Question about 1997 GMC Sierra

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My problem is on the brake light switch everithing started when i replaced brackes booster didn't put the retainer clip back week later i start to have problems can't get it off parking is an automatic 97 gmc sierra what i see is the pedal does not make contact with the brass piece in the switch it fits lil loose is there a bushing going in the pin where the switch attaches

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  • GMC Master
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I think that it requires a new retainer on the brake pedal stud.

--- Brake Light Switch Removal & Installation To Remove:

  1. Disconnect the negative battery cable.
  2. Disable the air bag system. Refer to Chassis Electrical.
  3. Use snap ring pliers to remove the pushrod retainer from the stud on the brake pedal.
  4. Unsnap the brake light switch from the pushrod.
  5. Disconnect the electrical connector from the brake light switch.
To Install:
  1. Connect the electrical connector to the brake light switch.
  2. Snap the brake light switch on the pushrod.
  3. Install a new retainer on the brake pedal stud. Use a 7/16 in (11 mm) socket to push the retainer on the stud.
  4. Connect the negative battery cable.
  5. Enable the air bag system. Refer to Chassis Electrical.

Posted on Oct 08, 2010

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2 Answers

How can I remove the brake booster linkage from the brake pedal?


the fsm covers this. (fact.serv. man)
ill paste the words, the book is free. to read.
booster out steps are there in chapter BRAKES
http://www.morris4x4center.com/knowledge-base/index.htm?utm_source=cj#service
chapter 5
page 22
quote
POWER BRAKE BOOSTER REMOVAL
(1) Loosen but do not remove nuts attaching master
cylinder to booster (Fig. 3).
(2) Remove instrument panel lower trim cover.
(3) Remove retaining clip attaching booster push
rod to brake pedal (Fig. 4).
(4) Remove bolts/nuts attaching booster to dash
panel.
(5) In engine compartment, loosen vacuum hose
clamp and disconnect vacuum hose from booster
check valve (Fig. 5).
(6) Remove master cylinder attaching nuts and remove
cylinder from mounting studs on booster
(7) Carefully move master cylinder aside and remove
booster.
end

the clip is here.
the book is free, to read, and posted over 100 times now...


26142841-rrsfqd2upyiwrqbf5erfo4d2-4-0.jpg

Mar 27, 2016 | 1993 Jeep Wrangler

1 Answer

How do u change the brake booster on a 99 Monte carlo


Hi Michelle, Im AL the owner of Big As Auto Repair.

This is an easy task with the correct tools.

First, pump the brakes 20 times with the key off. Next, remove the 2 nuts that hold the master cylinder in place. Next, pull the master cylinder back and out of the brake booster. Next, go inside the vehicle and on the brake pedal arm you see the brake booster rod attached to the brake pedal arm by a retainer clip. Next, remove the clip and slide the rod away from the pedal arm. Next, around the brake booster rod at the firewall you'll see 4 nuts you'll need to remove those 4 nuts then push the booster backward out of the firewall. Next, go back under the hood and pull the booster past the master cylinder. NOTE: You should have enough room to force the booster past the master cylinder. Replace the new booster and hook up the vacuum hose and your done. Hope this helps and please visit my auto-repair-website here: http://www.bigasautorepair.com/

Dec 11, 2015 | Cars & Trucks

1 Answer

How do I replace the brake switch on 98 C 1500 Chevy on brake pedal above steer column and the switch retainer clip


I just bought a 98 2500. Brake switch works, but I don't have the clip to keep switch inplace (which is on a peg attached to brake pedal). I just need the clip. I assume it would be a moon shaped clip that snaps on the end of the "peg." Once white brake switch is inserted onto the peg (swicth has a whole in it that fits onto peg) then clip snaps onto end of peg left exposed after brake switch is in place. As you apparently know, If that swicth slides off the peg or is bad, you can't put it in gear.

