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Buick, Oldsmobile, Pontiac Full-Size Models (FWD) Repair Manual 1985-2005

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This Haynes DIY repair manual covers the following Buick, Oldsmobile, and Pontiac models, C- and H-body vehicles with front wheel drive (FWD), 1985 to 2005:

  • Buick: LeSabre, Electra, and Park Avenue

  • Oldsmobile: Delta 88 Royale, Ninety Eight, and Regency

  • Pontiac: Bonneville
Note: this manual does NOT include diesel engine or supercharger information, V8, or rear wheel drive models.


Book Excerpt: 1985-2005 Buick, Oldsmobile, Pontiac Full-Size Models (FWD) Repair Manual

POWER BRAKE BOOSTER: INSPECTION, REMOVAL AND INSTALLATION

Refer to illustration 12.6

Warning: Some models covered by this manual are equipped with airbags. Always put the steering wheel in the straight-ahead position, place the ignition switch in the lock position and disable the airbag system before working in the vicinity of the impact sensors, steering column or instrument panel to avoid to avoid the possibility of accidental deployment of the airbag(s ), which could cause personal injury (see Chapter 12 for the airbag disarming procedure).

Caution: If the vehicle is equipped with a Delco Loc II of Theftlock audio system, make sure you have the correct activation code before disconnecting the battery. See the information at the front of the manual for reactivation.

  1. The power brake booster unit requires no special maintenance apart from periodic inspection of the vacuum hose and the case. Early models have an in-line filter which should be inspected periodically and replaced if clogged or damaged.

  2. Dismantling of the power unit requires special tools and is not ordinarily done by the home mechanic. If a problem develops, install a new or factory rebuilt unit.

  3. On later models, remove the fuel-injection sight shield and also disconnect the battery. Remove the nuts attaching the master cylinder to the booster (see Section 7) and carefully pull pull the master cylinder forward until it clears the mounting studs. Be careful to avoid bending or kinking the brake lines.

  4. Disconnect the vacuum hose where it attaches to the power brake booster. On 2001 and later models, disconnect the EGR valve electrical connector and position the wiring harness out of the way, then unbolt the cruise control module from the firewall and set it aside.

  5. From the passenger compartment disconnect the power brake pushrod from the top of the brake pedal.

  6. Also from this location, remove the nuts attaching the booster to the firewall (see illustration).

  7. Carefully lift the booster unit away from the firewall and out of the engine compartment.

  8. To install the booster, place it in position and tighten the mounting nuts. Reconnect the brake pedal.

  9. Install the master cylinder and vacuum hose.

  10. Carefully test the operation of the brakes before driving the vehicle in traffic.

REPAIR OF DENTS
  1. When repairing dents, the first job is to pull the dent out until the affected area is as close to possible to its original shape. there is no point in trying to restore the original shape completely as the metal in the damaged area will have stretched on impact and cannot be restored to its original contours. It is better to bring the level of the dent up to a point which is about 1/8-inch below the level of the surrounding metal. In cases where the dent is very shallow, it is not worth trying to pull it out at all.

  2. If the back side of the dent is accessible, it can be hammered out gently from behind using a soft-face hammer. While doing this, hold a block of wood firmly against the opposite side of the metal to absorb the hammer blows and prevent the metal from being stretched.

  3. If the dent is in a section of the body which has double layers, or some other factor that makes it inaccessible from behind, a different technique is required. Drill several small holes through the metal inside the damaged area, particularly in the deeper sections. Screw long, self tapping screws into the holes just enough for them to get a good grip in the metal. Now the dent can be pulled out by pulling on the protruding heads of the screws with locking pliers.

  4. The next stage or repair is the removal of paint from the damaged area and from an inch or so of the surrounding metal. This is easily done with a wire brush or sanding disk in a drill motor, although it can be done just as effectively by hand with sandpaper. To complete the preparation for filling, score the surface of the bare metal with a screwdriver or the tang of a file or drill small holes in the affected area. This will provide a good grip for the filler material. to complete the repair, see the Section on filling and painting.

Subject: 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 Buick, Oldsmobile, Pontiac Full-Size Models (FWD) service, maintenance, repair. ISBN-10: 1563926253 | ISBN-13: 9781563926259 | Haynes 19020

TABLE of CONTENTS:

  • Introduction: Vehicle identification numbers; Buying parts; Maintenance techniques, and more.
  • Tune-up and routine maintenance
  • Engine and overhaul procedures
  • Cooling, heating and air-conditioning systems
  • Fuel and exhaust systems
  • Engine electrical systems
  • Emissions control systems
  • Transmission
  • Brakes
  • Suspension and steering systems
  • Body
  • Chassis electrical system
  • Wiring diagrams

  • Publisher: Haynes Manuals
  • Pages: 264 - Hundreds of b&w photos and illustrations
  • Binding: Paperback - 8.25 x 10.75 inches
  • ISBN: 978-1-56392-625-9
  • Years: 1985 - 2005
  • Buick, Olds, Pontiac Full-Size Models Repair Manual 1985-2005
    $19.95