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Need to know how to adjust rear brakes on 1990 gmc pickup

The brake pedal seems to go to far toward the floor. Think only front brakes work. Need to know how to adjust rear brakes

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  • Anonymous Mar 17, 2014

    When pressing buttons to adjust height of brake/accelerator pedals no movement either way, can hear clicking sound at adjustment motor with a minimal 1/4in. movement.

  • Anonymous Mar 29, 2014

    When replacing the rear brakes is there anything that needs to be done with the E brake such as adjustments ect... ?



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  • Master
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What year is the truck and does is have drum brakes or disk brakes in the rear if it is drum you can go thru the backing plate with a brake adjustment tool and adjust them until you feel drag against the drum when you spin the tire by hand

Posted on Apr 22, 2009


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1 Answer

Emergency brake not working after changing rear brake shoes on a 1990 gmc pickup 1500 series? And how do I release the emergency pedal from the floor? It won't release when you step on it?

Was the brake shoes replacement a DIY or professional job. If DIY, are you certain that you reassembled the brakes properly? Does the truck move at all? Does it feel as though the e-brake is applied? With the e-brake pedal to the floor, the truck should not move freely when the accelerator pedal is depressed. The emergency brake assemblies on both rear wheels are connected to a cable assembly that ultimately leads to the e-brake pedal. The cable has an adjustment point and a spring tensioner to prevent slack in the cable. First, crawl under and physically check the cable tension. If it's loose, either the cables are not connected to the rear wheels' brake assemblies, not connected properly, or the cable and/or pedal is damaged/broken. If the cable is tight - overly tight, but the e-brake is not holding the truck from moving, the e-brake levers attached to the shoes inside the brake drums are likely not installed correctly. Double check your installation and consider replacing the e-brake cable (as a precaution). As for the pedal, you may have to remove it in order to get the ratchet-locking mechanism to release.
Of course, if this was a professional job, call the shop and have them make it right. Good luck.

Oct 07, 2013 | Cars & Trucks

2 Answers

Brakes loosing pressure

Well first of you need to take it to where you got it done if you had pressure prior to taking it in to get the brake job done. If you had drum brakes done, it sounds as if the brakes were not adjusted. It is possible if anything to do with the hydrolics like whell cylinders or caliper replacement, you could be dealing with air in the lines because the system was not bled properly. Not sure what all you had done for $300 so just going with possiblities. Drum brakes have self adjusters. They adjust themselves when going in reverse and applying the brakes. You can kind of adjust them yourself by going at a pretttty good speed in reverse and applying the brakes kind of hard. Don't slam on them to lock them up. Just get going at a pretty good (safe) rate of speed in reverse. Try to come to a prettty quick but smooth stop. Do this several times. If this seems to help the pedal not going to the floor, adjustment may be the problem. If you had any work on the hydrolics and it wasn't bled correctly or there is a leak, this procedure will not work. In any case I personally think you should take it back to where you got the work done and have them correct it at no cost to you.

Nov 22, 2012 | 1986 Toyota Pickup 4WD

1 Answer

Soft brake pedal on 1990 GMC Sierra. Replaced master cylinder, rear shoes are almost new, front pads are good.

if master replaced sounds like air still in lines rebleed the brake lines start with passenger rear than driver rear -pass front -than driver front last..before bleeding check rear brake shoes are adjusted correctly

Aug 10, 2011 | 1990 GMC Sierra

1 Answer

I replaced all 4 brakes on my 98 chevy malibu. for some reason i am not getting pressure back. but am being told i dont need to bleed the brakes. should i anyway. or could the adjusted on the rear drums...

Both air in the brake lines and rear drums too far out of adjustment will cause the pedal to go to the floor repeatedly.

Bleed from the wheel that's farthest away from the master cylinder first, typically driver's side rear. Then bleed the others, ending with the one that's closest to the master cylinder. Generally, right rear, left rear, right front, left front.

Adjust the rear brakes until you hear them rub a bit as you turn the wheel, then back off a couple of notches. Be sure to use the brakes when backing up at first, let them adjust themselves up to where they should be.


