Question about 1998 Chevrolet Monte Carlo

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My stoplight switch is out and i need to know how to replace it

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There should be a switch under the driver dash where the brake is. It would be at the back side of the brake.

Posted on Jul 14, 2009


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How to replace the brake light switch on a 1997 grand marquis



  1. Disconnect the wire harness at the connector from the stoplight switch.
NOTE: Locking tab on connector must be lifted before connector can be removed.
  1. Remove the hairpin retainer and slide the stoplight switch, the push rod and the nylon washers and bushing away from the brake pedal. Remove the stoplight switch by sliding the stoplight switch up/down as required to remove.
NOTE: Since the stoplight switch side plate nearest the brake pedal is slotted, it is not necessary to remove the brake master cylinder push rod and one spacer washer from the brake pedal pin.

  1. Position stoplight switch so that the U-shaped side is nearest the brake pedal and directly over or under the pin. Then slide stoplight switch down or up trapping the master cylinder push rod and black bushing between the stoplight switch side plates. Push stoplight switch and push rod assembly firmly toward brake pedal arm. Assemble outside white plastic washer to pin and install hairpin retainer to trap whole assembly.
CAUTION: Do not substitute other types of pin retainers. Replace only with a production hairpin retainer. Component damage may occur.
  1. Assemble the wire harness connector to the stoplight switch.
NOTE: Stoplight switch wire harness must have sufficient length to travel with stoplight switch during full stroke of brake pedal. If wire length is insufficient, reroute harness or service as required.
  1. Check stoplight switch for proper operation.

Dec 18, 2015 | 1997 Mercury Grand Marquis

2 Answers

Where's the po573 sensor on my Silverado 2008

Its your brake light switch which also kills your cruise control

Sep 24, 2015 | Cars & Trucks

1 Answer

My running lights are working just fine no brake lights any suggestions? 1999 Lincoln continental

Brake light switch ? Lighting control module , fuse's ?
The stoplight switch is protected by Fuse 32 (15A). This fuse is hot at all times. With the stoplight switch closed, power is provided to the stoplamps through the lighting control module through Circuits 9 (LG/O) and 5 (O/LB). Ground is provided to the stoplamps through Circuit 57 (BK).
Symptom Chart-Stoplamps
Refer to the Electrical and Vacuum Troubleshooting Manual for connector numbers cited in the pinpoint tests. Use Rotunda 88 Digital Multimeter 105-R0053 or equivalent to perform pinpoint tests.
Symptom Chart-Stoplamps Condition Possible Source Action
  • No Communication With Lighting Control Module
  • Circuitry.
  • Lighting control module.
  • GO to Pinpoint Test BA .
  • Stoplamps Inoperative
  • Open fuse.
  • Circuitry.
  • Lighting control module.
  • GO to Pinpoint Test
You may want to take to a repair shop !

  • Press stoplight switch.
  • Check stoplamps and rear high mount lamp.
Are lamps on? Yes No RELEASE switch and make sure that lamps turn off. CHECK Fuse 32 (15A). REPLACE open fuse if open, RESTORE vehicle, RETEST. If fuse is good, GO to BB2 . BB2 TEST STOPLIGHT SWITCH INPUT
  • Connect Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent to data link connector.
  • Enter diagnostic data link.
  • Enter lighting control module.
  • Enter PID/data monitor and record.
  • Select PID: BOO_LCM - Stoplight Switch Status.
  • Hold stoplight switch.
Does data display read ON? Yes No GO to BB5 . GO to BB3 . This is with a factory scan tool , a code reader will not work !
  • Test for voltage at input Circuit 10 (LG/R) to stoplight switch connector C253 .
Is B+ present? Yes No GO to BB4 . SERVICE Circuit 10 (LG/R) feeding stoplight switch. RETEST system. BB4 TEST VOLTAGE OUTPUT AT STOPLIGHT SWITCH
  • Test for voltage at output Circuit 511 (LG) of switch connector C253 .
  • Press stoplight switch.
Is voltage B+ at the switch? Yes No SERVICE Circuit 511 (LG). RETEST system. REPLACE stoplight switch. RETEST system. BB5 TEST POWER TO LIGHTING CONTROL MODULE
  • Disconnect connector C207 from lighting control module.
  • Test for voltage at connector Pin C207 , Circuit 907 (Y/W) and Pin C207 , Circuit 906 (R/O).
Is voltage B+? Yes No GO to BB6 . SERVICE Circuits 906 (R/O) and/or 907 (Y/W). RETEST system. BB6 TEST OUTPUTS
  • Using jumper wires, short Pin C207 , Circuit 907 (Y/W) to Pin C207 , Circuit 9 (LG/O). Using jumper wires, short Pin C207 , Circuit 906 (R/O) to Pin C207 , Circuit 5 (O/LB).
Do stoplamps illuminate? Yes No REPLACE lighting control module. RETEST system. SERVICE Circuits 5 (O/LB) and 9 (LG/O) for open circuit or damaged bulbs. REPLACE open bulbs as necessary. RESTORE vehicle, RETEST. This is Lincoln factory service info !

