How to fix the soft pedal issue with the rear anti-lock brakes on a 1988-1998 Chevy K1500 Silverado

In this video I will show you How to fix the soft pedal issue with the rear anti-lock brakes on a 1988-1998 Chevy K1500 Silverado. This
will give you back a nice hard pedal BUT I am NOT telling you to do this, only showing you what I did. The link to where I bought the
product is below at Amazon.
Master Cylinder Fitting Adapter ▶ amzn.to/2BwgkT5
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[@mikesal8088]

Best video on this subject, a common problem with rear ABS these year trucks. Plan on doing this on my 1992 Sierra K1500 when the weather improves.

[@outalive55]

thanks Man, I have been trying to get a "good Pedal" on my '89 k1500 and have replaced every component in the system. I'm doing this in the morning .

[@wildchildomega]

Thank You for the video, it was direct and informative and you did not drone on and on like some videos. 🙏🏻

[@SmokeyA55]

Excellent video going to do my 94 this weekend THANKS

[@joseOrtiz-jx5eh]

Wow, work like a charm, Now I can tailgate people on the freeway.lol thanks for the video.

[@user-kv3kh4pp3e]

Me asf

[@boxxdrmtb]

Was really hoping to learn the correct procedure to bleed the ABS and retain it I thought it was pretty damn obvious how to bypass it didn't need a video for that but I appreciate you telling me about the adapter

[@dougsmith4879]

I did the ABS delete and a master cylinder of a 2003 Suburban and it made a huge difference!!!

[@insertnamehere313]

How did you do it please tell me I'm in a pinch and I ABSOLUTELY HAVE TO FIGURE SOMETHING OUT I CAN'T AFFORD A MECHANIC

[@dougsmith4879]

@@insertnamehere313 get a 2003 or so Suburban master cylinder. There are detailed videos on the ABS delete and the new master cylinder. There are two easy fittings to buy. It's easy if you are a pretty good mechanics. You have to bleed the new master cylinder and brakes of course.

[@kCI251]

What year was the truck your put the 03 Suburban master cylinder on?

[@frederickmaher2513]

nice my boys truck hasn't had a good pedal for years im doin the rear lines now and cant gravity bleed at the rears, by by dump valve,i bet i can gravity bleed with it gone, much thanks for post as i am an old mopar guy.

[@highseasmarinediaz493]

Man! I asked the guys at NAPA and O'Reilly's about, just if you could bypass the ABS pump and not one of them would give me a straight answer! My brake module is burned up anyway. Thanks for being detailed about the fittings! That helps alot and yes,! I do know the repercussions of doing this and I take full responsibility. Thanks again!

[@catdakman1273]

Asking parts store guy........ is like asking a cop, How to get away with running red lights. P.S. No commercial repair shop will work on your truck if you dis-able the ABS.

[@Nilocsemliw]

I’m trying this right now! This hopefully will fix my braking issue

[@chatoggtm1678]

Did it fix?

[@Nilocsemliw]

@@chatoggtm1678 yeah it did. I just removed the anti-lock brake system and went directly to the master cylinder

[@johndenelsbeck8075]

Thanks for the video. Did this to mine due to spongy breaks and sink to floor. Works perfect now

[@adamupton8723]

I know my comment isn't about this video but I'd love to see a review of Dinowax wash and wax.

[@crypttonite]

arrangement on sub v2500 has abs solenoid between proportioning valve & booster

[@SmokeyA55]

Did ABS delete today brakes work excellent now better than new

[@robgreene1785]

LMAO nice camera work... for real though thanks for your video

[@ericperry4934]

do you know the port sizes for the master cylinder also? do you know the 3 other ports thread and tube sizes of the prop valve? I'm forming new lines from straight lines.

[@JesusHernandez-ou2ug]

Where you got that part to change brake hose

[@dougsmith4879]

I will do the same on mine!!

[@lawnworkshawaii2418]

Thank you.

[@mikesal8088]

Huge improvement. I purchased the fitting, but ended up not needing it.

[@jamescole3152]

I have the 4 wheel ABS. And there is no proportioning valve. So not sure if need one. But I want to be able to lock up all 4 tires. Tired of brake pedal that goes to the floor, and now just weak brakes.

[@davidrowland2354]

Did you have to reset the proportion valve

[@niveknospmoht8743]

Converted my 91 suburban to larger brakes (why GM made these in 1/2 ton with passenger size brakes is beyond me) and had a soft pedal afterwards. Mine looks way different than what you show here. Mine is pancaked behind the prop valve and looks like another prop valve. This answers a quite a few questions, but......anything done with the wiring? or just zip tie it out of the way

[@superdragon9293]

Been going through this same problem for three months now.......hope i can find that adapter fitting with no problem bout get on the job rite now thankyou brother post more videos plz..... p.s....Love my 88 Silverado

[@SPANKS54CONTRERAS]

I know this video was made a year ago but I'm having problems with my brakes where did you get the adapter from

[@abnerjr.famoso1395]

I got the same adapter from O'Reilly Auto Parts.

[@guero7924]

@@abnerjr.famoso1395 what is it called

[@rmmm6725]

There is a link in the description for the adapter. It’s on Amazon

[@oddball0022]

Wow, my first Gen Cummins is nowhere near that easy to work on, the prop valve is inside the frame rail, the abs valve is at the back of the truck, and the brake line going to the abs valve is in the frame rail almost unaccessible due to the diesel tank.

