Q: Q: Brake issues

asked by on

Hello, I recently changed all of the following on my 2003 Silverado 1500, master cylinder, vacuum brake booster, vacuum hose from booster to the back of the block, brake pads and rotors, calipers, and brake hoses from the caliper to the metal line, bled almost 2 gallons of brake fluid through the system to get out all the air from the lines, I watched video on YouTube about purging abs pump but my scanner isn't able to perform the purge, when I apply the brakes quickly my truck doesn't stop on a dime like it use to, if I pump the brake peddle 3-4 times it gets hard and I'm able to stop, please help I don't know what else to do and can't afford to take it to the dealer or mechanic shop. Thanks for your time

My car has 127952 miles.
My car has an automatic transmission.

With the engine off, pump brakes several times to deplete the brake booster assist. If you disconnect the front brake line at the master cylinder and have assistant push brake pedal down slow until it’s to the floor. Keep your foot on the floor until fluid coming out has no air, then reinstall and tighten the line and then let off the brakes. Do the same steps for rear line on master cylinder then bleed brakes using clear hose and bottle with fluid in it starting with right rear and then left rear, right front, and left front. Then see if brakes are firm.

If rear brake shoes are adjusted up and you still have a low pedal, then you may need to have the system pressure bled using a pressure bleeder. To have this issue inspected, a certified technician, such as one from YourMechanic, can come to your home or office to inspect your brake system and let you know what needs adjustment or repair.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Brake issues

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Loud clanking noise between front belt and fan. Fan appears loose 2003 Mercedes ML350

Hello - while it is possible that there are simply loose nuts/bolts for the fan, it is most likely the fan clutch is failing, hence the wobbling fan. I recommend a fan clutch replacement as soon as possible, performed by...

Q: Tapping problem

Hello there, as the vehicle ages and goes up in mileage it is not uncommon to hear a tapping noise such as this. Many different things can cause this noise but in all cases the noise is not normal. The...

Q: Rear brake light, and some interior lights don't come on unless I'm braking

Hello. Replacing the stop light socket with a new one should have solved the intermittent problem of the stop light not working all of the time. It is possible that when you tweaked the socket, it caused a short to...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...