Pedal to the floor... BRAKE pedal!

It seems that my H3's brake pedal slowly goes to the floor as I depress it as if the brake line is leaking somewhere...
 
example 1: stopped on an incline, trans in Neutral, foot on the brake. slowly the brake pedal goes to the floor and the car rolls back. so I put on the e-brake. no biggie... maybe
 
example 2: stopping down a hill.... this is dangerous, the pedal slowly goes the floor and the car just keeps rolling.
 
example 3: 200-300 ft (roughly) normal stop from 25-30 mph by depressing on the brake pedal with normal constant pressure. The pedal again goes to the floor (slowly)
 
Brake fluid level is OK
 
Any suggestions or advice?
 
I think I shouldn't brave it and drive to the dealer right?
 
This is a frustrating end to a long day...

if it's still under warranty (and it likely is, as an 07), i'd take it in.  i definitely would NOT drive it around like that.  personally, however, i would drive it to *my* dealer - but that b/c he's literally 2 blocks away.  if i were you, i'd get it towed.

Wow, uh, I'd be calling for a tow right away. You don't want to be a 5000 lb missile in traffic.

I'm not a brake expert by any means, and I'm sure some will come along, but obviously you are losing pressure somewhere. Maybe it's not enough to show a drop in brake fluid yet. Or maybe there's air in the line, or contaminated fluid.

You made it to the end of the day without getting hurt. That counts for a lot. Tomorrow, the dealer gives you a loaner and fixes it up. That'll be a good day.

Sounds like a bad master cylinder, but with all the motors/servos/ and modules attached to it I'm not sure if there's other places the fluid could bypass so I dont know what they'll replace. Keep us informed.

Lots of possibilities; diaprahm in the master cylinder, air or moisture in the line, etc. My guess is the master cylinder. Pretty soon you should notice a drop in your brake fluid level. If you pump the pedal you should get some more stopping power but that is a short term solution. Get your truck in asap.

thanks guys - that's what I've been doing when I needed extra stopping power - pumped the brake pedal.
 
gotta call the dealer tomorrow - definitely don't want to be a 5000 lb missile in traffic...
 
ill keep u guys informed.

Good luck, check your brake fluid and be safe.

If you have to you can shift from Drive down to slow you down, we had the brakes go out on a cherokee once and drove through the city of Lincoln with no brakes

quote:

ORIGINAL: Forney

If you have to you can shift from Drive down to slow you down, we had the brakes go out on a cherokee once and drove through the city of Lincoln with no brakes

 
yup ive had to do that a few times just to be safe...
 

 
bringing the car in tomorrow, hopefully the loaner will have working brakes

guess what - the brakes fixed themselves on the day I brought it in. The dealer agreed to keep looking however and I'm "stuck" with an 08 Chevy Silverado LT 4x4 Crew Cab.. pretty sweet truck
 
 

good luck. That's a scary intermittent problem.

That is usually not an intermittent problem.

Ive had issues with mine before too...its the hydro-electric or electro-hydraulic....one is a really big dam and the other is a braking system.
To me, its kinda scary.  It has to pressureize before it works.  If you turn your ignition to On for a while, you'll probably hear it working every so often.  It sounds like a air pump to a fish tank.  Some mornings when I roll out of the driveway too quick after starting the engine, I push the brakes and nothing happens.  Have to hit em twice.
In your case, the pump might have had an air bubble in it so it wasnt primed or maybe it just wasnt working.  Could have been a loose wire but you would have seen an ABS light most likely.
 
But I'm reminded of something a coach told me once.  'Speed is your friend...when in doubt...GAS IT! Get as far away from the problem as possible.'

conclusion: no problem...
 
who knows what happened that whole week but it is perfectly fine now... oh well.
 
i guess I got to test drive a Chevy Silverado for an extended period of time...

I would rather have the problem and know it than think I don't and have it occur. Hope it doesn't return.