[@tpep1693]

Good camera footage, and I have to say, I work on my on cars, "shade tree mechanic" if you will, and been doing it for years, so I know a bit about the basics, and get a lot of intel on these video's, but I have to say that some of the things you guy point out, and I get it, seem's kind of silly to a guy that has some knowledge about these things, because some of the "Things" you point out, if an individual who want's to work on their on vehicle does not know these "Things" my suggestion would be DO NOT WORK ON YOUR VEHICLE! Thank you

[@vancepass7403]

Badass☆☆☆☆☆

[@lisaheberle1208]

Where do we find that special fitting??? I thought it was the brake booster $120 later I was bummed until I found this video

[@dougsmith4879]

Any parts store should have it. Edleman part number 258450

[@catdakman1273]

The Booster gives you Power brakes over hard to push manual brakes.

[@stevenrath4662]

So is the fitting into the dump valve 9/16 or 7/16 ? You seem to have changed your info in the video but your link is still 7/16-24?

[@texaswildcat2000]

I think he was meaning both use a 9/16 wrench to remove and install... one being a 1/2-20 thread and the other a 7/16-24 thread, but same size wrench to remove both...

[@dennispendley5232]

I bought the adaptor. It will fit into proportional block but the brake line won't fit into the adaptor. The brake line will not screw into adaptor. Now I'm stuck. 1994 Chevy Silverado. Any suggestions?

[@texaswildcat2000]

@@dennispendley5232 possibly wrong adaptor... take your abs modulating valve, one you remove it, with you to the parts store, and the adaptor... between the two you have both thread sizes you need for a correct adapter... the modulating valve will show you line thread size and adapter shows you the thread size into the proportioning valve... use both of those at the parts store to get an adapter that will work...

[@dbs6896]

@@dennispendley5232 hey Dennis, I have a 94 silverado also....what was the fitting size you got. I am having the same problem. Was the change in braking impressive or was it just ok?

[@martingarza3383]

Is that brass made for high pressure? I work with high pressure and there are gauges that use brass so I know there is high grade brass out there.

[@dougsmith4879]

It will work on the braking system.

[@martingarza3383]

@@dougsmith4879 I'm leary of constant use. If I knew working pressure and burst pressure than I could deduct if I'd work with it.

[@dougsmith4879]

@@martingarza3383 these adapters are made for that. The braje pressure isn't hundreds of PSI.

[@dougsmith4879]

@@martingarza3383 the adapter is basically the same thing as the fitting used on the brake line. I worked on cars most of life and over 20 years working at auto parts stores.

[@dougsmith4879]

@@martingarza3383 the brass fitting is much thicker than the lines so it's solid.

[@cs652806]

Could this fix an issue where the rear brakes aren't working at all? Noticed in snowy conditions that the fronts lock up but the rears don't do anything. Went through all the usual brake trouble shooting. Changed a leaking wheel cylinder, Bled brakes, topped off fluid etc.

[@dougsmith4879]

Mine has no pressure at the rear and I think it's the dump valve. I'm putting on the 2002 Chevy 1500 master cylinder and ABS delete next week.

[@nickschmidt7181]

Is your brake light on? If so it sounds like your proportioning valve needs reset.

[@dougsmith4879]

@@nickschmidt7181 I am going to bed rid of the rear ABS (rear only on this year) because it's problematic.

[@ReaganCooper]

@@dougsmith4879 How did it go w/ the rear ABS delete? Any issues w/ the NBS master cylinder?

[@dougsmith4879]

@@ReaganCooper no it was pretty easy and much better brakes! Thanks

[@818nut]

Disconnected the connectors on the computer but still have break light on dash. Any ideas would be helpful. Thanks

[@luisrubi7633]

did you check the e brake sensor ?

[@818nut]

luis rubi No but I’ll check it out..thanks✌🏼

[@luisrubi7633]

@@818nut if you press down on the e brake and the brake light gets brighter then you are good with that. if it doesn't then replace the switch

[@818nut]

luis rubi got it...appreciate your help

[@catdakman1273]

stick a small sticker or something over the light area.

[@gchrysanthis4734]

i did the same thing, and my brake light is still on,,,

[@neilmackenzie8345]

Is that dump valve computer programmed by Boeing ? The computer goes , the truck crash's ?

[@jeyweb4236]

Two years later...Did it really fix the problem?

[@dougsmith4879]

I did it on mine and it really helped!

[@dbs6896]

@@dougsmith4879 did you just do the bypass or did you also change out the master cylinder with the NBS style?

[@dougsmith4879]

@@dbs6896 I did the bypass and the newer master cylinder at the same time.

[@donniestottlemyer2785]

Correction it is a combination valve

[@patredoski5809]

Why not just replace the dump valve and get the antilock benefits?

[@catdakman1273]

Check the price, and find one, if u can

[@catdakman1273]

The same is a 1991 silverado...... no fitting used.

[@thechitz4355]

He's right don't listen to him and do that. Fast easy way is take the ABS fuse out

[@greeber18]

This is a waste of time I've driven a 93 for years and any soft pedal issue is usually solved by adjusting the rear brake shoes. If there is a concern about the ABS system, just take the truck to a wet street or gravel road and brake hard to lock up the rear wheels. The abs pump will activate (which can be felt in the pedal) and will help unstick any parts in the ABS system. The oly time to make a mechanical system change is if there is an actual mechanical issue and there are NO parts available.

[@3613jeremy]

Everyone be careful when removing and reinstalling old brake lines it'll strip those aluminum threads I suggest cleaning and lubricating before you gently start threading them in to the portioning valve