What size socket do I use to remove the brake caliper on a 2004 grand prix?

Open the bleeder screw to relieve the pressure and then press the piston in. Then close the screw and intall the pads. Dont forget to top off your brake fluid reservoir when your done.

Hi. Please see procedure below:

Remove the old Brake Pads

1 Park your car on a level surface. If you have a stick shift car make sure the car is in gear. Place blocks in front of the front tires so the car does not move while you are working on it.

2 Open the hood of your car and locate the master cylinder. If necessary, remove brake fluid until the level in the container is less than half full. A turkey baster is a good tool for this. Put the brake fluid in the plastic container and dispose of it the way you dispose of motor oil.

3 Raise the rear end of your car with your car jack. Remove the rear tire or wheel assembly.

4 Remove the parking brake cable from the back of the caliper. Use the pliers to remove the cable clip (restraining clip). This step is done only for Grand Prix RPO Z7Us.

5 Hand-tighten two lug nuts to the studs to hold the disc rotor in place while you work on the caliper. Remove the bolt and washer holding the cable support bracket to the caliper. The cable support has the parking brake cable and brake hose attached to it. This step is not done for Grand Prix RPO Z7Us.

6 Use the socket wrench to remove the caliper guide pin bolts. Slide the caliper off of the disc rotor and hang it in the wheel well with a small bungee cord or wire hanger; Don't let the caliper hang from the brake hose.

7 Remove the brake pads and shims from the caliper. Throw away the shims.

Install the new Brake Pads

1 Use the spanner tool to rotate the piston clockwise all the way into the caliper. Make sure the notches on the piston are at the 6 and 12 o'clock positions. There is a boot (rubber seal) around the piston bore. Lift the seal's inner edge and press out any trapped air. Insert the brake pad clips into the caliper support.

2 Apply a thin coat of lubricant to the parts of the inner pad that come in contact with the caliper piston and mounting areas. As you install the brake pads in the caliper support, make sure the wear sensors are downward and at the leading edge of the rotor when the tire rotates. Push the brake pads into the support, holding the metal shoe edge against the spring end of the pad clips. This slightly bends the spring ends and lets the notches engage with the support. This step does not apply for the Grand Prix RPO Z7U.

3 Swing the caliper back into place over the brake pads and replace the mounting bolt. Reconnect the cable support bracket and tighten the bolt to 32-ft.lb. (43 Nm). Remove the lug nuts holding the rotor in place. For the Grand Prix RPO Z7U, Slide the caliper back into place on the disc rotor. Reconnect the parking brake cable. Insert and tighten the caliper mounting bolts to 44 foot lb. (60 Nm).

4 Replace the tire wheel assembly. Lower the car to the ground.

5 Pump the brake pedal a few times to seat the brake pads. Do this before trying to move your car.

6 Add fluid to the master cylinder container to replace any you removed before you removed the old brake pads.

7 Season the brake pads by making only gentle stops when you are driving for the first week

Thanks!

take c clamp and socket inside caliper and open it

Just use one of the old break pads and a C-clamp of proper size like a 3-inch for compression on the cylinder.......Hope this helps.

remove the caliper, by removing the two holding bolts, then use a old brake pad against the pistons and a c clamp and push piston all the way in, next is to clean and lube pad mounting surface and the caliper slide pin, then install new pads on bracket then caliper and tighten caliper bolts, heres a diagram to help you,

1. Raise and support the vehicle.
2. Remove the front wheels with a 19mm tire socket or equivalant.
3. Locate the brake caliper and remove the two retaining bolts from the caliper(they are iether a allen wrench or torx style bolt)
4. Use a prybar and pry gently between the rotoe and caliper to loosen the caliper from its postion then lift it off the bracket.
5. Remove the old pads from the caliper and using a big c clamp or calpiper compression tool and the old inner pad compress the caliper piston back in all the way.
6. Install new pads into caliper and re assemble in reverse order.

60 will is the right socket, I'll recomend getting one in 1/2" drive, they can be tight!

Usually GM front calipers are held on by a bolt with a 14mm head or a 3/8 allen keyhead.

the rear calipers will have to be turned in(screwed in). do not try to push then straight in or you will have to replace the caliper

no 10mm or 12mm you will also need a ebrake caliper reset tool