Jan 09, 2011 | 1998 Chevrolet Malibu

4 Answers

Brake pedal is mushy all the way to the floor. Have already replaced front calipers, master cylinder, and bled all the brakes. Pedal still goes all the way to the floor when stopping the car.

If the car has drum brakes in the rear, Jack the rear up and have someone push the brake pedal hard and you try to turn the wheel. If you can turn it you need to adjust the rear shoes. They may be traveling out so far that the fluid level drops causing the pedal to go to the floor. You must adjust them with the drum on till you hear and feel the shoes rubbing against the drum. Hope this helps.

Dec 30, 2010 | Honda Accord Cars & Trucks

1 Answer

Need to know how to get the air out of the brake lines.

You will need to bleed the brakes. The easiest way to do this is to have a second person if you don't have a power bleeder.
You should have the vehicle on a level surface, then starting at the farthest wheel from the master cylinder (right rear) have your helper pump the brakes several times until the pedal is firm. Then have your helper keep constant pressure on the brake pedal while you loosen the bleeder (a small nut with a hole in it located towards the top of the brake backing plate on the rear). If this vehicle has 4 wheel disc brakes the bleeder will be located at the top or highest portion of the caliper. You should check that you have a full master cylinder of Dot 3 brake fluid and make sure the cap is on securely after you have bled each wheel. Running the master cylinder out of fluid will only cause you to have more bleeding.Only crack the bleeder open far enough till you see, feel or hear air come out but make sure to tighten it before you helper reports the pedal is on the floor.
You will need to be quick. Repeat this on this wheel till you get a solid stream of brake fluid coming out. Then move to the left rear and repeat.
Once done on the rear you will need to remove the tires from the front to have access to the bleeders on the caliper.Again starting on the left front repeat the procedure then move to the right front.
By the time you are finished your pedal should be firm and towards the top. If its not you may need to replace the brake pads and shoes and have the rotors turn or replaced. If you have rear drum brakes you should make sure these are properly adjusted up also. This too can cause a spongy pedal.

Aug 07, 2010 | 2002 Chevrolet Tracker

1 Answer

On my 1990 ford f150 i have to press the brake pedal down real far to get my break light to come on it seem to work fine when truck is not running only when i start the truck up

Above the brake pedal arm is a small switch with a rod sticking out toward the brake arm. This is the switch that controlls the brake light. You can loosen the nut and turn the unit to adjust it. It won't take much adjustment to change the action of the switch. It should be so when the brake pedal is depressed 1/2 inch the brake lights are activated.

Feb 23, 2010 | 1990 Ford F150

1 Answer

Nissan sentra

It does not sound like air in the system or the pedal would pump up. I would tend to lean towards the brakes may need an adjustment and also the an adjustment to the rod at the master cylinder. You were very observant in noticing a change as that. You are correct in that the pedal should not travel so far as to be near the floor, this can cause an unsafe condition. Have this problem attended to soon to be safe.

Oct 19, 2009 | 2004 Nissan Sentra

2 Answers

Brake pedal goes down to far abs brakes

Hi I'm litoshop if you bled the system and get no results then your brake pump needs to be replaced now before replacing make sure your pads are installed correctly because if there not this to can cause this problem good luck. if this information has been useful please let us know thank you.

Aug 11, 2009 | 1998 GMC Sierra

1 Answer

1999 Dodge Ram 1500 conversion van rear brake hammering

Are the brake shoes on right, there are two size shoes, One shoe has a longer brake lining then the other. The short brake lining is towards the front of the van and the longer brake lining is towards the rear. The rear brakes also may need to be adjusted, you can do that by going in revers in a empty parking lot and push the brakes as hard as you can to stop the van. Don't give your self a whip lash, just push down gradually and as far to the floor you can about 7 to 10 times. The self adjusters should adjust the brake on both sides, try this first before you take the brakes apart again. It may just need a adjustment and after that check the brake fluid in the master cylinder. Good luck and hope this helps. Keep me posted, be glad to help

Jun 20, 2009 | 1999 Dodge Ram

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