Feb 05, 2013 | Chevrolet 1500 Cars & Trucks

1 Answer

Replace brake booster


here you go...

The power brake booster is a tandem vacuum suspended unit. Some models may be equipped with a single or dual function vacuum switch which activates a brake warning light should low booster vacuum be present. Under normal operation, vacuum is present on both sides of the diaphragms. When the brakes are applied, atmospheric air is admitted to one side of the diaphragms to provide power assistance.
REMOVAL & INSTALLATION

1994-97 Models
See Figures 1 and 2
  1. Apply the parking brake and block the drive wheels.
  2. Remove the master cylinder-to-power brake booster nuts, then reposition the master cylinder and combination valve out of the way; if necessary, support the master cylinder on a wire to prevent damaging the brake lines.

When removing the master cylinder from the power brake booster, it is not necessary to disconnect the hydraulic lines, therefore the brake system should not have to be bled.
  1. Disconnect the vacuum hose from the power brake booster.


12_11_2011_8_48_59_pm.gif

Fig. Fig 1: Common power brake booster attachment


  1. From under the dash, remove the retainer and washer from the brake pedal on 1994 utility models. On all other models, remove the retainer and brake switch from the brake pedal.
  2. Disconnect the pushrod from the brake pedal.
  3. From under the dash, remove the power brake booster-to-cowl retaining nuts.
  4. Back under the hood, remove the power brake booster and the gasket from the cowl.

To install:
  1. Position the booster to the cowl using a new gasket.
  2. Install the bo oster retaining nuts and tighten to 16 ft. lbs. (22 Nm) 1994 utility models, 24 ft. lbs. (32 Nm) on 1994 pick-up models and 27 ft. lbs. (36 Nm) on all 1995-97 models.
  3. Connect the pedal pushrod and install the washer or switch and the retainer.
  4. Connect the vacuum hose.
12_11_2011_8_52_07_pm.gif

Fig. Fig. 2: Checking the piston booster rod using the gauge tool

  1. For all vehicles cover ed in this guide, gauge the booster rod:
    1. Apply 25 in. Hg (85 kPa) of vacuum using a hand held vacuum pump or apply maximum engine vacuum.
    2. Chec k the maximum and minimum rod lengths using J-37839 or an equivalent pushrod height gauge.
    3. If the piston is not within limits, install a service adjustable piston rod and adjust it to the correct length.
  2. Reposition the master cylinder and combination valve bracket to the booster studs, then secure using the retaining nuts. For details, please refer to the master cylinder procedure located earlier in this section.
  3. Start and run the engine, then check for proper booster operation.

Dec 11, 2011 | 1996 GMC Jimmy

1 Answer

I need instrustion to install a brake switch


It is a generic Nissan brake light switch replacement procedure... the brake light switch on a Nissan Altima i.e. controls the illumination of the brake lights. Without the switch, the lights would not go on. The switch has no service life, so when it goes, it usually happens suddenly. New brake light switches can be obtained from Nissan or from a Nissan dealership.

1. Remove the cotter pin from the pin bolt that holds the brake pedal to the brake booster with a pair of pliers. There is a small cotter pin running through the brake pedal to brake booster connection. You need to pull this cotter pin out to remove the larger pin that holds the brake pedal to the brake booster.
2. Slide the pin out of the brake booster mounting bracket.
3. Pull up on the brake pedal to slide it out of the brake booster mounting bracket.
4. Remove the bolts holding the brake switch to the firewall using a socket wrench.
5. Remove the electrical connector on the brake switch by pulling it straight off the switch.
6. Slide the switch off the firewall.
7. Install the new switch. Installation is the reverse of removal. Make sure that you replace the cotter pin in the brake booster to brake pedal connection. The cotter pin prevents the retaining pin in the brake booster mounting bracket from coming off.

Hope helps (remember to rate this answer).

