Cars & Trucks Logo

Related Topics:

A
Anonymous Posted on Aug 02, 2012

Bleeding the brakes for a 1990 GMC Sierra Truck

How do i correctly bleed the brakes the truck has Rear ABS

5 Related Answers

Anonymous

  • 99 Answers
  • Posted on Dec 17, 2008

SOURCE: 1998 chevy C-1500 brake problems

Try a clean and adjust on the rear shoes, because sometimes when they aren't properly adjusted they won't seem to work properly. Also there is a common "squishy" petal feeling after brake work on most all larger GM's around that year, wich I have run into several times. Try test driving it, and put a couple miles on it, That usualy helps.
Good luck!

Ad

Anonymous

  • 3 Answers
  • Posted on Apr 06, 2009

SOURCE: How do you bleed brakes on a 1999 GMC Sierra with

The rule of thumb is to start as far away from the master cylinder as poss. so it means you start at the right rear, left rear, right front, then at last left front. There is a little a little weep bolt on each calliper it needs to be un lossened when break is fully applyed then tighten weep bolt back up pump the breaks while weep bolt is still tight then hold brake pedal down to floor lossen weep bolt till a full steam of fluid comes out tighten bolt back up, now move on to the next break calliper and repeat this same proccess till you finished. Hope this works better than r/r l/r r/f l/f lol!!!!

jdthefixer

  • 747 Answers
  • Posted on Mar 15, 2009

SOURCE: Bleeding Brakes on a 2001 Silverado Z71

Tony,

When bleeding brakes after the system has been opened for service (you didn't say if you were doing any work on the master cylinder) you should start with the farthest wheel away from the master cylinder, which is the righ rear. Fill the master cylinder, then have an assitant "pump up" the brake pedal. Tell them to hold it down firmly, then open the bleeder on the wheel cylinder(s). Do not release the brake pedal until you have closed the bleeder valve again. You'll know when the air is out - there won't be any more bubbles. Since this vehicle is 2001, this would be a great opportunity to flush the system. Just make sure you have enough brake fluid (DOT 3 or 4, depending on your vehicle). Good luck!

Anonymous

  • 1392 Answers
  • Posted on Jun 10, 2009

SOURCE: BLEEDING REAR BRAKES CAN BLEED ONCE THEN SECOND

Sounds like a problem with the proportioning valve. Try not to push the pedal down to far when bleeding. The valve sounds like it is getting stuck closed, and takes a little bit to release and allow fluid to pass again.

jatncbeach

  • 225 Answers
  • Posted on Aug 13, 2009

SOURCE: brake bleeding

if you didn't bleed the lines after putting the master in. then there is a good chance there is air in the lines now. may go through a quart of brake fluid before all the air is out. remember to start at r-rear/ l-rear/ r-front/ l-front last.will take some time. don't forget to adjust the rear brake while your there to help with the pedal

Testimonial: "thank you"

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
1answer

Abs hydraulic unit chevy truck

some vehicle made by GM require special sequence bleeding and a scan tool to open the abs brake module to bleed all the air
0helpful
1answer

I have just replaced all my break lines and now i am trying to bleed them and i am doing the pumps on the break then letting the air bubbles out but it seems to be not working, just wondering if there is...

You may need to take it to a shop which has special equipment to bleed electronic ABS systems, Not sure about this for your truck. You are doing it correctly for older brake systems. My 2004 Ranger requires special equipment.
1helpful
1answer

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
0helpful
2answers

Hello sir.. i am bleeding the brakes in my 99 gmc sierra, i have replaced all the brake lines minus the two lines in the rear that route to a t, now from past this all the lines are new, everythings tight,...

U need a special tool that holds the poppet valves open in the ABS hydraulic control unit to bleed the brakes of air, without it u CAN'T get the air out of the system.
1helpful
1answer

Drivers side rear brake locks up on severe braking, then releases and I have no brakes

If you are dealing with ABS brakes you probably have a bad wheel cylinder on that wheel and air in the line. Replace the wheel cylinder and bleed the system.
1helpful
1answer

I have a 2001 gmc sonoma 4.3 replace brake lines on back i am not getting any fluid to rear wheels i tryed bleeding sys with help diconected abs sys to reset to defalt no abs light is on stumped

a special tool is required to hold the ABS hydraulic control unit popit valves open during bleeding of the brakes, without this special tool you will not be able to get the air out of the system, most good brake shops have this tool or of course the local Chevy dealer or GMC dealer. I am a dealer tech and know this information is correct..
2helpful
1answer

1997 GMC Sierra 5.7 changed master cylinder calipers and brake pads. I have a hard pedal until I turn the truck on and the pedal goes to the floor? Is there something I am missing? I have bled the brakes...

check under your master cylinder,is there another clyinder below with one line in and one line out,if you do I found this is for the Abs to the rear,I had to replace this it was full of air,and did exactly what yours is now
0helpful
1answer

How do you bleed the abs unit on a 1997 chevrolet truck

start by bleeding the master cylinder bleed the line closest to the fire wall, then proceed to the right rear wheel, left rear wheel, right front wheel, and then the left front wheel.
1helpful
1answer

2003 GMC Sierra Brake PROBLEMS!

Try vacum bleeding with a vacum pump from any parts store. You definitely have air somewhere and vacum bleeding usually works and you can do it by yourself.
0helpful
1answer

No break pedal after brake job on 1990 Toyota P/U SR5 V6 rear ABS

Are you getting fluid to all 4 wheels when you try bleeding it?
Not finding what you are looking for?

1,390 views

Ask a Question

Usually answered in minutes!

Top GMC Experts

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

john h

Level 3 Expert

29494 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

15088 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...