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We have info for following modifications of 1990 GMC V1500 Suburban
- 1990 GMC V1500 Suburban 6.2 V8 DIESEL, CID:379, Fuel Injection, Aspiration:379, Engine VIN:, Desg:C
- 1990 GMC V1500 Suburban 5.7 V8 GAS, CID:350, Fuel Injection, Aspiration:350, Engine VIN:, Desg:K
BRAKE SERVICE PROCEDURES FOR 1990 GMC V1500 Suburban AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 GMC V1500 Suburban cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> Delco-Moraine Single Piston Caliper -> BRAKE PAD, Replace -> INSTALLATION -> REMOVAL
Vehicle: 1990 GMC V1500 Suburban 5.7 V8 GAS
REMOVAL
- Remove caliper assembly as outlined above.
- Remove inboard pad with retainer spring. Dislodge outboard pad and position caliper on the front suspension so the brake hose will not support the weight of the caliper.
- Remove two sleeves from inboard ears of the caliper.
- Remove four rubber bushings from the grooves in each of the caliper ears.
INSTALLATION
- Lubricate new sleeves, rubber bushings, bushing grooves and mounting bolt ends with Delco Silicone Lube or equivalent.
- Install new bushings and sleeves in caliper ears. Position the sleeve so that the end toward the pad is flush...
CLICK HERE TO GET FULL ACCESS TO 1990 GMC V1500 Suburban BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 GMC V1500 Suburban AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 GMC V1500 Suburban cars and light trucks from 1990+.
DRUM BRAKES, GENERAL MOTORS -> Drum Brake Service -> Removal -> 1990-91 C & K SERIES w/NON-SERVO BRAKES -> EXCEPT TRACKER & 1990-91 C & K SERIES w/NON-SERVO BRAKES -> TRACKER
Vehicle: 1990 GMC V1500 Suburban 5.7 V8 GAS
EXCEPT TRACKER & 1990-91 C & K SERIES w/NON-SERVO BRAKES
- Raise and support vehicle, then remove tire and wheel assembly.
- Remove brake drum. If brake lining is dragging on brake drum, back off brake adjustment by rotating adjustment screw. Refer to individual truck chapter for procedure. If brake drum is rusted or corroded to axle flange and cannot be removed, lightly tap flange to drum mounting surface with a suitable hammer.
- Using brake spring pliers or equivalent, unhook primary and secondary return springs, Figs. through . Observe location of brake parts being removed to aid during ins...
CLICK HERE TO GET FULL ACCESS TO 1990 GMC V1500 Suburban BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 GMC V1500 Suburban AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 GMC V1500 Suburban cars and light trucks from 1990+.
HYDRAULIC BRAKE SYSTEMS, GENERAL MOTORS -> WHEEL CYLINDER OVERHAUL
Vehicle: 1990 GMC V1500 Suburban 5.7 V8 GAS
- Raise and support vehicle.
- Remove wheel, drum and brake shoes.
- Disconnect hydraulic line at wheel cylinder. Do not pull metal line away from cylinder, as this may kink or bend line. Line will separate from cylinder when cylinder is moved away from brake backing plate.
- Remove wheel cylinder-to-brake plate attaching screws, then the wheel cylinder.
- Remove boots, pistons, springs and cups from cylinder, Fig. .
- Clean all parts with brake fluid.
- Inspect cylinder bore. A scored bore may be honed as long as the diameter is not increased by ...
CLICK HERE TO GET FULL ACCESS TO 1990 GMC V1500 Suburban BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 GMC V1500 Suburban AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 GMC V1500 Suburban cars and light trucks from 1990+.
ANTI-LOCK BRAKES, GENERAL MOTORS -> Four Wheel Anti-Lock Brake System -> TROUBLESHOOTING
Vehicle: 1990 GMC V1500 Suburban 5.7 V8 GAS
Refer to Figs. throug...
CLICK HERE TO GET FULL ACCESS TO 1990 GMC V1500 Suburban BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 GMC V1500 Suburban AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 GMC V1500 Suburban cars and light trucks from 1990+.
DISC BRAKES, GENERAL MOTORS -> General Information -> TROUBLESHOOTING -> BRAKE RATTLE -> BRAKE ROUGHNESS OR CHATTER; PEDAL PUMPING -> CALIPER BRAKE FLUID LEAK -> EXCESSIVE PEDAL EFFORT -> EXCESSIVE PEDAL TRAVEL -> HEAVY BRAKE DRAG -> NO BRAKING EFFECT WHEN BRAKE PEDAL IS DEPRESSED -> PULL, UNEVEN OR GRABBING BRAKES -> REAR BRAKES LOCKING ON APPLICATION
Vehicle: 1990 GMC V1500 Suburban 6.2 V8 DIESEL
EXCESSIVE PEDAL TRAVEL
- Worn brake linings.
- Disc pads knock back after cornering or rough road travel.
- Piston and linings not properly seated or positioned.
- Insufficient fluid in system.
- Loose wheel bearing adjustment.
- Damaged or worn caliper piston seal.
- Improper booster pushrod adjustment.
- Pads out of flat more than .005 inch.
- Rear brake automatic adjusters inoperative.
- Improperly ground rear brake shoes.
BRAKE ROUGHNESS OR CHATTER; PEDAL PUMPING
- Excessive lateral runout of rotor.
- Rotor excessively out of parallel.
EXCESSIVE PEDAL EFFORT
- Frozen or seized pistons.
- Brake fluid, oil or grease on ...
CLICK HERE TO GET FULL ACCESS TO 1990 GMC V1500 Suburban BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1990 GMC V1500 Suburban AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1990 GMC V1500 Suburban cars and light trucks from 1990+.
POWER BRAKE UNITS, GENERAL MOTORS -> Delco-Moraine Brake Boosters -> TANDEM DIAPHRAGM TYPE -> Assemble -> BOOSTER SERVICE -> DESCRIPTION -> Disassemble
Vehicle: 1990 GMC V1500 Suburban 6.2 V8 DIESEL
DESCRIPTION
These units, Figs. and , have a vacuum power chamber that consists of a front and rear shell, a housing divider, front and rear diaphragm and plate assemblies, an hydraulic pushrod and a diaphragm return spring.
The unit operates in much the same manner as the Single Diaphragm unit described above. The diaphragm and plate assemblies use the pressure differential created by engine intake manifold vacuum and atmospheric pressure to assist the hydraulic pushrod.
BOOSTER SERVICE
Disassemble
- Remove boot, silencer, vacuum check valve, grommet and front housing seal Fig. ...
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