1995 Oldsmobile Silhouette Brake Service (ONLINE REPAIR MANUALS)

4WD Models

• Raise and support vehicle.
• Remove tire and wheel.
• Remove caliper as outlined under "Caliper Service."
• On ^K1500 and ^K2500 models, remove rotor.
• On K3500 models proceed as follows:
• Remove hub retaining nut.
• Remove four hub/rotor retaining bolts on back side of spindle.
• Using suitable wheel puller, remove rotor assembly.
• On K1500 and K2500 models, reverse procedure to install, tightening all bolts to specifications. Install caliper as outlined under "Caliper Service."
• On K3500 models, reverse procedure to install, noting the following:
• Torque hub nut to 173 ft. lbs
• Torque hub and bear...

Certain general service procedures apply, regardless of whether the brakes are vacuum or hydraulically assisted. Only top quality, clean brake fluid should be used. More seals and valves are used with power brake systems than with ordinary brakes, so an inferior brake fluid will do much more damage. For the same reason, be sure all dirt is kept out of the system. Additionally, on models with hydraulic assist brakes, care must be taken not to mix the fluids of the booster hydraulic system and brake hydraulic system as the fluids are not compatible.

If the power unit fails, the bra...

The braking system can be bled manually or with pressure bleeding equipment. If bleeding manually, check fluid level frequently.

Brake fluid should never be reused. Before driving the vehicle, check brake operation to ensure a firm pedal has been obtained.

Brake fluid will damage electrical connections and painted surfaces. Use shop cloths, suitable containers, and fender covers to prevent brake fluid from contacting these areas. Always seal and wipe off brake fluid containers to prevent spills.

Manual Bleeding

C/K, G, M/L, P & S/T Series

• If vehicle is equipped with a vacuum or hy...

Accessing Diagnostic Trouble Codes

1992

Diagnostic trouble codes can be accessed by connecting a TECH 1 or equivalent scan tool or by manually grounding the Assembly Line Diagnostic Link (ALDL) connector. To manually ground the ALDL connector, connect a jumper wire between terminals A and H, Fig. , and observe the flashes of the brake warning lamp. Note the following when performing the Diagnostic Circuit Check to access diagnostic trouble codes:

• When terminals are jumped, count number of short flashes starting from initial long flash, include long flash in count.
• The count se...

1992

The Rear Wheel Anti-Lock (RWAL) system, Fig. , reduces the occurrence of rear wheel lockup during severe braking by regulating rear hydraulic line pressure. Pressure applied to the rear wheel brakes is regulated by a control valve assembly located under the master cylinder. The control valve consists of a dump valve which releases hydraulic pressure into an accumulator, and an isolation valve which holds rear brake pressure. Operation of the dump valve and isolation valve is controlled by an Electronic Control Unit (ECU) which is mounted next to the master cylinder.

The ECU rec...

Service Brake

Except 1992-94 Lumina APV, Silhouette & Trans Sport

These brakes have self-adjusting shoe mechanisms that assure correct lining-to-drum clearances at all times. The automatic adjusters operate only when the brakes are applied as the vehicle is moving rearward or when the car comes to an uphill stop.

Although the brakes are self-adjusting, an initial adjustment is necessary after the brake shoes have been relined or replaced, or when the length of the adjusting screw has been changed during some other service operation.

Frequent usage of an automatic transmission forward ra...