GM 19178358
Brake Pads, Front

Begin the Brake Pad replacement by watching the master cylinder reservoir fluid level; no need to drain fluid if it stands at mid-range but fluid needs to be lowered to mid-range when above the mark. Lift the vehicle then disconnect the tire and wheel components. Trap the brake caliper in place with a large c-clamp touching both its backside to outboard pad while tightening until the pistons compress. Secure the brake caliper with heavy mechanic wire to shield the hydraulic brake hose when you withdraw the guide pin bolt from its lower position. Push brake caliper upward and take away both outer and inner brake pads. Replace old Brake Pad shims before you begin with new disc brake pads. Clean both the brake caliper needle and the mating surfaces. For used brake pads keep the shims and clean them with denatured alcohol until they are dry. Cover the brake caliper with mechanic wire and install new brake shims before putting in the outer Brake Pad then the inner Brake Pad. Hold up the caliper with mechanic wire during a low pivot to install it on the Brake Caliper Bracket. Fasten the lower caliper guide pin bolt by turning it to 64 nm (47 lb ft). Arrange the tire and wheel before lowering the vehicle. With the engine turned off apply the brake pedal steadily to 2/3rd depth and then let it return to its initial position. Keep pushing the brake pedal for 15 seconds during breaks to thoroughly position brake caliper pistons and pads correctly. Top the master cylinder reservoir to specification and perform break in procedure on pads and rotors.

To start the Brake Pad replacement process check the master cylinder reservoir fluid level first. Drain the fluid when the level is between the maximum and minimum markers until it reaches midway point. Lift the vehicle using jack stands and take out the tire while keeping the wheel in place. Apply the large c-clamp to both brake caliper sides while pressing them against the rear and outboard brake pads to compress the pistons. Secure the brake caliper safely in place with heavy mechanic wire after taking away the lower guide pin bolt. Push the caliper vertically to expose the brake pads then uninstall both pads from inside and outside. When changing brake pads replace the discarded shims and clean both sides of the caliper bracket unit. To put in new brake pads work with new Brake Pad shims before setting the outer and inner brake pads. Position the brake caliper on the Brake Caliper Bracket while keeping it stable with heavy mechanic wire and lowering it downward. Slide in and screw the lower brake caliper guide pin bolt until it reaches 64 nm (47 lb ft) tightness. Put the tire back in place, lower the vehicle and press the brake pedal 2/3 of its range with the engine off. Slowly release the pedal afterward. Apply your brake for 15 seconds and do it again until your brake pedal remains strong to ensure the brake caliper pistons and pads fit correctly. Complete the process by adding brake fluid to the master cylinder until it reaches its correct level and smooth out Brake Pad and rotor surfaces.

Install a large C-clamp over the top of the brake caliper housing against the back of the outboard brake pad and slowly tighten it.

Pump the brake pedal slowly and firmly to seat and burnish the new brake pads.

Remove the upper brake caliper guide pin bolt and pivot the brake caliper downward, supporting it with heavy mechanics wire.

Remove excess fluid with a brake fluid extractor to reach the midway point.

Remove excess fluid with a brake fluid extractor to reach the midway point.

Lower the vehicle and fill the brake master cylinder reservoir.

Lower the vehicle and fill the brake master cylinder reservoir if needed.

Remove the lower brake caliper guide pin bolt and pivot the brake caliper upward, supporting it with heavy mechanics wire.