Question about 1999 GMC Jimmy

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Anti-lock and red brake light are on after left rear steel line was leaking. Has been repaired and bled but rears don't seem to be working as well as lights are illuminated

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When you bleed the system there is a porportioning valve that has to be re-set or replaced.

Posted on Aug 05, 2010

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Posted on Jan 02, 2017

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2001 Silverado 2500 HD Why Rear brakes don't work after I installed new hydro-boost power booster, master cylinder, calipers, and pads. I bled master cylinder before installing, and brakes beginn


Hello Patricia,

Have you checked the master brake cylinder reservoir for brake fluid loss?

I don't suspect the master cylinder as you have replaced it... but am more suspect of a leaking brake line or fitting which should have
been discovered when you had the system bled.

The only time I ever had a rear brake problem with a 2500 series Chevrolet was due to seized rear brake caliper guide pins...as your calipers are also new that is not your problem.

If your brake pedal feels spongy and travels to the floor board you have air in the system, a brake fluid leak or a failure in the power steering system, such as a broken hose, broken power steering pump drive belt, or failed pump, would result in a loss of pressure to both the hydro-boost and steering.

Find more information here:

. Hydro Boost Power Assist Systems Operation Diagnosis and Repair

Jul 23, 2017 | 2001 Chevrolet Silverado 2500HD

1 Answer

Brake fluid leaking from a pin hole from the rear steel brake line


The brake line needs to be replaced or repaired.

Sep 28, 2012 | Cars & Trucks

1 Answer

I have a 95 Villager with Anti Lock Brakes. I replaced the Pads, Calipers, Shoes and Front Brake lines. I bled the brakes according to the repair manual but, the brake light is on and the pedal still goes...


The brake bleed may not have been successful. Always bleed the right rear brake first then the left. Next the front right and then the left. If you are using someone to work the brake pedal make sure they hold it down until you have closed the bleed nipple. Make sure you use a little hose on the nipple and into a jar with fluid in it to watch for the bubbles to stop. Make sure the master cylinder always has enough fluid in it.
There is a brake bleeding kit that can be bought, this makes the job a lot easier.

Oct 07, 2011 | 1995 Mercury Villager

1 Answer

1999 Ford E350 van problem: brake pedal is soft; have replaced master cylinder, rear wheel cylinders, rear brake shoes and drums, front calipers, rotors and discs; have bled master cylinder before...


Good question, on the antilock system is a bleader too and bleade it the same way you bleade the caliper. After all is done adjust the rear brakes, they should have a drag to them.

Feb 23, 2011 | 2007 Ford E-350 Super Duty Length XLT

1 Answer

I had a rusted brake line to the left rear wheel and i replaced the section of line and bled the rear brakes. petal goes to the floor. front brakes lock up and rears are inop. found rear wheel cylinders...


First do you have ABS next did you bench bleed the new master cylinder if not you can;t bleed the rest of the system You have to keep in mind that you have opened the entire system up and there is going to be a lot of air traped in it Getting back to the master cylinder it needs to be bleed pirior to installing it you need a little kit put the fittings into the holes where the lines go put the little hoses in to the resivoior put the cylinder in a vice and push on the pistion from the back until no more comes out of corse you need to fill it first then install it and rebleed the lines starting at the ferthise cylinder away from the master and work to the closest and its going to talk at least 10 to 15 pumps for the rears less for the front becase there closer and there is less line to bleed Make sure you have no leaks first if you see anything at all stop and fix the leak Hopefuly don;t have abs thats a whole differant thing but the brake still work fine with out it get them working and worry about that later good luck

Nov 21, 2010 | 1995 Chevrolet Lumina

1 Answer

I have a 2000 chevy blazer. had to short fix left rear brake line with hose and clamps. bled air from that side, brakes were soft in the pedal. checked right rear for any air had none. brakes still feel...


do not drive the vehicle. remove the hoze. replace it with steel line. rubber hoses are not meant for the high pressures of brake lines. it is expanding when you press the brake pedal. very unsafe.

Mar 23, 2010 | 2000 Chevrolet Blazer

2 Answers

I have re/re the rear brake cylinders,shoes,drums,front rotors,pads,and callipers on my 2000 gmc safari van.i have bled all the brakes. but the drivers front has no pressure or fluid.the other three brakes...


make sure you are bleeding them by doing them as an abs system,do the right rear then the left front,then the left rear then the right front,the opposite wheels are how the system brakes.

Jan 21, 2010 | 2000 GMC Safari

1 Answer

Brake light nad rear anti lock light wont go off


Check the fluid level, top it off if needed, look for a fill to line on the side of the reservoir. Check rear brake shoes/pads, are they too worn? Replace with new ones. Bleed all 4 wheels, starting with the farthest one, then go to next farthest, and so on. Look for leaks inside the rear wheels. Adjust rear brakes (if shoes not pads).

Jul 09, 2009 | 1988 Ford Bronco II

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