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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1998 GMC Safari car and truck
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BRAKE SERVICE PROCEDURES FOR 1998 GMC Safari AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 GMC Safari cars and light trucks from 1990+.
Power Brake Units -> Bendix Brake Booster -> Description
Vehicle: 1998 GMC Safari 4.3 V6 GAS
In order to properly service power brake systems, a thorough understanding of the power assist system is necessary. These systems provide a mechanical assist, acting to increase the force applied to the master cylinder piston by the driver while decreasing the effort necessary to obtain acceptable stopping performance.
Hydraulic assist units incorporate a basic open center spool valve, hydraulic cylinder and an accumulator assembly in a common housing. When the brake pedal is depressed, the hydraulic piston moves forward closing off fluid relief passages, the spool valve applies flui...
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BRAKE SERVICE PROCEDURES FOR 1998 GMC Safari AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 GMC Safari cars and light trucks from 1990+.
Hydraulic Brake Systems -> Component Replacement -> Master Cylinder
Vehicle: 1998 GMC Safari 4.3 V6 GAS
Master Cylinder
- On models equipped with manual brake system, disconnect master cylinder pushrod from brake pedal.
- On all models, disconnect all wire conne...
CLICK HERE TO GET FULL ACCESS TO 1998 GMC Safari BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1998 GMC Safari AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 GMC Safari cars and light trucks from 1990+.
Anti-lock Brakes -> Kelsey-Hayes -> Precautions -> Battery Ground Cable -> Delco LOC II -> General Service Precautions -> Radio Security System -> Theftlock
Vehicle: 1998 GMC Safari 4.3 V6 GAS
Battery Ground Cable
Prior to service disconnect battery ground cable and isolate as required.
Radio Security System
Theftlock
If the Theftlock system is active when battery power is interrupted, the customers security code must be entered to restore proper function of the radio. To unlock a secured radio after power loss, proceed as follows:
- "LOC" appears with ignition in On position.
- Press "NM" and "000" will appear on display.
- Press "NM" again to make last two digits agree with security code.
- Press "HR" to make first 1 or 2 digits agree with security code.
- Press "AM-FM" to select code entered. "SEC" wi...
CLICK HERE TO GET FULL ACCESS TO 1998 GMC Safari BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1998 GMC Safari AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 GMC Safari cars and light trucks from 1990+.
Disc Brakes -> Delco Single Piston Sliding Caliper -> Rotor Replacement -> 2WD Models -> 4WD Models -> Astro, Blazer, Bravada, Jimmy, K1500/2500 & T Series Pickup -> Except Montana, Silhouette, Trans Sport & Venture -> Front -> K3500 -> Montana, Silhouette, Trans Sport & Venture -> Rear
Vehicle: 1998 GMC Safari 4.3 V6 GAS
2WD Models
Except Montana, Silhouette, Trans Sport & Venture
Front
- Raise and support vehicle.
- Remove tire and wheel assembly.
- Remove caliper as outlined under "Caliper Service."
- Remove grease cap from hub/rotor, Fig. .
- Remove cotter pin, nut and washer.
- Remove hub/rotor from spindle, being careful not to damage spindle threads or outer bearing.
- Reverse procedure to install, noting the following:
- Apply high-temperature wheel bearing grease to inner and outer wheel bearings.
- Torque nut to 12 ft. lbs. while turning wheel assembly forward by hand, back nut off one flat or until hole in spindle...
CLICK HERE TO GET FULL ACCESS TO 1998 GMC Safari BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1998 GMC Safari AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 GMC Safari cars and light trucks from 1990+.
Hydraulic Brake Systems -> Component Service -> Assemble -> Bendix Master Cylinder -> Delco Master Cylinder -> Disassemble -> Tracker Master Cylinder -> Wheel Cylinder
Vehicle: 1998 GMC Safari 4.3 V6 GAS
Delco Master Cylinder
When performing the following procedures, refer to Figs. and noting that the composite reservoir may vary in design.
Disassemble
- Remove master cylinder from vehicle.
- Remove reservoir cover and diaphragm. Discard old brake fluid in reservoir.
- Inspect cover and diaphragm. Replace if cut, cracked or deformed.
- Remove fluid level switch and proportioning valve assembly, if equipped.
- Depress primary piston and remove lock ring.
- Plug primary fluid outlet (outlet nearest to cowl when master cylinder is installed), then apply compressed air into secondary fluid outlet t...
CLICK HERE TO GET FULL ACCESS TO 1998 GMC Safari BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1998 GMC Safari AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 GMC Safari cars and light trucks from 1990+.
Anti-lock Brakes -> Kelsey-Hayes -> System Service -> 1997-2000 C & K Series Except 1999-2000 Sierra, Silverado & 2000 Suburban, Tahoe & Yukon -> 1997-2000 w/310 ABS -> 1999-2000 Sierra, Silverado & 2000 Suburban, Tahoe, Yukon & 2001 C & K Series -> 2000-01 w/325 ABS -> Astro & Safari -> Brake Pressure Modulator Valve (BPMV) -> Brake System Bleed -> C & K Series Except C3500HD -> C3500HD -> Component Replacement -> Electronic Brake Control Module (EBCM) -> Front Wheel Speed Sensor -> G Van -> Installation -> Manual Bleed -> P Series -> Pressure Bleed -> Removal -> S & T Series
Vehicle: 1998 GMC Safari 4.3 V6 GAS
Brake System Bleed
Gravity and vacuum bleeding procedures are not recommended for use with the anti-lock brake system. The manual bleed procedure is the preferred method, although pressure bleeding is also possible. Do not pump the brake pedal during the bleeding process, as fluid aeration may occur.
Manual Bleed
- Raise and support vehicle, then connect a clear plastic tube to brake bleed screw at righthand rear wheel.
- Place free end of tube in a glass jar partially filled with clean brake fluid. Ensure end of tube remains submerged in fluid and master cylinder reservoir is kept full.
- ...
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