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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1998 GMC G35/G3500 VAN car and truck
repair procedures including GMC engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your 1998 GMC G35/G3500 VAN automobile. Try the Automotix DIY solution today!
We have info for following modifications of 1998 GMC G35/G3500 VAN
- 1998 GMC G35/G3500 VAN 5.7 V8 GAS, CID:350, Fuel Injection, Aspiration:350, Engine VIN:, Desg:R
- 1998 GMC G35/G3500 VAN 6.5 V8 DIESEL, CID:395, Fuel Injection, Aspiration:395, Engine VIN:, Desg:F
- 1998 GMC G35/G3500 VAN 7.4 V8 GAS, CID:454, Fuel Injection, Aspiration:454, Engine VIN:, Desg:J
BRAKE SERVICE PROCEDURES FOR 1998 GMC G35/G3500 VAN AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 GMC G35/G3500 VAN cars and light trucks from 1990+.
Hydraulic Brake Systems -> Brake System Bleed -> Hydraulic System Flush -> Manual Bleed -> Master Cylinder Bleed -> Parking Brake Bleed -> Pressure Bleed
Vehicle: 1998 GMC G35/G3500 VAN 7.4 V8 GAS
Manual Bleed
- If vehicle is equipped with power brakes, remove vacuum reserve by applying brakes several times with engine off.
- Fill master cylinder reservoirs with suitable brake fluid. Ensure to always keep master cylinder reservoirs at least half full during entire bleeding procedure.
- If master cylinder is suspected to have air in the bore, it must be bled first. To bleed master cylinder, proceed as follows:
- Disconnect forward brake pipe connection at master cylinder.
- Allow brake fluid to fill master cylinder bore until it begins to flow from forward pipe connector port.
- Connect ...
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BRAKE SERVICE PROCEDURES FOR 1998 GMC G35/G3500 VAN AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 GMC G35/G3500 VAN cars and light trucks from 1990+.
Power Brake Units -> Bendix Brake Booster -> Power Brake Unit Replacement -> Astro & Safari -> C & K Series -> G Series -> P Series
Vehicle: 1998 GMC G35/G3500 VAN 6.5 V8 DIESEL
Astro & Safari
- Apply parking brake.
- Disconnect reservoir and power steering hoses from booster.
- Remove master cylinder to brake booster retaining nuts.
- Position and support master cylinder away from booster. Do not remove hydraulic lines from master cylinder.
- Remove booster rod from top of brake pedal.
- Remove booster mounting nuts from inside of vehicle.
- Remove booster assembly and gasket.
- Reverse procedure to install, noting the following:
- Torque booster mounting nuts to 27 ft. lbs.
- Torque master cylinder retaining nuts to 27 ft. lbs.
- Torque power steering hoses to booster n...
CLICK HERE TO GET FULL ACCESS TO 1998 GMC G35/G3500 VAN BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1998 GMC G35/G3500 VAN AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 GMC G35/G3500 VAN cars and light trucks from 1990+.
Power Brake Units -> Delco Brake Booster -> Description -> Operation -> Single Diaphragm Type -> Tandem (Dual) Diaphragm Type
Vehicle: 1998 GMC G35/G3500 VAN 7.4 V8 GAS
In order to properly service power brake systems, a thorough understanding of the various power assist systems 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. Two basic types of power assist mechanisms are used: vacuum assist diaphragm assemblies which use engine vacuum and in some cases vacuum from an external vacuum pump, and hydraulic assist assemblies which use hydraulic pressure developed by an external pump (...
CLICK HERE TO GET FULL ACCESS TO 1998 GMC G35/G3500 VAN BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1998 GMC G35/G3500 VAN AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 GMC G35/G3500 VAN cars and light trucks from 1990+.
Hydraulic Brake Systems -> Description -> Hydraulic Control Valves -> Master Cylinder
Vehicle: 1998 GMC G35/G3500 VAN 5.7 V8 GAS
Master Cylinder
Some vehicles use a conventional tandem master cylinder with two hydraulic pistons operating in-line. The primary piston controls the front brake system and the secondary piston controls the rear brake system.
Other models use a master cylinder that operates the same as the conventional master cylinder, but also incorporates a quick take-up feature in the rear chamber to reduce excessive pedal travel which may result from increased fluid displacement required to move the low drag caliper piston out against the rotor.
The quick take-up uses a spring-loaded ball check val...
CLICK HERE TO GET FULL ACCESS TO 1998 GMC G35/G3500 VAN BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1998 GMC G35/G3500 VAN AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 GMC G35/G3500 VAN cars and light trucks from 1990+.
Power Brake Units -> Bendix Brake Booster -> Power Brake Unit Replacement -> Astro & Safari -> C & K Series -> G Series -> P Series
Vehicle: 1998 GMC G35/G3500 VAN 5.7 V8 GAS
Astro & Safari
- Apply parking brake.
- Disconnect reservoir and power steering hoses from booster.
- Remove master cylinder to brake booster retaining nuts.
- Position and support master cylinder away from booster. Do not remove hydraulic lines from master cylinder.
- Remove booster rod from top of brake pedal.
- Remove booster mounting nuts from inside of vehicle.
- Remove booster assembly and gasket.
- Reverse procedure to install, noting the following:
- Torque booster mounting nuts to 27 ft. lbs.
- Torque master cylinder retaining nuts to 27 ft. lbs.
- Torque power steering hoses to booster n...
CLICK HERE TO GET FULL ACCESS TO 1998 GMC G35/G3500 VAN BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1998 GMC G35/G3500 VAN AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1998 GMC G35/G3500 VAN cars and light trucks from 1990+.
Power Brake Units -> Delco Brake Booster -> Troubleshooting -> Brakes Grab -> Hard Pedal -> Slow Or No Release
Vehicle: 1998 GMC G35/G3500 VAN 7.4 V8 GAS
Hard Pedal
- Internal vacuum leak.
- Faulty control valve.
- Broken or damaged hydraulic brake lines.
- Collapsed or damaged vacuum hose.
- Plugged or loose vacuum fitting.
- Bad stud welds on front or rear housing on power head.
- Faulty booster diaphragm.
- Restricted air filter element.
- Worn or distorted reaction plate or levers.
- Cracked or broken pow...
CLICK HERE TO GET FULL ACCESS TO 1998 GMC G35/G3500 VAN BRAKE SERVICE PROCEDURES
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