Chevrolet Silverado / GMC Sierra. Service manual — part 1521

Fig. 41: View Of Front Brake Caliper Components
Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

Preliminary Procedures

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and

Installation .

CAUTION:

Refer to Brake Dust Caution .

NOTE:

Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its
mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this
manner will cause the flexible brake hose to bear the weight of the caliper, which may cause
damage to the brake hose and in turn may cause a brake fluid leak.

Brake Caliper Guide Pin Bolt (Qty: 2)

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 BRAKES Disc Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

FRONT BRAKE CALIPER BRACKET REPLACEMENT (JD9, JF3, JF7)

1

Procedure:
Without disconnecting the brake caliper hose, remove and support the brake
caliper with heavy mechanics wire or equivalent.

Tighten: 108 N.m (80 lb ft)

2

Disc Brake Pad (Qty: 2)
Tip: Note the location of the inner and outer brake pads to aid installation.

3

Brake Pad Shim (Qty: 2)

Procedure

1. Thoroughly clean the brake pad hardware mating surfaces of the caliper

bracket of any debris and corrosion.

2. Apply a very thin coating of high temperature silicone brake lubricant to

the pad hardware mating surfaces of the caliper bracket only.

4

Brake Caliper Bracket Bolt (Qty: 2)

Procedure

1. Remove all traces of the adhesive patch on the brake caliper bracket bolts

and threaded holes of the brake caliper bracket.

2. Clean the brake caliper bracket bolt threads and the threaded holes of the

brake caliper bracket with denatured alcohol or equivalent and allow to
dry.

3. Apply threadlocker G/M P/N 12345493 (Canadian P/N 10953488) to 2/3

of the threaded portion of the brake caliper bolts.

Tighten: 300 N.m (221 lb ft)

5

Brake Caliper Bracket

2008 Chevrolet Silverado 1500

2008 BRAKES Disc Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 42: View Of Front Brake Caliper Components
Courtesy of GENERAL MOTORS CORP.

Callout

Component Name

Preliminary Procedures

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and

Installation .

CAUTION:

Refer to Brake Dust Caution .

NOTE:

Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its
mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this
manner will cause the flexible brake hose to bear the weight of the caliper, which may cause
damage to the brake hose and in turn may cause a brake fluid leak.

Brake Caliper Guide Pin Bolt (Qty: 2)

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 BRAKES Disc Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

1

Procedure

1. DO NOT use any air tools to remove or install the brake caliper guide pin

bolts. Use hand tools ONLY.

2. Install an open end wrench to hold the caliper guide pin in line with the

brake caliper while removing or installing the caliper guide pin bolts. DO
NOT allow the open end wrench to contact the brake caliper. Allowing
the open end wrench to contact the brake caliper will cause a pulsation
when the brakes are applied.

3. Ensure the brake caliper guide pin seals are fully seated in the groove of

the brake caliper guide pins and the guide pins slide freely in the caliper
bracket bores.

Tighten: 100 N.m (74 lb ft)

2

Disc Brake Caliper
Procedure:
Without disconnecting the brake caliper hose, remove and support the brake
caliper with heavy mechanics wire or equivalent.

3

Disc Brake Pad (Qty: 2)
Tip: Note the location of the inner and outer brake pads to aid installation.

4

Brake Pad Shim (Qty: 2)

Procedure

1. Thoroughly clean the brake pad hardware mating surfaces of the caliper

bracket of any debris and corrosion.

2. Apply a very thin coating of high temperature silicone brake lubricant to

the pad hardware mating surfaces of the caliper bracket only.

5

Brake Caliper Bracket Bolt (Qty: 2)

Procedure

1. Remove all traces of the adhesive patch on the brake caliper bracket bolts

and threaded holes of the brake caliper bracket.

2. Clean the brake caliper bracket bolt threads and the threaded holes of the

brake caliper bracket with denatured alcohol or equivalent and allow to
dry.

3. Apply threadlocker G/M P/N 12345493 (Canadian P/N 10953488) to 2/3

2008 Chevrolet Silverado 1500

2008 BRAKES Disc Brakes - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado