1994 GMC G25/G2500 VAN Brake Service (ONLINE REPAIR MANUALS)

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We have info for following modifications of 1994 GMC G25/G2500 VAN

  • 1994 GMC G25/G2500 VAN Rally 4.3 V6 GAS, CID:262, Fuel Injection, Aspiration:262, Engine VIN:, Desg:Z
  • 1994 GMC G25/G2500 VAN Rally 5.0 V8 GAS, CID:305, Fuel Injection, Aspiration:305, Engine VIN:, Desg:H
  • 1994 GMC G25/G2500 VAN Rally 5.7 V8 GAS, CID:350, Fuel Injection, Aspiration:350, Engine VIN:, Desg:K
  • 1994 GMC G25/G2500 VAN Rally 6.5 V8 DIESEL, CID:395, Fuel Injection, Aspiration:395, Engine VIN:, Desg:P
  • 1994 GMC G25/G2500 VAN Vandura 4.3 V6 GAS, CID:262, Fuel Injection, Aspiration:262, Engine VIN:, Desg:Z
  • 1994 GMC G25/G2500 VAN Vandura 5.0 V8 GAS, CID:305, Fuel Injection, Aspiration:305, Engine VIN:, Desg:H
  • 1994 GMC G25/G2500 VAN Vandura 5.7 V8 GAS, CID:350, Fuel Injection, Aspiration:350, Engine VIN:, Desg:K
  • 1994 GMC G25/G2500 VAN Vandura 6.5 V8 DIESEL, CID:395, Fuel Injection, Aspiration:395, Engine VIN:, Desg:P

BRAKE SERVICE PROCEDURES FOR 1994 GMC G25/G2500 VAN AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1994 GMC G25/G2500 VAN cars and light trucks from 1990+.

Disc Brakes -> Delco-Moraine Single Piston Caliper -> Caliper Service -> Assemble -> Disassemble -> Inspection -> Installation -> Removal
Vehicle: 1994 GMC G25/G2500 VAN Rally 5.0 V8 GAS

Removal

  • Siphon enough brake fluid out of the master cylinder to bring fluid level to 1/3 full to avoid fluid overflow when the caliper piston is pushed back into its bore.
  • Raise and support vehicle, remove front wheels.
  • Using a C-clamp, Fig. , push piston back into its bore.
  • Remove two mounting bolts and lift caliper away from disc.

Inspection

Should it become necessary to remove the caliper for installation of new parts, clean all parts in denatured alcohol, wipe dry using lint-free cloths. Using compressed air, blow out drilled passages and holes. Check dust boots for punctures or t...

CLICK HERE TO GET FULL ACCESS TO 1994 GMC G25/G2500 VAN BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1994 GMC G25/G2500 VAN AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1994 GMC G25/G2500 VAN cars and light trucks from 1990+.

Anti-lock Brakes -> Rear Wheel Anti-Lock Brake System -> Precautions -> General Service Precautions
Vehicle: 1994 GMC G25/G2500 VAN Rally 5.7 V8 GAS

General Service Precautions

Avoid contact with brake fluid when servicing the anti-lock brake syste...

CLICK HERE TO GET FULL ACCESS TO 1994 GMC G25/G2500 VAN BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1994 GMC G25/G2500 VAN AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1994 GMC G25/G2500 VAN cars and light trucks from 1990+.

Power Brake Units -> Bendix Brake Boosters -> Description
Vehicle: 1994 GMC G25/G2500 VAN Rally 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...

CLICK HERE TO GET FULL ACCESS TO 1994 GMC G25/G2500 VAN BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1994 GMC G25/G2500 VAN AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1994 GMC G25/G2500 VAN cars and light trucks from 1990+.

Anti-lock Brakes -> Four Wheel Anti-Lock Brake System -> Diagnosis & Testing -> 1992-95 -> 1992-95 Except S & T Series w/VCM & VCM-A -> 1992-95 Models & 1996 S & T Series w/VCM -> 1995 S & T Series w/VCM & VCM-A & 1996 -> 1996 -> 1996 Except S & T Series w/VCM -> Accessing Diagnostic Trouble Codes -> Clearing Diagnostic Trouble Codes -> Diagnostic Trouble Code Interpretation -> Except S & T Series w/VCM & VCM-A -> S & T Series w/VCM & VCM-A
Vehicle: 1994 GMC G25/G2500 VAN Vandura 6.5 V8 DIESEL

Accessing Diagnostic Trouble Codes

Except S & T Series w/VCM & VCM-A
1992-95

Diagnostic trouble codes can be read using a TECH 1 scan tool or by jumping terminal "H" to terminal "A" of the Assembly Line Diagnostic Link (ALDL) connector, Fig. , and counting the Anti-Lock lamp flashes. The terminals must be jumped for a few seconds before the diagnostic trouble codes will begin to flash.

1996

Diagnostic trouble codes can only be read by connecting a suitable scan tool to the Data Link Connector (DLC), Fig. . Follow the instructions provided by the scan tool manufacturer.

S & T Seri...

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CLICK HERE TO GET FULL ACCESS TO 1994 GMC G25/G2500 VAN BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1994 GMC G25/G2500 VAN AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1994 GMC G25/G2500 VAN cars and light trucks from 1990+.

Disc Brakes -> Delco-Moraine Single Piston Caliper -> Brake Pad Service -> Installation -> Removal
Vehicle: 1994 GMC G25/G2500 VAN Rally 5.0 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 1994 GMC G25/G2500 VAN BRAKE SERVICE PROCEDURES

BRAKE SERVICE PROCEDURES FOR 1994 GMC G25/G2500 VAN AUTOMOBILES

Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1994 GMC G25/G2500 VAN cars and light trucks from 1990+.

Drum Brakes -> Brake Service -> C & K Series w/Non-Servo Brakes -> Duo-Servo Brakes -> Installation -> Lumina APV, Silhouette & Trans Sport -> Removal -> Tracker
Vehicle: 1994 GMC G25/G2500 VAN Rally 5.0 V8 GAS

Duo-Servo Brakes

Removal
  • 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, Fig. . Observe location of brake parts being removed to aid during installation.
  • Remove brake hold-down spri...

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