park) when the ignition is
in the ON position unless brake pedal is depressed.
If you cannot move the gearshift lever out of P (Park) with ignition in
the ON position and the brake pedal depressed:
1. Apply the parking brake, turn ignition key to LOCK, then remove the
key.
2. Locate the access cover plate to
the brake-shift interlock override. It
is located on the underside of the
steering column.
3. Rotate the access panel
(counterclockwise) with a flat head
screw driver until it is lined up to
the access hole in the open position.
4. Insert a tool (or screw driver) into the access hole to override the
brake-shift interlock. Apply the brake and shift into Neutral.
5. Return the cover plate (rotate
clockwise) to the closed position.
Start the vehicle.

If it is necessary to use the above procedure to move the gearshift lever,
it is possible that a fuse has blown or the vehicle’s brakelamps are not
operating properly. Refer to Fuses and relays in the Roadside
emergencies
chapter.




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