Mar 31, 2011 | Nissan Altima Cars & Trucks

1 Answer

How do you disconnect the brakebooster rod from the brake pedal on a 1998 4x4 z71chevy truck? how do you take the plastic conector off?? pics would help


  1. Remove the master cylinder from the brake booster. Use line wrenches and remove the brake lines on the master cylinder. Disconnect the electrical connector. Remove the nuts holding the master cylinder to the brake booster and remove the master cylinder. Lay it down with the line holes up to prevent leakage. The brake activator rod must be removed next---this is attached to the top of the brake pedal arm.
  2. There are two types of brake light switches. One is mounted remotely and has a button that is depressed by the brake pedal when it is released that creates an open circuit and turns the lights off. When the brake pedal is depressed, the button is released and allowed to extend, creating a completed circuit and turning the brake lights on. These are adjustable. All that needs to be done to adjust these switches is to adjust them where they are making contact with the arm of the brake pedal when the pedal is released. The second type is a switch that is directly attached to the brake pedal where the activator rod and pedal arm are attached with a through pin.
  3. Remove the bottom portion of the driver's side dash to gain access to the activator rod. Remove the clip or spring lock from the side of the pin holding the activator rod to the brake pedal. Disconnect the electrical connector to the brake light switch. Rotate the switch upward and dislodge the brake activator rod from the brake pedal arm. Remove the electrical switch. Using a long 3/8-inch drive extension with a swivel and a 15 mm socket, remove the four nuts under the dash on the firewall holding the brake booster to the firewall. Unplug the vacuum line to the booster and remove the vacuum booster from the firewall.
  4. Install the new booster, keeping the brake activator rod on the inboard side of the brake pedal arm. Go under the dash and install the nuts retaining the booster to the firewall and tighten. Install the brake switch over the brake pedal. Hold the electrical end up while the activator rod is pulled and inserted over the retaining pin on the brake pedal arm.
  5. Install the retaining clip on the retaining spring and connect the electrical connector to the switch. Install the lower dash panel. Install the vacuum hose to the brake booster. Install the master cylinder and tighten the nuts. Install the brake lines to the master cylinder and attach the electrical connector. Check the brake fluid level in the master cylinder and fill as necessary.
  6. Have someone sit in the car while you loosen the front brake line on the master cylinder. Have the person helping push the brake pedal to the floor and hold it there. Once the pedal is to the floor, tighten the brake line and repeat the procedure for the rear line. Recheck the level in the master cylinder and fill with brake fluid as needed.

Oct 29, 2010 | 1998 Chevrolet K1500

1 Answer

I have a 1995 tahoe and just replaced the brake power booster. I had to pry off the switch interruptor, which is located on the brake pedal, to remove to the power booster cable. I've got it all back...


The retainer that was damaged upon removal does not provide a ground path for the lights, however the spring tension does hold the switch in position.
These retainers are available at your local dealership as brake switch recalls are quite common on GM trucks.

Feb 26, 2010 | 1995 Chevrolet Tahoe

1 Answer

Brakes


have the brake booster rod hooked up then pull it out away from the brake pedal until the pedestal is flush with the hole opening in the brake booster rod. On your brake lamp switch you have a half opening on one side,put this side towards the pedestal first then slide it down over the brake booster rod until the front closed opening on the switch lines up with the pedestal and brake booster rod hole then push the switch and booster rod towards the pedal assembly and install the push pin clip.

Apr 07, 2009 | 1998 Ford Windstar

1 Answer

On my Oldsmobile Alero 2002, all the warning lights are on


You have probably clipped the data line for the computer. This is not a fix!! Just putting bandages where stitches belong!! Any questions just shoot back

Mar 24, 2009 | 2004 Oldsmobile Alero

1 Answer

Brake booster i want to replace it where do i start


remove retaining clip and slide the power brake push rod off the brake pedal pin, then remove booster to firewall nuts. installation is in reverse order.

Oct 19, 2008 | 1996 Chevrolet Lumina Mini

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