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  1. Brakes
    Hello guys, I have a 2003 gmc envoy xl with 169k miles and within the last week I noticed when I go out in the morning (or whenever it’s the first time driving of the day) and for the first 10ish minutes of driving my brake pedal feels super spongy and you push the pedal further then normal to...
  2. Brakes
    Greetings, I recently was doing some work on my 2003 Envoy and nicked a brake line. The brake line affected was the rear driver side on the line that runs between both calipers in the rear. After trying to replace this line, I realized that the brake hose junction boxes are rusted tight...
  3. Brakes
    Both rear calipers and hoses were replaced due to leaks in the rear calipers. Also tried a new brake booster. Bled the brakes, no new leaks, and they still don't work. The pedal is squishy until the last 3ish inches, where they sometimes decide to work. Is this a problem with internals as...
  4. The 02-09 "How-To" and DIY Section
    Daughters 2005 TB had a soft brake pedal. Upon inspection brakes sucked. New pads, calipers, all around. No dice. Petal to the floor. When off can get booster to tighten them up. But when running pedal to the floor. Ahh.... Must need bled. Bled brakes, same issue, ahh... Must need A New master...
  5. OEM Issues
    I red though the old posts on bleeding brakes but they did not help. I am looking for input please. My daughter showed up with a missing brake disk??? All the other disks had life?? Not sure what happened, I replace front rotors, pads, and calipers, replaced back pads and rotors, replaced...
  6. Off-Road
    Hello everybody, over the past year I have been building my 2007 Trailblazer for the sole purpose of being a beast on the trail, throughout this post I will be discussing everything that I have found to work and everything that doesn't work for the truck. I have tried to keep everything as...
  7. 02-09 Vortec 4.2L I-6 Engine and Drivetrain
    Can I change my brake fluid by using a turkey baster, empty master cylinder and refill then do the same a month later?
  8. Brakes
    Hello everyone; Need help please:( Tbz 2003 ext 2wd My home village is on top of the mountain, I visit every weekend, when leaving I have like 70km of descending, every single time I face the same problem: The brakes become hot and the pedal becomes loose and I have to stop to let them cool for...
  9. Brakes
    02 Trailblazer LT EXT After replacing the front right Rotor & Hub Assembly, along with pads on both sides my pedal had no pressure so I decided to bleed the system and change the rear pads while I was at it. While bleeding I ran into a stripped bleeder valve on my final wheel so I resorted to...
  10. 02-09 Brakes, Suspension, Wheels and Tires
    Anyone have the same problem? After replacement of all calipers, master cylinder, brake booster and bled multiple times using gravity method, bottle method: What’s been done to this 2002 Trailblazer Flushed out all old brake fluid Replaced all calipers, hoses and rotors Bottle bled and vacuum...
  11. 02-09 Vortec 4.2L I-6 Engine and Drivetrain
    2002 chevy trail blazer, The left and right tail lights do not work when I press on the pedal. The third brake light works properly, and the left and right brake lights illuminate when the hazards are on. The running lights work and so does the reverse lights. I’ve looked through the forums and...
  12. General
    I think I posted the first in the wrong place and I wasn't sure how to delete it. The brake booster failed in my 08 chevy trailblazer 6cyl 4wd. I was going to get an oem one from the dealership but they said it was discontinued so I had to get a crap remanufactured one from o'reilly's. It works...
  13. Brakes
    '05 Isuzu Ascender: I was stopped on a steep hill waiting on traffic, facing uphill. I had eased off the brakes and rolled backwards a little bit. When I pressed on the brakes to stop again, there was a dull popping sound from under the hood in front of me, a noticable pulse in the brake pedal...
  14. Brakes
    Hello all! Last winter up in Michigan right after we had the polar vortex hit us dropping the temperatures down to -40 I started to have problem with me abs sensors. At the time I blew it off because it was winter and theirs ice and snow everywhere so I thought the abs was just working the way...
  15. General
    Searched a bunch but didn't see this specific issue in the forum. I'm having an intermittent issue where my brake pedal sinks about an inch or so when I've just about come to a complete stop, right when the transmission kicks down to first gear, my pedal sort of "creaks" down a couple inches and...
  16. General
    So I have been noticing some rough brake performance at times, and an on again off again P0171 MIL on my 06 TB. It runs perfectly fine sometimes, but others it does. There's a small high pitched noise under the hood, not sure from where though. The brake booster isn't making any noise though as...
  17. Brakes
    I've been doing some research, and I believe I have the problem figured out but I would like some input to verify the conclusions I've come to. I've been hearing a vacuum leak for the past few weeks, I believe the brake booster is the problem, specifically not holding vacuum. I can hear a...
  18. Brakes
    okay -- follow me, current problem each front brake caliper 'grabs' through the day, not both at the same time , left / right take turns, it is 'fine' when cold starts grabbing through the day, the pedal is normal then feels too high when pads are 'dragging' - i have replaced one caliper...
  19. OEM Issues
    Hello all I am having an issue with my TB It is an 07 LT with the I6 and 4WD, it has about 150k on it. The ABS or TCS on the car is overly sensitive and prevents the car from stopping on many occasions. Its very dangerous as the TB will roll really far with the ABS going crazy when any other...
  20. OEM Issues
    Hello all: In the process of trying to replace my ECBM. The Kelsey Hayes (KH) is what my TB has installed. This unit is not re-build able. I have been shopping online and parts warehouses keep sending me the KH 325 unit when I order. Does anyone have a good source for replacements of the...
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