Jul 04, 2015 | Lincoln Cars & Trucks

1 Answer

Rear passenger stoplight and turn signal won't operate even after replacing bulb, flasher switch

Check the wiring to the bulb. There may be a broke wire shorting out.

Feb 20, 2013 | 1997 Buick LeSabre

1 Answer

Stoplight switch replace

Go under the dash and it is above the brake pedal arm. It is really easy to access and replace, excel;t the part about being upside down.

Aug 09, 2012 | 2000 Cadillac Catera

1 Answer

My back lights won't turn off on my toyota tercel

  • Push the driver's seat as far back as possible, allowing you to lay on the floor on the driver's side.
  • 2 Shine a flashlight at the top of the brake pedal stalk and find the stoplight switch. It will be a plastic cube either connected to the brake stalk or directly opposite the brake stalk, depending on the vehicle.
  • 3 Depress the brake pedal and feel where the brake light switch contacts the stopping plate, a metal plate in direct line with the stoplight switch.
  • 4 Feel for an open hole where the stoplight's plunger-style button presses. If a hole is present, you simply need to replace the rubber stopper.
  • 5 Press and release the plunger-style button on the brake light switch and ask an assistant if the brake lights are turning off and on. If not, the switch is bad and must be replaced.
Stoplight Switch Stopper Replacement
  • 1 Clean out any remaining debris left behind by the old stopper from the hole that the stopper goes into.
  • 2 Press the new stopper into the hole on the metal plate until it snaps into place.
  • 3 Shine the flashlight on the stopper and check that it sits flush against the metal plate.
  • 4 Press and release the brake pedal and ask your assistant if the brake lights are turning off and on.
  • 5 Replace the stoplight switch if the lights continue to stay on.
Stoplight Switch Replacement
  • 1 Loosen and remove the bolts holding the stoplight switch in place. It could be between one and four bolts depending on the vehicle.
  • 2 Pull the stoplight switch from its mount. Disconnect the wiring harness from the stoplight switch by pressing or pulling the locking tab and puling the harness away from the switch.
  • 3 Plug the wiring harness into the new switch until the locking tab clicks into place.
  • 4 Place the new switch on the mount the old switch was removed from and tighten the bolts with a ratchet and socket.
  • 5 Press and release the brake pedal several times and have your assistant check for proper operation.

Oct 31, 2011 | 1993 Toyota Tercel

1 Answer

Does any one know how to replace the break light switch on a 97 ford taurus?

My 97 Taurus manual gives these generic instructions...

To replace a stoplight switch, first determine what type of switch you have.

If you have an electrical switch mounted to the brake pedal in the passenger compartment:

* Unscrew the switch.
* Unplug the wires.
* Replace with a new switch. Adjust as needed.
* Plug the wires back in.

If you have a hydraulic pressure switch that is mounted in the brake master cylinder:

* Mark and disconnect the wires.
* Unscrew the switch.
* Screw the replacement switch in.
* Reconnect the wires.

Sep 03, 2011 | 1997 Ford Taurus

1 Answer

Brake lights don't work how to fix

When a vehicle's brake lights all go out at the same time, the culprit is usually the
"stoplight Switch" which is operated by depressing the brake pedal.

To replace a stoplight switch, first determine what type of switch you have.
If you have an electrical switch mounted to the brake pedal in the passenger compartment:
  • Unscrew the switch.
  • Unplug the wires.
  • Replace with a new switch. Adjust as needed.
  • Plug the wires back in.
If you have a hydraulic pressure switch that is mounted in the brake master cylinder:
  • Mark and disconnect the wires.
  • Unscrew the switch.
  • Screw the replacement switch in.
  • Reconnect the wires
Here's a picture of the "Stoplight Switch", aka Brake Light Switch - 1995 GMC K1500 Sierra


Brake lights (stoplights) are activated by a mechanical switch on the brake pedal.
To test a suspected bad stoplight switch, bypass it with a jumper wire. The stoplights should light when the wires are connected. Use the test light to see if there is power at one of the lights.
  • If the lights come on when the wires are connected but not when the brakes are applied, replace the switch.
  • If the stoplights operate without the key on, remove the stoplight fuse before removing the switch.
  • If the new switch is adjustable, adjust it so that it is open when the pedal is released.lights should come on about 1/4" after the pedal is applied.

Feb 20, 2011 | 1995 GMC Sierra

1 Answer

No brakes. All lights working but brake lights. Replaced stoplight switch, checked fuels and replaced brake light relay. Still no brake lights

Check the adjustment of the stoplight switch to make sure it's totally releasing and check the ground in your rear light assembly.

Did they work and just quit??

Aug 05, 2010 | 1997 Chevrolet C1500

1 Answer

No brake lights

if third brake lt works it wouldn't be stoplight switch, either a wiring problem or the modules went bad again, do you have power at the modules when they are unplugged

Nov 12, 2008 | 1999 Chevrolet Silverado 1500

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