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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1993 GMC Yukon 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
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BRAKE SERVICE PROCEDURES FOR 1993 GMC Yukon AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 GMC Yukon cars and light trucks from 1990+.
Disc Brakes -> Delco-Moraine Single Piston Caliper -> Rotor Replacement -> 2WD Models -> 4WD Models
Vehicle: 1993 GMC Yukon 5.7 V8 GAS
2WD Models
- Raise and support vehicle.
- Remove tire and wheel assembly.
- Remove caliper as outlined under "Caliper Service."
- Remove grease cap from hub/rotor.
- 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...
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BRAKE SERVICE PROCEDURES FOR 1993 GMC Yukon AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 GMC Yukon cars and light trucks from 1990+.
Anti-lock Brakes -> ABS-VI Anti-Lock Brake System -> System Service -> ABS Hydraulic Modulator & Master Cylinder Assembly -> ABS Hydraulic Modulator Gears -> ABS Hydraulic Modulator Solenoid Assembly -> ABS Lamp Driver Module -> Accelerometer -> Brake System Bleed -> Component Replacement -> Electronic Brake Control Module (EBCM) -> Enable Relay -> Front Wheel Speed Sensor -> Left Front Wheel Speed Sensor Jumper Harness -> Lumina APV, Silhouette & Trans Sport -> Manual Bleeding -> Pressure Bleeding -> Rear Speed Sensor Wiring Harness -> Rear Wheel Speed Sensor -> Tracker
Vehicle: 1993 GMC Yukon 5.7 V8 GAS
Brake System Bleed
Pressure Bleeding
Lumina APV, Silhouette & Trans Sport
- Remove master cylinder cover, ensure reservoir is properly filled.
- Connect bleeder adapter tool No. J 35589, or equivalent, to master cylinder reservoir.
- Connect bleeder adapter to pressure bleeding equipment.
- Connect a clear plastic bleeder hose to modulator assembly rearward bleeder valve, submerge other end of hose into clean container partially filled with brake fluid.
- Adjust pressure bleeding equipment to 5-10 psi, then wait for approximately 30 seconds to insure there is no leakage.
- Adjust pressure bleed equi...
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BRAKE SERVICE PROCEDURES FOR 1993 GMC Yukon AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 GMC Yukon cars and light trucks from 1990+.
Drum Brakes -> Adjustments -> 1992-94 -> 1992-94 Lumina APV, Silhouette & Trans Sport -> 1993-96 Astro/Safari & 1995-96 S & T Series -> 1995-96 -> Automatic Apply Parking Brakes -> Bravada, 1992 Astro/Safari & 1992-94 S & T Series -> C & K Series -> Control Rod Adjustment -> Duo-Servo Brakes -> Except 1992-94 Lumina APV, Silhouette & Trans Sport -> G-Van & P Series -> Lever Type -> Lumina APV, Silhouette & Trans Sport -> Manual Parking Brake -> Non-Servo Brakes -> Optional Method -> Pedal Type -> Propeller Shaft Type -> Service Brake -> Standard Method -> Tracker
Vehicle: 1993 GMC Yukon 5.7 V8 GAS
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...
CLICK HERE TO GET FULL ACCESS TO 1993 GMC Yukon BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1993 GMC Yukon AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 GMC Yukon cars and light trucks from 1990+.
Anti-lock Brakes -> ABS-VI Anti-Lock Brake System -> Description -> System Operation
Vehicle: 1993 GMC Yukon 5.7 V8 GAS
System Operation
This braking system, Fig. , is designed to reduce the occurrence of wheel lock-up during severe braking conditions. To accomplish this function, the system regulates hydraulic brake line pressure when a microprocessor, located inside the Electronic Brake Control Module (EBCM), determines one or more of the wheels is about to lose traction during braking. The EBCM will allow the hydraulic modulator to change brake pressures several times each second to provide maximum vehicle control. This system cannot increase brake pressure above the master cylinder pressure appl...
CLICK HERE TO GET FULL ACCESS TO 1993 GMC Yukon BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1993 GMC Yukon AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 GMC Yukon cars and light trucks from 1990+.
Power Brake Units -> Delco-Moraine Brake Boosters -> Troubleshooting -> Brakes Grab -> Hard Pedal -> Slow Or No Release
Vehicle: 1993 GMC Yukon 5.7 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 1993 GMC Yukon BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1993 GMC Yukon AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 GMC Yukon cars and light trucks from 1990+.
Hydraulic Brake Systems -> Description -> Hydraulic Control Valves -> Master Cylinder
Vehicle: 1993 GMC Yukon 5.7 V8 GAS
Master Cylinder
Some vehicles use a conventional tandem master cylinder with two hydraulic pistons operating inline. 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 valv...
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