Question about 2003 Pontiac Grand Am
Sounds like you have air in the system. Bleeding the brakes isn't difficult, but it is most easily done with a helper to "pump" the brakes from inside the car.
Start out by making sure the master cylinder is full of fluid. Do not run the engine.
Go to the right rear wheel first (it is the furthest from the master cylinder) and find the wheel cylinder bleeder screw. It'll be at the top of the brake backing plate and may have a small rubber dust protective boot over the tip. Remove the boot, find a wrench to fit the hex shoulder of the screw and break loose the thread (turning counterclockwise). Once you've cracked it loose, just slightly snug it back down and have your helper pump the brakes several times until they feel pressure building up. At this point, the helper must hold the pedal down (DO NOT RELEASE PRESSURE) while you crack open the bleeder screw. Any trapped air should spurt out. When you do this the brake pedal will go all the way the floor. Be sure your help understands to not release their foot pressure until you've re-snugged the bleeder screw and tell them "release". Check the fluid level in the master cylinder and fill if necessary.
Repeat this procedure on the right rear wheel until the bleeding action produces nothing but fluid (no air bubbles). Hopefully 3 or 4 times will be sufficient. Upon completion of this step, refill the master cylinder.
Next go to the left rear wheel and follow the same procedures.
Next go to the right front wheel and follow the same procedures.
Finally go to the left front wheel and follow the same procedures.
At this time the brake bleeding should be complete and you should feel an improvement in the feel of the pedal.
If you want to bleed any further, just follow the same sequence as outlined above.
Key an eye on the brake fluid level....if it starts going down, add before it becomes low enough to allow air back into the system. If the level starts going down shortly after bleeding, you probably have a leak some where in the system.
I'll not go into detail on how to check for leaks. If it becomes necessary, just do another post to FixYa.
Posted on Jan 03, 2011
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Posted on Jan 02, 2017
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